The atomic mass of platinum rounded to the nearest whole number is 195.
The atomic mass of an element refers to the weighted average of the masses of all the isotopes of the element. The mass number is the sum of the number of protons and neutrons in the nucleus.
Looking at the question, it is clear that the atomic mass of platinum rounded to the nearest whole number is 195.
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can someone tell me what 2200 kg is
Answer:
4850.17
for an approximate result, multiply the mass value by 2.205
Explanation:
2200 Kg is an weight which is going to be 4850.17 pounds.
Kg is the unit and 2200 the amount of that unit. If your question wasn't that(looks like you might have missed something) then please put a comment so I can give you a better answer.
Determine the moles of aluminium ions in 1.25mol of AI203
2.5mol of aluminium ions are in 1.25mol of AI\(_2\)O\(_3\). There are precisely 6.022×10²³ elementary entities in a mole.
What is mole?The International System of Units uses the mole (symbol mol) as the unit of substance quantity (SI). How so many elementary units of a certain substance are present in an item or sample is determined by the quantity of that material.
There are precisely 6.022×10²³ elementary entities in a mole. An elementary thing may consist of an atom, an molecule, and ion, and ion pair, or maybe a subatomic particle like an electron dependent on what the material is. AI\(_2\)O\(_3\) contains 2 mole of aluminium ion
mole of AI\(_2\)O\(_3\) =1.25mol
mole of aluminium ion =2×1.25mol =2.5mol
Therefore, 2.5mol of aluminium ions are in 1.25mol of AI\(_2\)O\(_3\).
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How many moles of PCl5 can be produced from 28.0 g of P4 (and excess Cl2 )? Express your answer to three significant figures and include the appropriate units.
0.903 mol of PCl₅ can be produced from 28.0 g of P₄ (and excess Cl₂).
What is Stoichiometry ?Stoichiometry helps us to use the balanced chemical equation to measure the quantitative relationship and it is to calculate the amount of product and reactants that are given in a reaction.
What is Balanced Chemical Equation ?The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.
Now write the balanced chemical equation
P₄ + 10 Cl₂ → 4PCl₅
1 mole of P₄ react with 10 mole of Cl₂ produces 4 moles of PCl₅.
According to Stoichiometry
\(\frac{n_{P_4}}{1} = \frac{n_{PCl_5}}{4}\)
\(n_{P_4} = \frac{\text{Given Mass}}{\text{Molar mass}}\)
= \(\frac{28\ g}{124\ g/mol}\)
= 0.22580645161 mol
Now put the value in above equation
\(\frac{n_{P_4}}{1} = \frac{n_{PCl_5}}{4}\)
\(\frac{0.22580645161}{1} = \frac{n_{PCl_5}}{4}\)
\(n_{PCl_5} = 0.903\) mol
Thus from the above conclusion we can say that 0.903 mol of PCl₅ can be produced from 28.0 g of P₄ (and excess Cl₂).
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the number of permutations of n items, where p items are identical and q items are identical, is given by _______.
The number of permutations of n items, where p items are identical and q items are identical, is given by:
n! / (p! q!)
This formula is known as the formula for permutations with repeated items. It takes into account the fact that some items are identical and should not be counted multiple times in a permutation.
Here, n represents the total number of items, p represents the number of identical items of one type, and q represents the number of identical items of another type. The exclamation mark (!) denotes the factorial function, which means the product of all positive integers up to that number.
The numerator represents the total number of permutations of n items, and the denominator accounts for the fact that some items are identical and should be treated as such.
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Elemental silicon is oxidized by o2 to give a compound which dissolves in molten na2co3. when this solution is treated with aqueous hydrochloric acid, a precipitate forms. what is the precipitate
Elemental silicon is oxidized by O₂ to give a compound which dissolves in molten Na₂CO₃. when this solution is treated with aqueous hydrochloric acid, a precipitate forms. silica gel is the precipitate.
The compound formed by the oxidation of elemental silicon with O₂ is silicon dioxide (SiO₂), which can dissolve in molten Na₂CO₃ to form sodium silicate (Na₂SiO₃).
When this solution is treated with aqueous hydrochloric acid (HCl), the sodium silicate reacts with the HCl to form a precipitate of silica gel (SiO₂·nH₂O). This reaction is known as the gelatinization of sodium silicate. The sodium chloride (NaCl) formed by the reaction remains in solution.
The silica gel precipitate is often used as a desiccant or drying agent due to its high surface area and ability to adsorb water molecules.
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The symbol of Radon??
Answer:
it's rn and the atomic number is 86 if u needed that
Explanation:
:)
HCN (and H2) can be produced by reacting CH4 with N2 What is the balanced chemical equation for this reaction. O ( 2 CH4 + N2 + 2 HCN+ 3H2 O CHA + N + 2 HCN + H2 O CH4 + N2 HCN + H2
O 2 CH4 +N, > 2 HCN + 2 H2,
The balanced chemical equation for the reaction between CH4 and N2 to produce HCN and H2 is 2 CH4 + N2 → 2 HCN + 2 H2. This reaction involves the breaking of chemical bonds in CH4 and N2 and the formation of new bonds in HCN and H2.
The balanced equation shows that 2 molecules of CH4 react with 1 molecule of N2 to produce 2 molecules of HCN and 2 molecules of H2. It is important to note that balancing the chemical equation is necessary to ensure that the reactants and products are in the correct proportions. The balanced equation also helps in calculating the amount of reactants needed and products produced in the reaction. Overall, the reaction between CH4 and N2 to produce HCN and H2 is an example of a chemical reaction.
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Convert 11.75 millimeters to meters.
Answer: 0.01175
Explanation:
4. Give examples of organisms that can perform cellular respiration.
only eukaryotes can perform cellular respiration. More specifically, the two types of organisms that can do this are autotrophs and heterotrophs.
Examples of heterotrophs: animals, fungi, the majority of bacteria, ...
Examples of autotrophs: grass, algae, a few bacteria, ...
()3C− − on reaction with HI gives () − − as
the main products and not () − and −
3C⁻⁻ on reaction with HI gives I⁻⁻⁻ as the main products and not H⁻ and C₂H₅I.
When 3C⁻⁻ is reacted with HI, the reaction product obtained is I⁻⁻⁻ as the main product. The C₂H₅I and H⁻ are not produced in significant quantities and cannot be considered the main product.The 3C⁻⁻ compound reacts with HI in the presence of a solvent to produce hydrogen gas, H⁻, C₂H₅I, and I⁻⁻⁻. The primary product obtained is I⁻⁻⁻ because it is stable and has a higher energy than C₂H₅I and H⁻.However, the reaction can be controlled to obtain C₂H₅I and H⁻ as the primary products by changing the reaction conditions. The reaction must be carried out in anhydrous conditions and at a low temperature so that the reaction proceeds in the desired direction.
3C⁻⁻ on reaction with HI gives I⁻⁻⁻ as the main products and not H⁻ and C₂H₅I. However, the reaction can be controlled to obtain C₂H₅I and H⁻ as the primary products by changing the reaction conditions.
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A gas has a pressure of 7.01 atm at 227°C. What will its temperature be if the pressure is increased to 12.1 atm and volume is held constant?
Answer:
The temperature of the gas will be 590.05 C.
Explanation:
Gay-Lussac's law can be expressed mathematically as follows:
\(\frac{P}{T} =k\)
Where P= Pressure, T = temperature, K = Constant
This law indicates that the ratio between pressure and temperature is constant.
This law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of shocks against the walls increases, that is, the pressure increases. That is, the gas pressure is directly proportional to its temperature.
In short, when there is a constant volume, as the temperature increases, the gas pressure increases. And when the temperature decreases, gas pressure decreases.
It is desired to study two different states, an initial state and an final state. You have a gas that is at a pressure P1 and at a temperature T1 at the beginning of the experiment. When the temperature varies to a new T2 value, then the pressure will change to P2, and the following will be true:
\(\frac{P1}{T1} =\frac{P2}{T2}\)
In this case:
P1= 7.01 atmT1= 227 C= 500 K (being 0 C= 273 K)P2= 12.1 atmT2= ?Replacing:
\(\frac{7.01 atm}{500 K} =\frac{12.1 atm}{T2}\)
Solving:
\(T2=12.1 atm*\frac{500 K}{7.01 atm}\)
T2= 863.05 K= 590.05 C
The temperature of the gas will be 590.05 C.
Where is the current North magnetic Pole?
Answer:
The current location of the North Magnetic Pole is in the Arctic Ocean, near the coast of northern Canada, specifically in the region of northern Quebec and Ellesmere Island in the Canadian Arctic Archipelago.
Explanation:
However, it's important to note that the North Magnetic Pole is not a fixed point on the Earth's surface, but it is instead constantly moving. The North Magnetic Pole is moving away from Canada and towards Siberia at a rate of about 55 km (34 miles) per year. This movement is caused by changes in the Earth's magnetic field and is known as the "wandering" of the magnetic poles. The exact location of the North Magnetic Pole can be determined by regular measurements and it is used as a reference point for navigation.
I got told if i got a lighter lit it and put it on my self that i should eat a cookie an watch :D should i do it :3
If a bag of chips cost $4.50 and contains 6 servings, how much are you paying per serving?
Answer:
.75
Explanation:
Answer:
0.75 cents
Explanation:
chemical analysis of a sample of biogas from a digester gives the following results: co 2 : 44%; ch 4 : 56% (all percentages are by volume). what is the hhv of this particular sample of biogas? is this above or below average? it is later discovered that this analysis was in error and that the correct assay for this sample is co 2 : 44%; ch 4 : 51%; h 2 : 5%. what is the corrected hhv of the biogas? if the objective is to produce a gas with as much heating value per unit volume as possible, is hydrogen a good coproduct? assume the hhv of pure co 2 and pure ch 4 are 0 and 1,000 btu/scf, respectively.
The corrected HHV is 510 BTU/scf. Hydrogen has a high heating value per unit volume (about 300 BTU/scf), but in this case, it contributes only 5% to the total volume, which doesn't significantly affect the overall HHV of the biogas.
Therefore, hydrogen might not be the best coproduct if the objective is to maximize the heating value per unit volume. Increasing the percentage of \(CH_4\) or using other gases with higher heating values could be more effective.
To find the HHV (Higher Heating Value) of the biogas, we can use the given percentages and the HHV of each component. For the initial analysis:
1. \(CO_2\): 44% with an HHV of 0 BTU/scf
2. \(CH_4\): 56% with an HHV of 1,000 BTU/scf
Step 1: Calculate the weighted average of the HHV:
HHV = (% of \(CO_2\) × HHV of\(CO_2\)) + (% of \(CH_4\) × HHV of \(CH_4\))
HHV = (0.44 × 0) + (0.56 × 1000)
HHV = 0 + 560
HHV = 560 BTU/scf
This HHV is below the average HHV of biogas, which is typically around 600 BTU/scf.
For the corrected analysis:
1. \(CO_2\): 44% with an HHV of 0 BTU/scf
2. \(CH_4\): 51% with an HHV of 1,000 BTU/scf
3. \(H_2\): 5% (Assuming its HHV is negligible)
Step 1: Calculate the weighted average of the HHV:
HHV = (% of \(CO_2\) × HHV of \(CO_2\)) + (% of \(CH_4\) × HHV of \(CH_4\)) + (% of \(H_2\) × HHV of \(H_2\))
HHV = (0.44 × 0) + (0.51 × 1000) + (0.05 × 0)
HHV = 0 + 510 + 0
HHV = 510 BTU/scf
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The molar mass of ammonium acetate is 77.083 g/mol. A student uses 0.100 mol of ammonium acetate in a chemical reaction. The
student claims that the reaction uses (0.100 mol) (77.083 g/mol) = 7.71 g of ammonium acetate, which has
(7.71) (6.022 x 1023) = 4.64 x 1024 molecules.
In one to two sentences, explain the mistake that the student made and determine the correct number of molecules of ammonium
acetate used in the reaction.
The student's claim of 4.64 × 10^24 molecules is incorrect, and the correct number of molecules of ammonium acetate used in the reaction is 6.022 × 10^22 molecules.
The mistake the student made is assuming that the molar mass of ammonium acetate directly corresponds to the number of molecules. However, the molar mass of a substance represents the mass of one mole of that substance, not the number of molecules.
To determine the correct number of molecules of ammonium acetate used in the reaction, we need to use Avogadro's number, which relates the number of particles (atoms, molecules, etc.) in one mole of a substance.
Avogadro's number is approximately 6.022 × 10^23 particles/mol. Given that the student used 0.100 mol of ammonium acetate, we can calculate the correct number of molecules by multiplying the number of moles by Avogadro's number:
Number of molecules = (0.100 mol) × (6.022 × 10^23 molecules/mol)
Performing the calculation, we find that the correct number of molecules of ammonium acetate used in the reaction is 6.022 × 10^22 molecules.
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Which category of cytoskeletal element is a solid. thinner structure often organized into a branching network, and composed of actin subunits? intermediate flaments microtubules Indeterminate filaments microfilaments all of these are correct.
The correct category of the cytoskeletal element described is microfilaments.
Microfilaments, also known as actin filaments, are a category of cytoskeletal elements that are thin, solid structures composed of actin subunits. They form a branching network within the cell and play a crucial role in cell structure, cell movement, and cell division. Microfilaments are involved in processes such as cell shape maintenance, muscle contraction, and cell motility.
Microfilaments are composed of globular protein subunits called actin. Actin monomers polymerize to form long, flexible filaments. Each actin monomer has a binding site for ATP (adenosine triphosphate), which provides energy for the assembly and disassembly of the filaments.
Among the options provided, microfilaments best fit the description of solid, thinner structures organized into a branching network and composed of actin subunits.
Overall, microfilaments are essential for maintaining cell structure, facilitating cell movement, and participating in various cellular functions. They work in conjunction with other components of the cytoskeleton, such as microtubules and intermediate filaments, to ensure proper cell function and organization.
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Proteco Oils Pressed Purity are a range of cold pressed oils ideal for cooking. The high quality oils are extracted from nuts, fruit and seeds. They are flavoursome and are naturally chemical and preservative free. Pressed Purity are one of the few oils on mainstream supermarket shelves which is 100% Australian. They offer a wider range variants than any other oil manufacturer in Australia. Proteco Oils’ state of the art refinery in Kingaroy, South East Queensland is uniquely equipped. With highly specialized equipment for complete oil processing on a large scale. Now, exporting into China and throughout Asia Pacific, this family owned company has grown with the help of Evolve Brand Design
Market Mostly females, 25-60+ years, with a contemporary cooking attitude. These consumers are health conscious, seeking natural and chemical free options for themselves and their family. The secondary target audience are men and women of all ages. This group consider themselves to be gourmet home chefs and are open to new tastes. Communication of the product concept was critical with the initial brand name development. Evolve Brand Design presented a range of concepts and the brand name ‘Pressed Purity’ was chosen. This concept was the winner as it implied the chemical free processing of the raw crops into edible oils. Likewise, the design for the brand is an analogy for pressing the oil from the fruit, nut or seeds using a vice. The Pressed Purity distinctive edge is threefold. Chemical free, 100% natural ingredients and genuinely Australian. Export opportunities have risen due to the third, very important, unique selling point (USP). In addition, they have a wide range of flavours with applications tailored to a range of food preparation methods. From flavourful salad dressing oils to baking and high heat applications like stir-frying and barbeques, Pressed Purity has a solution
Q.2.1 With the use of examples applicable to the case study, explain human resource forecasting. (10)
Q.2.2 Explain the concept of product differentiation in the context of Pressed Purity. (5)
Q.2.3 Recommend a work-study method for Proteco Oil’s refinery. (10)
Q.2.4 Identify and explain the criteria Proteco Oil used for market segmentation. (10)
Q.2.5 Identify the operational process used by Proteco Oil. Justify your choice. (10)
Q.2.1 With the use of examples applicable to the case study, explain human resource forecasting. Human resource forecasting refers to the process of estimating and planning for the future staffing needs of an organization.
Q.2.3 One work-study method that could be recommended for Proteco Oil's refinery is the method of time and motion study.
Q.2.1 It involves analyzing the current workforce, identifying future workforce requirements, and developing strategies to meet those needs. In the case of Proteco Oil's Pressed Purity, human resource forecasting would involve predicting the number and types of employees needed to support the company's growth and expansion.
For example, as Pressed Purity expands its export operations into China and throughout the Asia Pacific region, they would need to forecast the additional human resources required to manage international logistics, distribution, and marketing. This may include hiring employees with expertise in international trade, language skills, and knowledge of the target markets. Human resource forecasting would also consider the need for additional staff at the state-of-the-art refinery in Kingaroy to handle increased production and quality control.
Q.2.2 Product differentiation refers to the process of distinguishing a product from its competitors by highlighting unique features, benefits, or characteristics. In the context of Pressed Purity, product differentiation is evident in several aspects of their offerings.
One example of product differentiation is their focus on being 100% Australian. This sets them apart from other oil manufacturers in Australia who may rely on imported ingredients. By promoting their Australian origin, Pressed Purity appeals to consumers who prioritize supporting local businesses and value the quality associated with Australian products.
Additionally, Pressed Purity emphasizes being chemical and preservative-free. This addresses the growing consumer demand for natural and healthier food options. By positioning their oils as naturally chemical-free, Pressed Purity differentiates themselves from competitors who may not have such a strong emphasis on natural and chemical-free products.
Q.2.3 One work-study method that could be recommended for Proteco Oil's refinery is the method of time and motion study. Time and motion study involves analyzing and improving work processes by observing and measuring the time required to complete specific tasks or activities.
In the context of the refinery, a time and motion study could be conducted to identify any inefficiencies or bottlenecks in the oil processing operations. This could involve observing workers as they perform tasks and measuring the time taken for each step of the process. By analyzing the data collected, the refinery management can identify areas where time can be saved, processes can be streamlined, and productivity can be improved.
For example, the time and motion study may reveal that certain equipment or machinery in the refinery is causing delays or requiring excessive manual labor. Based on these findings, the management can make informed decisions on investing in more efficient equipment or implementing process improvements to optimize productivity and reduce costs.
Q.2.4 Proteco Oil used the following criteria for market segmentation:
Demographic segmentation: The primary target audience for Pressed Purity is mostly females, aged 25-60+ years, with a contemporary cooking attitude. These consumers are health-conscious and seek natural and chemical-free options for themselves and their families. The secondary target audience includes men and women of all ages who consider themselves gourmet home chefs and are open to new tastes.
Psychographic segmentation: Pressed Purity targets consumers who prioritize natural and chemical-free products. By emphasizing the use of 100% natural ingredients and being genuinely Australian, Pressed Purity appeals to health-conscious consumers who value the quality and authenticity of the products they consume. They also cater to gourmet home chefs who are looking for unique and flavorful cooking options.
Geographic segmentation: Initially, Proteco Oil focused on the domestic market in Australia.
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ccording to the following reaction, which molecule is acting as an acid? H2O + H2SO4 → H3O+ + HSO4- a. H2SO4 b. H2O c. H3O+ HSO4- d. none of the above.
According to the reaction H₂O + H₂SO₄ → H₃O⁺ + HSO₄⁻, the molecule that is acting as an acid is H₂SO₄. Therefore, the correct answer is option A.
According to the Brønsted-Lowry theory, an acid is a substance that donates a proton (H⁺) to another substance in a chemical reaction, and a base is a substance that accepts a proton. his transfer of a proton from an acid to a base is what creates a new acid and base, forming what is called a conjugate acid-base pair. In H₂O + H₂SO₄ → H₃O⁺ + HSO₄⁻ reaction, H₂SO₄ is acting as an acid because an acid H₂SO₄ is donating a hydrogen ion to H2O, forming H3O+ and HSO4-.
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how do the values of z, n, and a compare for each pair of atoms?
The values of z , n ,a for a pair of atoms can often be compared as follows: Atomic mass, the principal quantum number (n), and the atomic number (z) (a).
The values of z, n, and a are crucial quantities that characterise an atom's characteristics. The number of protons in the nucleus, or the atomic number (z), specifies the element to which the atom belongs. The energy level and spatial distribution of electrons are determined by the principal quantum number (n), with larger values signifying greater distance from the nucleus and higher energy. The total number of protons and neutrons in the atom's nucleus, or atomic mass (a), defines the atom's overall mass. Comparing and contrasting various atoms, such as those that belong to various elements, isotopes, or ionisation states, is possible using the values of z, n, and a. They are essential to comprehending the atomic level structure and behaviour of matter.
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Sean is moving heavy furniture by sliding it
across the floor. He puts a blanket
underneath the furniture. Why did this help
him?
Answer:
the blanket let's him slide it across the floor because the has less friction with the floor than the furniture.
Answer:
Blanket underneath the furniture may reduce the kinetic friction
Explanation:
When sliding an object across a surface, the force of kinetic friction will oppose the movement of the object.
By placing a blanket between the object and the surface, the kinetic friction coefficient may be reduced.
Therefore, putting a blanket underneath the furniture may reduce the kinetic friction coefficient, then making it easier to slide the forniture.
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Glucose, C6H12O6,C6H12O6, is used as an energy source by the human body. The overall reaction in the body is described by the equation
C6H12O6(aq)+6O2(g)⟶6CO2(g)+6H2O(l)C6H12O6(aq)+6O2(g)⟶6CO2(g)+6H2O(l)
Calculate the number of grams of oxygen required to convert 53.0 g53.0 g of glucose to CO2CO2 and H2O, what is the mass of O2
Calculate the number of grams of CO2CO2 produced, what is the mass of Co2
The number of grams of oxygen required to convert 53.0 g of glucose to CO₂ and H₂O is 56.6 g.
The number of grams of CO₂ produced is 77.67 g.
The given balanced equation is:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
The molar mass of glucose, C₆H₁₂O₆ = (6 × 12.01) + (12 × 1.01) + (6 × 16.00) = 180.18 g/mol.
To convert 1 mol of glucose into CO₂ and H₂O, 6 mol of O₂ is required.
The number of moles of glucose present in 53.0 g of glucose is:
53.0 g × 1 mol/180.18 g = 0.294 mol.
The number of moles of O₂ required to convert 0.294 mol of glucose into CO₂ and H₂O is:
6 × 0.294 mol = 1.764 mol.
The molar mass of O₂ = 32.00 g/mol. Therefore, the mass of O₂ required = 1.764 mol × 32.00 g/mol = 56.6 g. Hence, the mass of oxygen required to convert 53.0 g of glucose to CO₂ and H₂O is 56.6 g.
Now, to calculate the mass of CO₂ produced, we need to determine the moles of CO₂ produced. From the balanced equation, the number of moles of CO₂ produced = 6 × the number of moles of glucose. Therefore, the number of moles of CO₂ produced = 6 × 0.294 mol.
The molar mass of CO₂ = 44.01 g/mol. Therefore, the mass of CO₂ produced = 6 × 0.294 mol × 44.01 g/mol = 77.67 g.
Hence, the mass of CO₂ produced is 77.67 g.
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What is the best definition of chemistry?
A. The study of mass, energy, and light
B. The study of life and energy
C. The study of experiments and theories
D. The study of matter, its properties, and its reactions
how many grams of k o h are needed to neutralize 12.6 ml of 0.14 m h c l in stomach acid?
0.0989 grams of KOH is needed to neutralize 12.6 mL of 0.14 M HCl in stomach acid.
Volume of HCl solution = 12.6 mL = 0.0126 L
The concentration of HCl solution = 0.14 M We have to find the amount of KOH required to neutralize the given volume and concentration of HCl.
In order to calculate the amount of KOH, we need to first calculate the number of moles of HCl using the formula of Molarity;
Molarity = (Number of moles of solute) / (Volume of solution in liters)0.14 M = n(HCl) / 0.0126L0.14 × 0.0126 = n(HCl)n(HCl) = 0.001764 moles of HCl
Now, the balanced chemical equation for the reaction of KOH with HCl is;KOH + HCl → KCl + H₂OOne mole of KOH reacts with one mole of HCl.
Therefore, the number of moles of KOH required to neutralize the given amount of HCl would be equal to 0.001764 moles. Now, let's calculate the amount of KOH in grams.
Molar mass of KOH = 39.1 + 16.00 + 1.008 = 56.108 g/mol0.001764 moles of KOH would weigh = 0.001764 × 56.108 = 0.0989
hence, the amount of KOH required to neutralize the given volume and concentration of HCl would be 0.0989 grams.
Thus, 0.0989 grams of KOH is needed to neutralize 12.6 mL of 0.14 M HCl in stomach acid.
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The concentration of which ion is increased when LIOH is dissolved in water
Answer:OH^- ion
Explanation: When LiOH added in water then LiOH dissociated in Li+ and OH- . Water is a composition of H+ and OH- ions hence concentration of OH- ions will be increased after adding LiOH.
If a net force of 4 N caused a football to accelerate 8 m/s2 across a football field, what was the mass of the football?
Answer:
Mass is .5kg
Explanation:
F=ma, plug in your numbers:
F=4N
A=8m/s^2
4=m8
m=4/8
what is the symbol for the element with an electron configuration of 1s^22s^22p^31s 2 2s 2 2p 3 1, s, squared, 2, s, squared, 2, p, cubed?
The correct answer is Nitrogen.
From the given question the electronic configuration of the element is given as:
1s²2s²2p³
hence, we know that the maximum no of electrons in the sub-shell
s= 2
p=6
while in this p has only 6 electrons.
Thus by counting the number of electrons in each sub-shell we can know the atomic number as several electrons in an atom is equal to the atomic number of the atom.
thus, the no of electrons present is- 2+2+3= 7
For, 7 electrons the element present will be nitrogen with atomic number 7.
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what is the correct amount of water to collect for total chlorine testing
To properly test for total chlorine in water, it is important to collect the correct amount of water. The recommended amount of water to collect for total chlorine testing is at least 100 mL.
This amount of water ensures that the test results are accurate and representative of the overall chlorine content in the water sample.
It is also important to ensure that the water sample is collected in a clean and sterile container to avoid any contamination that may affect the test results.
It is recommended to collect the water sample from the middle of the water source, and to avoid collecting water that may have been stagnant for an extended period of time.
Proper collection and testing of water for total chlorine is crucial in ensuring the safety and quality of drinking water.
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What role does density play in the movement of convection currents?
According to the research, the correct answer is that the role that density plays is that density differences propagate the movement of convection currents when they absorb heat in a portion.
What is density?It refers to the magnitude that reflects the link that exists between two magnitudes, the mass of a body and its volume.
In this sense, convection currents are generated by differences in density where, due to heating a material, it increases in volume and, therefore, its density decreases and ascends, displacing the fluid that is in the upper part.
Therefore, we can conclude that the movement of the convection currents is caused by differences in density due to differences in temperature.
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Part B Change the distance of the electron from the center position as it moves up and down. What relationship do you notice between the distance from the center position and the amplitude of the wave?
Answer:
The movement of the electron changes the amplitude of the wave. The farther the electron moves from the center position, the greater the amplitude.
Explanation:
Answer:
The movement of the electron changes the amplitude of the wave. The farther the electron moves from the center position, the greater the amplitude.
Explanation:
Edmentum Sample Answer.