Which of the following conversion factors would be used to calculate the number of moles of Cl2 produced if 11 moles of HCl were present in the following reaction:
4HCl + O2 --> 2Cl2 + 2H2O
Group of answer choices
4 mol HCl
2 mol Cl2
1 mol HCl
4 mol Cl2
2 mol H2O
2 mol Cl2
1 mol O2
2 mol H2O
Answers
The conversion factor that would be used to calculate the number of moles of Cl2 produced if 11 moles of HCl were present in the reaction is as follows:
4 mol HCl; 2 mol Cl2
How to calculate number of moles stoichiometrically?The number of moles of a reactant or product of a reaction can be calculated using stoichiometry.
According to this question, the following balanced chemical reaction was given:
4HCl + O2 --> 2Cl2 + 2H2O
This reaction shows that 4 moles of HCl is required to produce 2 moles of Cl2, therefore, this is the conversion factor that would be used to calculate the number of moles of Cl2 if 11 moles of HCl was present.
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Related Questions
1N2 + 2O2 → 1N2O4
If 55.52 grams of N2O4 was produced, how many moles of O2 were required?
Answers
Answer:
\(n_{O_2} =1.207molO_2\)
Explanation:
Hello there!
In this case, according to the given chemical reaction, it possible to calculate the required moles of oxygen by firstly knowing that the molar mass of N2O4 which is 92.011 g/mol and the mole ratio of that product to oxygen is 1:2; in such a way, we proceed as follows:
\(n_{O_2}=55.52gN_2O_4*\frac{1molN_2O_4}{92.011gN_2O_4}*\frac{2molO_2}{1molN_2O_4}\\\\n_{O_2} =1.207molO_2\)
Regards!
Atomic mass minus atomic number =
atomic mass
number of electrons
number of neutrons
number of protons
Answers
Answer:
atomic mass minus atomic number gives neutron
Explanation:
the answer is self explanatory
When a metal is put into an acidic solution, what happens
Answers
Answer:
The acid will react with the metal, causing hydrogen gas and salt to form from it.
Which of Earth’s spheres do humans impact and how?
You will get a free foot if you answer this
Answers
Answer:
humans have a huge impact on all spheres. if you negatively impact the spheres, such as burning fossil fuels, it'll pollute the atmosphere.
Explanation:
All four spheres of Earth are susceptible to human influence. Burning fossil fuels can cause pollution to be released into the atmosphere. Garbage accumulated by humans in landfills has an impact on the geosphere. Human waste enters waterways and has an effect on the hydrosphere.
What is geosphere ?Different definitions of the geosphere have conflicting uses. It can be used to refer to the atmosphere, lithosphere, hydrosphere, and cryosphere as a whole. Different mass and/or energy flows can be exchanged between the various geosphere collectives.
Land erosion and soil movement currently result from human activity more frequently than from any natural mechanism. Human-caused air and water pollution has a negative impact on the environment, rivers, and lakes, harming both other animals and people's health.
According to some scientists, humans have their own sphere, the "anthrosphere." But for the purposes of this module, people will also be considered a component of the biosphere.
Thus, Garbage accumulated by humans in landfills has an impact on the geosphere.
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What is the best way to measure the pH of a natural solution while out in a forest?
Answers
The best way to measure the pH of a natural solution while out in a forest is to use a portable pH meter or pH test strips specifically designed for field use. These instruments provide accurate and reliable pH measurements and are convenient for outdoor applications.
1. Prepare the necessary equipment: Before heading out to the forest, gather the required tools. You will need a portable pH meter or pH test strips, as well as the necessary reagents or calibration solutions if using a pH meter.
2. Collect the sample: Locate the natural solution you want to measure the pH of, such as a stream, pond, or soil. Use a clean container to collect a representative sample of the solution.
3. Calibrate the pH meter (if applicable): If you are using a portable pH meter, it is essential to calibrate it before taking measurements. Follow the manufacturer's instructions to calibrate the meter using the provided calibration solutions.
4. Conduct the measurement: For pH meters, immerse the electrode into the collected sample. Allow some time for the reading to stabilize, and then record the pH value indicated on the meter's display.
5. Using pH test strips: If you are using pH test strips, dip the strip into the collected sample for the recommended amount of time. Remove the strip and compare the color change with the provided color chart. Determine the corresponding pH value from the chart.
6. Repeat for accuracy: To ensure reliability, repeat the measurement process at least once and compare the results. This step helps confirm the accuracy of your measurements.
7. Record and analyze the data: Note down the pH values obtained and any relevant observations. Analyze the data as needed for your research or monitoring purposes.
By following these steps and using the appropriate equipment, you can effectively measure the pH of a natural solution while in a forest setting.
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How many grams are there in 1.18 x 1024 molecules of boron trihydride, BH3?
Answers
1 molecules = 117.17/ 6.022×10^23
So, 1×10^24 molecules = (117.17×1×10^24)/(6.022×10^23)= 194.569 g
When two substances with the same mass are heated by the same amount, which pair would heat up at about the same rate? Use the table to identify the substances.
A. aluminum and gold
B. copper and iron
C. iron and aluminum
D. gold and copper
Answers
Answer:
D. Gold and copper
From the table, the two metals which heat up about the same rate are iron and copper. These two metals have about close specific heat of capacities. Thus, they will cool or heat up in closer rates.
What is specific heat capacity ?Specific heat of capacity of a substance is the heat energy required to raise the temperature by one degree Celsius per one gram. It is an intensive quantity and does not depends on the amount of the substance.
The specific heat of the substance indicates the rate at which the substance cools down or heats up. It depends on the nature of the substance and its bond type.
Here, the two metals having closer specific heat capacities are iron and copper. Copper has specific heat of 0.39 and iron has 0.46 J/g° C. Hence, they will heats up in about same rates. Therefore, option C is correct.
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What's similar about the valence electrons of Carbon and Silicon?
Answers
Answer:
Explanation: Carbon and silicon BOTH come from Group 14 of the Periodic Table , i.e. both formally have the same number of valence electrons, 4 such electrons.........
analyze why is the result of the stage of meiosis shown below an advantage for organisms that reproduce sexually.
Answers
Answer:
Meiosis produces haploid cells (gametes), which contain single chromosomes, or on-half the number of chromosomes in diploid cells. When a sperm and an egg join, the single chromosomes pair up, which results in genetic diversity in the offspring
how many moles are in 1.505x10^24 molecules of surcrose
Answers
Answer:
2.499 moles of sucrose
Explanation:
Divide by Avogadro's number
Find the SDS for regular bleach
Answers
The Safety Data Sheet (SDS) for regular bleach can be obtained from the manufacturer or supplier of the specific brand or product. It contains important information regarding the hazardous properties, handling, storage, and emergency procedures related to the bleach.
An SDS typically includes details such as the product's chemical composition, physical and chemical properties, potential hazards to health and the environment, precautionary measures for safe handling and storage, first-aid procedures, and information about proper disposal. It also provides guidance on personal protective equipment (PPE) to be used when handling the product and steps to take in case of accidental release or exposure.
The SDS serves as a crucial resource for understanding the potential risks associated with the use of regular bleach and helps ensure that appropriate safety measures are implemented. It is important to review and follow the information provided in the SDS to minimize the risk of accidents, injuries, or adverse health effects associated with the use of the product.
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Which properties do not change the composition of a substance?
neither chemical nor physical properties
physical properties
chemical properties
chemical and physical properties
Answers
Answer:
Physical Properties
Explanation:
PHYSICAL PROPERTY
Answer:
phycical propertys
Explanation:
jut took the test got it right
3. A Wilkinson’s catalyst is widely used in the hydrogenation of alkenes. Show a catalytic cycle, including: i. chemical structure of the catalyst, with complete stereochemistry ii. molecular geometry of catalyst iii. type of reactions involved iv. the appropriate starting material, reagent and solvent v. major and minor end-products vi. all intermediates, for each reaction stated in (iii)
Answers
We can see here that the catalytic cycle for the hydrogenation of alkenes using Wilkinson's catalyst involves several steps.
What are the steps involved?Here's an overview of the catalytic cycle, including the necessary details:
i. Chemical structure of the catalyst:
Wilkinson's catalyst, also known as chloridotris(triphenylphosphine)rhodium(I), has the following chemical structure: [RhCl(PPh3)3]
ii. Molecular geometry of the catalyst:
The Wilkinson's catalyst has a trigonal bipyramidal geometry around the rhodium center. The three triphenylphosphine (PPh3) ligands occupy equatorial positions, while the chloride (Cl) ligand occupies an axial position.
iii. Type of reactions involved:
The catalytic cycle involves several reactions, including:
Oxidative addition: The rhodium center undergoes oxidative addition, reacting with molecular hydrogen (H2) to form a dihydride intermediate.Alkene coordination: The alkene substrate coordinates to the rhodium center, forming a π-complex.Hydrogenation: The coordinated alkene undergoes hydrogenation, resulting in the addition of hydrogen atoms to the double bond and formation of a metal-alkyl intermediate.Reoxidation: The metal-alkyl intermediate reacts with a hydrogen molecule to regenerate the rhodium dihydride species.iv. Starting material, reagent, and solvent:
The starting material is an alkene, and the reagent is Wilkinson's catalyst ([RhCl(PPh3)3]). The reaction is typically carried out in a suitable solvent, such as dichloromethane (CH2Cl2) or tetrahydrofuran (THF).
v. Major and minor end-products:
The major end-product of the hydrogenation reaction is the fully saturated alkane, resulting from the addition of hydrogen across the double bond. The minor end-product may include cis- or trans-configured alkanes if the original alkene substrate possesses geometric isomers.
vi. Intermediates:
The intermediates in the catalytic cycle include:
Rhodium dihydride complex: [RhH2(PPh3)3]Alkene-Rhodium π-complex: [Rh(η2-alkene)(PPh3)3]Metal-alkyl intermediate: [Rh(alkyl)(PPh3)3]These intermediates play a crucial role in facilitating the hydrogenation reaction and enabling the catalytic cycle to proceed.
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The decisions people (society) make to reduce their consumption of resources will most likely have a positive impact on the environment.
Question 30 options:
True
False
Answers
Answer:
True
Explanation:
I think it is common sense to assume that if we all came together to reduce our consumption then less resources would be harvested from envrionment and thus we would have positive impact on environment.
A solution is prepared by adding 16. g of CH 3 OH(mo mass 32 g) to 90. g of H 2 O(molar mass 18 g. The mole fraction of C*H_{3} * O * H in this solution is closest to which of the following ?
Answers
A solution is prepared by adding 16. g of CH₃OH (molar mass 32 g/mol) to 90. g of H₂O (molar mass 18 g/mol). The mole fraction of CH₃OH in this solution is closest to which of the following ?
The mole fraction of methanol in a mixture of 16. g of methanol and 90. g of water is 0.091.
Given the mass (m) of a compound and its molar mass (M), we can calculate the number of moles (n) using the following expression.
\(n = \frac{m}{M}\)
We will use this expression to calculate the moles of methanol and water.
\(nCH_3OH = \frac{16. g}{32 g/mol} = 0.50 mol\\nH_2O = \frac{90. g}{18 g/mol} = 5.0 mol\)
The total number of moles is:
\(n = 0.50 mol + 5.0 mol = 5.5 mol\)
The mole fraction of methanol is the ratio of the moles of methanol and the total number of moles.
\(\chi CH_3OH = \frac{0.50 mol}{5.5 mol} = 0.091\)
The mole fraction of methanol in a mixture of 16. g of methanol and 90. g of water is 0.091.
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How could the age be interpreted in a rock in which the blocking temperature has been reached?
Answers
Which equation shows an increase in entropy?
Hint: Look at the states of matter, g s l, of the chemicals in each equation. A C2H4(g) + H2(g) + C2H6(g) в Caco3(9) + Cao(s) - CO2(g) c Fe(s) + S (s) -+ FeS (s)
Answers
The equation C2H4(g) + H2(g) + C2H6(g) → Caco3(s) + Cao(s) + CO2(g) shows an increase in entropy due to the formation of a gas as a product. Option A
In this equation, the reactants on the left-hand side consist of gases (C2H4 and H2), while the products on the right-hand side include a solid (Caco3) and a gas (CO2).
When a reaction involves a change from gaseous to solid or liquid states, there is typically a decrease in entropy because the particles become more ordered and constrained in the solid or liquid phase.
Conversely, when a reaction involves the formation of gases, there is generally an increase in entropy because gases have higher degrees of molecular motion and greater freedom of movement compared to solids or liquids.
In the given equation, the reactants include three gaseous compounds (C2H4, H2, and C2H6), and one of the products is a gas (CO2). Therefore, the overall entropy of the system increases during this reaction.
The equation Fe(s) + S(s) → FeS(s) does not show an increase in entropy. Both the reactants (Fe and S) and the product (FeS) are solids. Since solids have lower entropy compared to gases or liquids, the entropy of the system does not increase in this reaction. Option A
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which compound has covalent bonds
Answers
H2O will form a covalent compound. Usually covalent bonds are formed between two or more nonmetals.
The Water molecules interact dynamically. Each H₂O molecule is a V-shaped and is made up of one oxygen atom and two hydrogen atoms, which are shown in white (depicted in red). Hydrogen bonds are allow adjacent H₂O molecules to temporarily connect with one another (depicted as blue and white ovals). The Individual H₂O molecules are held together by powerful bonds between the hydrogen (white) and oxygen (red) atoms. When two atoms as in this case, oxygen and hydrogen share the electrons, a covalent link is created. Each end of V-shaped H₂O molecule adopts a slightly different charge because oxygen and thehydrogen draw the shared electrons from each other in different ways.
In contrast to the opposite, hydrogen-containing end of the molecule, which is somewhat positive, the region around the oxygen is relatively negative.
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Your question is incomplete, for the full question refer:
Which compound among these has covalent bonds?
H2O, Li2O, Na2O, K2O
What information about elements can be collected from the periodic table?
Answers
Answer:
atomic number, atomic mass, electronegativity, electron configuration, and valence numbers can be found.
Explanation:
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Why do light-fur mice survive less often on dark rocks, compared to dark- figure mice?
Answers
Answer:
Light fur mice can be easily spotted by predators among the dark rocks
Light-fur mice survive less often on dark rocks, compared to dark- figure mice because light - mice are easily seen by predators, while dark - figure are not easily seen by predators.
What is predator ?Any species that preys on other animals and survives by killing and devouring them. Predators such as wolves and bears. Rabbit population is regulated by large carnivores.
Predators are living things that go for and kill prey. The term "prey" refers to the living things that predators eat. Both carnivores and omnivores may be predators. Predators including lions, tigers, sharks, and snakes.
Thus, Light-fur mice survive less often on dark rocks, compared to dark- figure mice because light - mice are easily seen by predators, while dark - figure are not easily seen by predators.
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what is the source of the force that moves the tectonic plates along this plate boundary
Answers
Answer:
Mantle convection
Explanation:
The source of the force that moves tectonic plates along plate boundaries is as a result of the mantle convection.
Heat energy produced in the mantle especially from radioactive decay is a very important source of internal heat that drives plate motion. Denser and cold materials close to the over-riding lithosphere above sinks deep into the mantle. Hotter and lighter materials rises to the surface. This sets up a convection cell by which the plates above are driven.We wish to determine how many moles of barium sulfate form when 50.0 mL of 0.250 M aluminum sulfate reacts with excess barium nitrate.
How many moles of Barium sulfate form during this reaction?
Answers
The number of moles of barium sulfate formed during this reaction is 0.038 moles.
How to calculate number of moles?The number of moles in a stoichiometric reaction can be calculated as follows:
According to this question, 1 mole of aluminium sulfate reacts to produce 3 moles of barium sulfate. However, 50.0 mL of 0.250 M aluminum sulfate reacts.
no of moles of aluminium sulfate = 0.250 × 0.05L = 0.013 moles.
If 0.013 moles of aluminium sulfate reacts, then 0.038 moles of barium sulfate will be produced.
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Which of the species below can form a hydrogen bond?
Answers
where??? coz there is nothing below
What quantity of heat (in kJ) would be required to convert 15.1 g of ice to water at 0.00°C? (∆Hfus = 6.01 kJ/mol for water)
for the answer I got 5.04, I don't know if it is correct
if it's correct, how would the process change if celsius was not zero, or does nothing change.
Answers
The quantity of heat required to convert the ice to water is 5048.4 J.
Quantity of heat requiredThe quantity of heat required to convert the ice to water is calculated as follows;
Q = n∆Hfus
where;
n is the number of moles of the ice∆Hfus is heat of fusion = 6.01 kJ/molNumber of moles of the iceThe number of moles of the ice is calculated as follows;
n = m/M
where;
M is molar mass of water (H2O) = 18 g/mol
n = 15.1/18
n = 0.84 mole
Q = 0.84 x 6.01 x 10³
Q = 5048.4 J
Thus, the quantity of heat required to convert the ice to water is 5048.4 J.
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please answer holy its been an hour
Answers
Reverse the sign of the second equation, change the sign of the enthalpy and add. Option B
What is the enthalpy?The enthalpy could be obtained by the use of the Hess law of constant heat summation. As such, we have a number steps and it is possible for use to obtain the enthalpy of the final reaction as shown by a series of manipulations.
By inspection, we can see that, if we desire to obtain the enthalpy of the final reaction as shown, then we have to reverse the sign of the second equation, change the sign of the enthalpy and add. Option B
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Two scientists were comparing the boiling points of two different substances. They each measured the boiling point of one substance. When they compared data, they found that they had used different temperature scales. The first scientist reported that Substance A boiled at 245 K. The second scientist reported that Substance B boiled at -92°C. Change the measurements to a single temperature scale. Which substance boils at a higher temperature?
Answers
Substance A has a higher boiling point compared to Substance B when measured on the same temperature scale.
To compare the boiling points of Substance A and Substance B, which were measured using different temperature scales, we need to convert the temperatures to a single scale for accurate comparison. The boiling point of Substance A was reported as 245 K, and the boiling point of Substance B was reported as -92°C. To convert Substance B's temperature from Celsius to Kelvin, we need to add 273.15 to the Celsius value. Thus, -92°C + 273.15 = 181.15 K. Now, both temperatures are in Kelvin: Substance A boils at 245 K, and Substance B boils at 181.15 K. Comparing the temperatures, we find that Substance A boils at a higher temperature (245 K) than Substance B (181.15 K). Therefore, Substance A has a higher boiling point compared to Substance B when measured on the same temperature scale.
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Jenny has a gold bar in a piece of gold foil both objects are made of 100% pure gold watch and closing can guinea make about the two objects
Answers
Answer:
What is the question your asking?
Explanation:
All atoms of the same element have the same properties.
Calculate the freezing point of a solution that contains 8.0 g of sucrose (C12H22O11) in 100 g of H2O. Kf for H2O = 1.86C/m
Group of answer choices
A. 0.44 degrees Celsius
B. 0.044 degrees Celsius
C. 0.39 degress Celsius
D. 0.22 degress Celsius
Answers
The freezing point of the sucrose solution is -0.435°C.
What is the freezing point of the solution?The freezing point of the solution is determined from the freezing point depression formula below:
ΔT = mKf(H₂O)Kf(H₂O) = 1.86 Cm
m is molality of solution = moles of solute/mass of solvent
moles of sucrose = 8.0/342.3 = 0.0233 moles
m = 0.0233/0.1 = 0.233 molal
ΔT = 0.233 m * 1.86°C/m.
ΔT = 0.435 °C.
Freezing point of sucrose solution = 0°C - 0.435°C
Freezing point of sucrose solution = -0.435°C.
In conclusion, the freezing point of sucrose solution is determined from the freezing point depression.
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please help!!
29.4 mL of an CH3COOH solution
were titrated with 18.5 mL of a
0.175 M LIOH solution to reach the
equivalence point. What is the
molarity of the CH3COOH solution?
CH3COOH + LiOH → CH3COOLI + H₂O
[?]M
Molarity (mol/L)
Enter
Answers
The molarity of the CH₃COOH solution is 0.1102 M.
A molarity is defined as what?The amount of solution a substance is present in determines its molarity (M). Molarity is the measure of a solute's concentration in a solution expressed in moles per liter. Molarity is another term for a solution's molar concentration.
C₁V₁ = C₂V ₂ or M₁V₁ = M₂V₂
where
M₁ = Molarity of LiOH = 0.175m
V₁ = Volume of 16LiOH = 18.5 mL
m₂ = ?
V₂ = Volume of CH₃COOH = 29mL.
M₂ = M₁V₁/V₂
M₂ = 0.175 × 18.5/29.4
M₂ = 0.1102 M.
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For case 1, what happens when an electron jumps from energy level 1 to energy level 3 in an atom?
Answers
Answer:
Case 1 (energy level): In an atom, an electron jumps from energy level 1 to energy level 3. ... The energy will increase.
Explanation: