The molecular formula for a monosaccharide is _____ where _____. A) CnH2n+2On; n > 3. B) CnH2nOn; n >/= 3. C) CnH2nOn; n >/= 4. D) CnH2n+2On; n > 4
E) none of the above

Answer:

144 boxes, 72,000 washers

Explanation:

I'm not sure if this is right but convert the 18kg to g and then divide it by the grams. You get 144 and then multiply it by 500 for the total number of washers

Answer:

The warm air over the land will rise throughout the day, causing low pressure at the surface. Over the water, high surface pressure will form because of the colder air. ... The wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze.

Explanation:

The potential energy diagram for the reaction N02(0) -> JN2(9) + 02(9) should be a curve that descends from reactants to intermediates and then ascends to products, with a label indicating that ΔH = -33.1 kJ/mol.

A potential energy diagram of a reaction is a graph that demonstrates the progress of a reaction and the changes in potential energy that occur over time. The vertical axis of the diagram shows potential energy, and the horizontal axis shows reaction progress. Reactants are shown on the left, intermediates are shown in the middle, and products are shown on the right. The reaction pathway is depicted with a curve that descends from reactants to intermediates and then ascends to products. Labeling the enthalpy of a reaction involves identifying its enthalpy change. The enthalpy change (ΔH) of a reaction is the heat absorbed or given off by the system at a constant pressure. The reaction N02(0) -> JN2(9) + 02(9) has ΔH = -33.1 kJ/mol. The reaction is exothermic because the enthalpy change is negative.

The potential energy diagram for this reaction should be a curve that descends from reactants to intermediates and then ascends to products. The enthalpy change should be labelled in the diagram. If the enthalpy change is negative, then it should be labelled as a negative value. If the enthalpy change is positive, then it should be labelled as a positive value.

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The correct answer is option d. 0.1 M \(MgCl2\). The aqueous solution with the lowest vapor pressure would be the one with the highest concentration of solute particles.

According to Raoult's law, the vapor pressure of a solution decreases as the concentration of solute particles increases.

This is because \(MgCl2\) dissociates into three ions when it dissolves in water (\(Mg2+ and two Cl- ions\)), resulting in a higher concentration of solute particles compared to the other options.

The other solutions either contain fewer ions or a lower concentration of solute particles, resulting in relatively higher vapor pressures.

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Answer:

Thus, the element containing the greatest number of atoms is 12 g He. Thus, the correct option is (4) 12 g He. Note: The number of atoms of a compound is Avogadro's number for 1 mole of compound. The number 6.022×1023 is known as Avogadro's number.

Explanation:

(4)✔️ 12 g He

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Answer:

120gram I think so this is the answer if the answer is correct plz mark me as brainliest.

Answer:

NaOH

Explanation:

sodium hydroxide

Answer:

A = 2

B = 1

Explanation:

The atomic number of lithium is 3.

Its atomic mass is 7 amu.

It is present in group group 1.

It has one valance electron.

Lithium is alkali metal it form salts.

It is silvery soft metal. It has lowest density as compared to all other metals.

It react vigorously with water.

It is used in rechargeable batteries which are used in camera, mobile, laptops etc.

The electronic configuration of Li:

Li₃ = 1s² 2s¹

Thus,

A = 2

B = 1

After eating ten cookies, Sam refused to eat more cookies because he reached the satiation point, the point where the body signals to the brain that it has had enough food for that particular meal. This process helps regulate the amount of food we eat, preventing us from overeating, which can lead to health problems.

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The sample containing the least number of atoms is 1 mol of H2O.

In this sample, there are three atoms: two hydrogen atoms and one oxygen atom.

Atoms are the fundamental units that make up everything we see, feel, and experience around us.

Everything, including the air we breathe, the food we eat, and the clothes we wear, is made up of atoms.

They are so tiny that they cannot be seen even with the most powerful microscope.SampleA sample is a subset of a population that is chosen for investigation.

A sample is a representation of the whole population and is chosen to ensure that the results of the study can be generalized to the entire population.

The number of atoms in a sample varies depending on the substance.

The Avogadro's number of atoms is contained in 1 mole of any substance.

The mole is a unit of measurement used in chemistry to measure the quantity of a substance.

In conclusion, the sample containing the least number of atoms is 1 mol of H2O.

In this sample, there are three atoms: two hydrogen atoms and one oxygen atom.

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Answer:Atomic mass is the mass of an atom in atomic mass units (amu)

Atomic mass

• atomic mass (sometimes called atomic weight) is the mass of the atom in atomic mass units (amu). (from periodic table)

o One atomic mass unit is defined as a mass exactly equal to one-twelfth the mass of one carbon-12 atom. Carbon-12 is the carbon isotope that has six protons and six neutrons. Setting the atomic mass of carbon-12 at 12 amu provides the standard for measuring the atomic mass of the other elements.

o For example, experiments have shown that, on average, a hydrogen atom

Answer:

18.02 g/mol

Explanation:

Add the atomic mass of the parts of H2O

1.01 + 1.01 + 16 = 18.02

H H O

The volume of titrant required for the titration is 22.09 mL - 1.91 mL = 20.18 mL. The initial volume of titrant is the volume of titrant in the buret before the titration begins.

The final volume of titrant is the volume of titrant in the buret after the titration is complete. The difference between these two volumes is the volume of titrant that was used during the titration. In this case, the initial volume of titrant was 1.91 mL and the final volume of titrant was 22.09 mL. Therefore, the volume of titrant that was used during the titration was 22.09 mL - 1.91 mL = 20.18 mL. It is important to note that the volume of titrant required for a titration can vary depending on the concentration of the titrant, the concentration of the analyte, and the volume of the analyte.

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The ph of the basic solution will always be having the ph value above 7 in the ph scale.

what is the ph scale  ?

The pH scale is a numerical scale ranging from 0 to 14. It indicates whether an aqueous solution is acidic or alkaline. The pH scale is used to determine whether a solution is acidic, alkaline, or neutral.

Neutral solutions have a pH of 7.

The pH of acidic liquids is less than 7. The closer a solution is near pH 0, the more acidic it is.

The pH of alkaline solutions is greater than 7. The closer a solution is near pH 14, the more alkaline it is.

Acidic, alkaline, or neutral solutions are all possible. Pure water, for example, has a pH of 7 and is neutral. Because a solution of common salt (sodium chloride) is neutral, it has a pH of 7.

The word aqueous solution is frequently used in science. It is used to define a water-based solution. Only water-based solutions may be used to assess pH.

As a result, we may determine the pH of a solution whic is basic will be having the ph value above seven.

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Answer:

Salt

Explanation:

It is because it has a defined composition.

Answer:

Salt

Explanation:

Pure substances are those that contain atoms or molecules of the same type. For eg: elements are pure (gold, hydrogen etcl.) and compounds (such as water, sodium chloride, etc.), etc.

Rest of choice are impure because they contain a mixture of different things, like pie has eggs, or all sorts of other molecules, salt water has water and salt molecules, and iced tea has water and other molecules associated with tea.

Answer:

\(50ml=0,05l\\n_H_2SO_4=2.0,05=0,1mol\\mH_2SO_4=0,1.98=9,8g\)

Explanation:

The final concentrations of strontium ion, sodium ion, and fluoride ion (which has precipitated as strontium fluoride) are 1.087 M, 2.914 M, and 0 M, respectively.

The balanced chemical equation for the precipitation reaction is:

Sr(NO3)2 + 2 NaF → SrF2 + 2 NaNO3

moles of strontium nitrate = concentration x volume = 2.320 mol/L x 0.1850 L = 0.4292 mol

moles of sodium fluoride = concentration x volume = 2.742 mol/L x 0.2100 L = 0.5752 mol

moles of strontium fluoride = 0.4292 mol x (1 mol SrF2 / 1 mol Sr(NO3)2) = 0.4292 mol

mass of strontium fluoride = moles of strontium fluoride x molar mass = 0.4292 mol x 125.62 g/mol = 53.68 g

total volume = 185.0 mL + 210.0 mL = 395.0 mL = 0.3950 L

concentration of strontium ion = moles of strontium ion / total volume = 0.4292 mol / 0.3950 L = 1.087 M

Moles of sodium ion = 2 x moles of sodium fluoride = 2 x 0.5752 mol = 1.1504 mol

concentration of sodium ion = moles of sodium ion / total volume = 1.1504 mol / 0.3950 L = 2.914 M

Concentration refers to the amount of a solute dissolved in a given amount of solvent or solution. It is usually expressed in units of molarity (moles per liter) or weight per volume (grams per liter). There are various methods for measuring concentration, including titration, spectrophotometry, and gravimetry. These methods allow chemists to accurately determine the amount of solute in a solution and adjust the concentration as needed.

Concentration plays a crucial role in many chemical reactions and processes. It can affect the rate of a reaction, the yield of a product, and the properties of a solution. For example, a higher concentration of reactants can increase the rate of a reaction, while a higher concentration of a solute can increase the boiling or melting point of a solution.

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0.0019 moles of KMnO4 is used in the 19 mL solution with a concentration of 0.100 M.

To find the number of moles of KMnO4 used in a 19 mL solution with a concentration of 0.100 M, you can follow these steps:

1. Convert the volume of the solution to liters: 19 mL = 0.019 L
2. Use the formula: concentration or molarity = number of moles / volume of solution (in litres)

number of moles = concentration × volume
3. Plug in the values: number of moles = 0.100 M × 0.019 L

You have used 0.0019 moles of KMnO4 in the 19 mL solution with a concentration of 0.100 M.

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Answer:

Mount Everest is the highest point on Earth, and Death Valley is relatively flat.

Explanation:

Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. It is one of the hottest places on Earth, along with deserts in the Middle East and the Sahara, Mount Everest is Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border runs across its summit point.

Answer:

Last one

Explanation:

The equation that represents a single replacement reaction given the various options is 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) (option 2)

A single replacement reaction, also known as single displacement reaction is a reaction in which elements higher in the electro-chemical series displace or replace elements lower in the electro-chemical series displace from a solution.

The following example illustrates single replacement reaction:

A + BC -> AC + B

From the above reaction, we can see that A has replace/displace B to from AC.

With the above information, we can determine the equation that represents single replacement reaction. Details below:

Equation from the questions:

From the above, we can see that only 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) conform to single replacement reaction.

Thus, the correct answer to the question is: 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) (option 2)

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Lactose is a disaccharide carbohydrate molecule, composed of two monosaccharide units, glucose and galactose, linked by a β(1→4) glycosidic bond. It is commonly found in dairy products and serves as an energy source for organisms capable of digesting it. In order to be broken down and utilized, lactose must be hydrolyzed by the enzyme lactase into its individual monosaccharides. Lactose intolerance occurs when individuals lack sufficient lactase activity, leading to difficulty digesting lactose and subsequent gastrointestinal symptoms.

Lactose is complete molecule classified as a disaccharide, consisting of two simple sugar units, glucose and galactose, joined together by a beta-glycosidic bond. It is commonly found in milk and dairy products and is responsible for the sweet taste of milk. Lactose is an important source of energy and nutrition for infants and young animals. However, some people are unable to digest lactose due to a deficiency of the enzyme lactase, which breaks down lactose into its component sugars. This can lead to lactose intolerance, which can cause digestive symptoms such as bloating, gas, and diarrhea.

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Lithium alkali metals has the highest electronegativity. An atom's ability to attract the electrons of a bond grows with electronegativity, a feature of an atom.

The electrons in a covalent bond are shared evenly by two bound atoms if their electronegativity levels are the same. Typically, the more electronegative atom attracts the electrons in a chemical bond more so than the other one. Consequently, a polar covalent bond is created. The electrons aren't shared at all if the electronegativity values are significantly dissimilar. Ionic bonds are created when one atom essentially steals the other atom's bond electrons.

Over a period, electronegativity often increases as it moves from left to right. The noble gases frequently defy this rule.

Moving down on the periodic table often results in a decrease in electronegativity.

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False. When there are large numbers of people looking to save their money and there is little demand for loans, one would expect interest rates to be low.

This is because banks have excess funds to lend out, but there are few borrowers, so they need to lower interest rates to encourage more people to take out loans. At the same time, there is a high supply of savings, so banks may lower the interest rates they offer on savings accounts to discourage people from saving and instead encourage them to spend or invest.

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As carbon bonds with atoms of increasingly higher electronegativities, the polarity of the bond increases.

Electronegativity refers to the ability of an atom to attract electrons towards itself. When carbon bonds with atoms that have higher electronegativities than itself, such as oxygen or nitrogen, the electrons in the bond are more strongly attracted to the higher electronegative atom.

This results in an unequal sharing of electrons between the two atoms, creating a polar covalent bond where one atom has a slightly negative charge (the more electronegative atom) and the other has a slightly positive charge (the carbon atom). Therefore, as the electronegativity of the atom carbon is bonding with increases, the polarity of the bond also increases.

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Answer:

4 M

Explanation:

Molarity refers to the molar concentration of a substance (solution). It can be calculated by using the formula below:

Molarity (M) = number of moles (n) ÷ volume (V)

According to the information provided in this question;

V = 0.4 liter

n = 1.6 moles

Molarity = n/V

Molarity = 1.6/0.4

Molarity = 4 M

Answer: Im not sure but I think it is false.

Explanation:

The chemical in the catabolism of glucose that enters the mitochondria is pyruvat.

In the catabolism of glucose, the process begins with glycolysis, which takes place in the cytoplasm of the cell. During glycolysis, glucose is broken down into two molecules of pyruvate through a series of enzymatic reactions. Pyruvate is a three-carbon compound (C₃H₄O₃) and serves as an intermediate product in glucose metabolism.

After glycolysis, if oxygen is available, pyruvate enters the mitochondria, where further oxidation occurs through a process called aerobic respiration. In the mitochondria, pyruvate undergoes decarboxylation, producing acetyl CoA, which then enters the citric acid cycle (also known as the Krebs cycle). The citric acid cycle generates high-energy electrons, which are then used in the electron transport chain to produce ATP through oxidative phosphorylation.

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Answer:

82

Explanation:

i took the assingment

The answer is d) combination of all. Crystals can have different shapes and structures depending on the arrangement of atoms in the crystal lattice. Some crystals may have a cubic structure, while others may have a rhombus or octahedral structure. Therefore, "crystal of atom" can have a combination of all these structures.

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Answer:

The bowling ball is red, has stripes, and has 3 finger holes.

Answer:

The shape of the bowling ball is round. The color of the bowling ball is red. The bowling ball is hard. The bowling ball is smooth.

Explanation: Hope I helped