Which contains more molecules: 1.00 mol H2O2, 1.00 mol C2H6, or 1.00 mol CO?

Answers

Answer 1

Answer: I believe H2O2 has the most, because it also has the most atoms (34)
Hope that helps!!

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Which two formulas represent Arrhenius acids?(1) CH3COOH and CH3CH2OH
(2) HC2H3O2 and H3PO4
(3) KHCO3 and KHSO4
(4) NaSCN and Na2S2O3

Answers

Answer : The correct option is, (2) $HC_2H_3O_2\text{ and }H_3PO_4$

Explanation :

Arrhenius theory : It sates that an acid is a type of substance that ionizes in the water to give the hydronium ion or hydrogen ion $(H^+)$ and a bases is a type of substance that ionizes in the water to give hydroxide ion $(OH^-)$ .

Or we can say that,

Arrhenius acid are those which can easily gives the hydrogen ion in a solution and Arrhenius base are those which can easily gives the hydroxide ion in a solution.

In option 1, $CH_3COOH$ can easily gives the hydrogen ion but $CH_3CH_2OH$ can not gives the hydrogen ion due to stronger O-H bonding. So, these formulas does not represent Arrhenius acids.

In option 2, $CH_3COOH$ and $H_3PO_4$ can easily gives the hydrogen ion. So, these formulas represent Arrhenius acids.

In option 3, $KHCO_3$ and $KHSO_4$ can not gives the hydrogen ion because both are the salts. So, these formulas does not represent Arrhenius acids.

In option 4, $NaSCN$ and $Na_2S_2O_3$ can not gives the hydrogen ion because no hydrogen present in the compound. So, these formulas does not represent Arrhenius acids.

Hence, (2) $HC_2H_3O_2\text{ and }H_3PO_4$ represent Arrhenius acids.

The answer is (2) HC2H3O2 and H3PO4.

When lithium reacts with bromine to form the compound LiBr, each lithium atom ....

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Loses one electron and becomes a positively charged ion.

The supercontinent that existed about 200 million years ago was named

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This was Pangaea! (was named like this in 1912)

It started existing around 300 million years ago and started falling apart around 175 million years ago.

Answer:

Pangaea

Explanation:

What is the major difference between a solution and an ordinary mixture?

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An ordinary mixture can be separated without using chemicals, a solution cannot.

The major difference between a solution and an ordinary mixture is that solution is homogeneous and an ordinary mixture is heterogeneous.

At standard pressure when NaCl is added to water,the solution will have a

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Answer: lower freezing point and a higher boiling point than water

Explanation:

Addition of a non volatile solute leads to elevation in boiling point and depression in freezing point.

This increase in boiling point arises because particles of the non-volatile solute occupy the surface of solution due to which solvent particles can not escape out of the solution. Hence, high amount of heat is required for the solute particles to escape out of the solution. Therefore, an increase in boiling point will occur.

Also as vapor pressure of solution becomes less, the freezing point gets depressed as freezing point is the temperature at which vapor pressure of solid becomes equal to the vapor pressure of solution.

Thus at standard pressure when NaCl is added to water,the solution will have a lower freezing point and a higher boiling point than water

lower freezing point and a higher boiling point than water

How many molecules of H20 are in 2.0 moles

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Hi There! :)

How many molecules of H20 are in 2.0 moles

12.044*10^23 or 6.022⋅1023 atoms

Other Questions

Express the answer in scientific notation and with the correct number of significant figures: (6.32 x 10-4) ÷ 12.64

The physical properties of a solution are not affected by the concentration of the components. True False

Calculate the density of a sample of liquid with a volume of 130 ml and a mass of 585 g.

Which statements describe elements?- Elements can be separated using physical means.- Elements are made of atoms with the same atomic number.- Elements cannot be separated using ordinary chemical means.- Elements may be represented by chemical symbols.- Elements are made of two or more different types of atoms.