2. Atoms & Elements

We can be sure that a mole of table sugar (C12H22O11) and a mole of vitamin C (C6H8O6) are equal in their:

If we compare a mole of carbon atoms to a mole of oxygen atoms, which of the following statements is true?

Why do chemists use moles as a unit in chemical calculations?

If you have 1 mole of bicycles, and each bicycle has 2 tires, how many moles of tires do you have?

Why is the mole used as a unit to measure quantities such as atoms in chemistry?

The number of molecules of a chemical substance that is equal to its molecular weight in grams is called a(n):

Which contains more atoms: 1 mole of carbon or 1 mole of sulfur?

Which of the following statements best describes a mole in chemistry?

How many moles of He gas are present in 500 L at standard temperature and pressure (STP)?

What is the total number of moles of atoms present in 1 mole of NH_3?

An aluminum can has a mass of 15.8 grams. How many aluminum atoms are in this can? (Atomic mass of Al = 26.98 g/mol)

Which of the following solutions contains the greatest number of moles of H+(aq) ions?

How many atoms of gold (Au) are present in a 90.2-g sample? The molar mass of gold is 197.0 g/mol.

If you have 0.5 moles of NaCl, how many formula units of NaCl do you have?

What is the total number of atoms present in 1.0 mole of CO_2?