2. Atoms & Elements

If you have a mole of carbon atoms, which of the following statements is correct?

How many atoms of zinc are present in 0.60 mol of zinc?

What is the mass of 9.00 × 10^{22} molecules of NH_3?

How many moles are present in 82.5 grams of iron (Fe)? (Molar mass of Fe = 55.85 g/mol)

How many moles of Cu(NO3)2 are present in 2.35 L of a 2.0 M solution?

How many carbon atoms are present in 1 mole of carbon?

Which of the following is the value of Avogadro's number?

How many atoms are present in a 591 g sample of gold (Au)? (Atomic mass of Au = 197 g/mol)

How many molecules of H_2O are present in 18.01 g (one mole) of water?

How many moles are present in 1 micromole?

How many atoms of hydrogen are present in 2.00 moles of methane (CH_4)?

How many molecules are present in one mole of a substance?

Given that the molar mass of LiF is 25.94 g/mol, how many moles of LiF are present in a 10.37 g sample?

How many atoms are present in 2.0 moles of carbon?

A sample contains 0.25 mol of NaCl. How many formula units of NaCl are present in the sample?