# (Solved) a) How many molecules are in a 2.00 g sample of hydrogen peroxide, H2O2? The molar mass of H is 1.01 g/mol, and the molar mass of O is 16.00 g/mol

a) How many molecules are in a 2.00 g sample of hydrogen peroxide, H_{2}O_{2}? The molar mass of H is 1.01 g/mol, and the molar mass of O is 16.00 g/mol.

b) If one aluminum atom has an average atomic mass of 26.98 u, what is the molar mass of aluminum?

c) What is the amount of pure substance in 10.7 g of aluminum? Assume the molar mass of aluminum is 26.98 g/mol.

d) The molar mass of sodium chloride, NaCl, is 58.44 g/mol. The molar mass of sodium, Na, is 22.99 g/mol. What is the molar mass of chlorine?

e) The molar mass of water is 18.01528 g/mol. How many hydrogen and oxygen atoms are present in 10.0 g of water, H_{2}O?

## Expert Answer

Answer to a) How many molecules are in a 2.00 g sample of hydrogen peroxide, H_{2}O_{2}? The molar mass of H is 1.01 g/mol, and the molar mass of O is 16.00 g/mol….

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