2. Atoms & Elements

Which of the following is the molar mass of gold (Au)?

What mass of KBr is present in 75.0 mL of a 0.250 M KBr solution?

You need 2.5 mol of iron (Fe) for an experiment. How many grams of iron must you measure out?

What is the molar mass of nitric oxide (NO)?

What is the molar mass of sucrose (C_{12}H_{22}O_{11})?

Where can you find the molar mass of an element when performing calculations in general chemistry?

What mass of NaOH is present in 50.0 mL of a 0.100 M NaOH solution?

Given that the atomic mass of sulfur (S) is approximately 32.07 g/mol, what is the mass of exactly 500 sulfur atoms?

What is the molar mass of formic acid (HCOOH)?

Given that the molar mass of NH_3 is 17.03 g/mol, how many moles of NH_3 are present in a 107.1 g sample?

What is the molar mass of KBr?

If 71.89 g of CO_2 is decomposed, what mass of oxygen (O_2) is produced? (Use the periodic table to find molar masses.)

How many total atoms of hydrogen are present in one formula unit of the compound 2H2O2?

Given that 5.38 × 10^{16} molecules of 1-butene have a mass of 5.00 μg, what is the molar mass of 1-butene?

What is the molar mass of butane, C_4H_{10}?