2. Atoms & Elements

How many atoms of nitrogen are present in 218 g of dinitrogen pentoxide (N2O5)?

What is the mass of 3.50 mol of Zn atoms?

What is the molar mass of iron(III) chloride, FeCl_3?

What is the molar mass of copper (Cu) in grams per mole?

What is the molar mass of potassium nitrate (KNO_3)?

What is the molar mass of CO_2?

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)?