2. Atoms & Elements

How many moles of carbon dioxide are contained in 4.66 x 10^26 molecules?

How many moles of oxygen atoms are present in 25.45 g of CaCO₃?

How many moles of sodium carbonate (Na2CO3) contain 1.773 × 10^17 carbon atoms?

The fuel used in many disposable lighters is liquid butane, C4H10. How many carbon atoms are in 1.50 g of butane given that the molar mass of butane is 58.12 g/mol? Express your answer numerically in atoms.

What is the mass of one molecule of NH₃ in grams?

What is the total concentration of ions in a 0.0360 M solution of Na₂CO₃?

Which of the following has the smallest mass?

How many moles are equivalent to 3.01 x 10^23 atoms of carbon?

How do you calculate the moles of a gas in a solution when given its volume at standard temperature and pressure (STP)?

How many molecules are present in 4.61 moles of H2O?

Which formula is used to convert grams of a substance to moles?

How do you calculate the number of moles of a diprotic acid if you have 0.1236 grams of it dissolved in 40 mL of water, given its molar mass is 61.04 g/mol?

In a sample of sucrose (C12H22O11) containing 1.0 x 10^20 atoms of carbon, how many oxygen atoms are present?