2. Atoms & Elements

How many atoms of iron (Fe) are present in a sample containing 7.38 mol Fe?

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

How many moles of nitrogen atoms (N) are present in 0.239 g of dinitrogen monoxide (N_2O)?

How many moles of hydrogen atoms are present in 120 g of C6H12O6?

Which statement best describes the relationship between a mole and Avogadro's number?

Which of the following samples contains the same number of atoms as 24 grams of carbon (C)?

How many moles of N_2O_4 are present in 76.3 g of N_2O_4, given that the molar mass of N_2O_4 is 92.02 g/mol?

How many particles are present in 2 moles of mercury (Hg)?

How many basketballs are present in 1 mole of basketballs?

Which of the following operations yields the number of moles of solute in a solution?

How many moles are present in 55 g of NaCl?

What is the significance of Avogadro's number? Avogadro's number is the number of -

How many moles of carbon atoms are present in 18 g of carbon (C)?

What is the quantity, in moles, of CH3OH present in 150.0 mL of a 0.210 M CH3OH solution?

One half of a mole of atoms would contain how many atoms?