2. Atoms & Elements

How many iodine atoms are present in 4 molecules of carbon tetraiodide (CI_4)?

Which of the following is the molar mass of hydrochloric acid (HCl)?

Given the chemical formula 6Al2O3, how many total atoms of aluminum and oxygen are present?

What is the mass, in grams, of 9.30 moles of SiH_4?

Where can you find the molar mass of aluminum for use in chemical calculations?

How many grams are present in 0.885 moles of manganese (Mn)? (Atomic mass of Mn = 54.94 g/mol)

What is the molar mass of fluorine (F) in grams per mole?

What is the mass, in grams, of 1.70 mol of carbon (atomic mass = 12.01 g/mol)?

What is the molar mass of Mg3(PO4)2?

Given that the molar mass of sulfuric acid (H_2SO_4) is 98 g/mol, what is the mass of oxygen present in 250 g of H_2SO_4?

How many grams are present in 238 moles of arsenic (As)? (Atomic mass of As = 74.92 g/mol)

How many atoms are present in one formula unit of magnesium hydroxide, Mg(OH)_2?

How many atoms of oxygen are present in 4875 milligrams of Ca3(PO4)2?

What is the mass of 1.20 × 10^{24} atoms of potassium (K)? (Atomic mass of K = 39.1 g/mol)

What is the mass in grams of 2.57 × 10^{23} molecules of I_2?