Molar Conversions Two Step

Which conversion factor would you use to calculate correctly the mass of 2 moles of the element titanium?

• 1 g Ti / 47.84 mol Ti
• 1 mol Ti / 47.84 g Ti
• 47.84 mol / 1 g Ti
• 47.87 g Ti / 1 mol Ti

Which compound has the smallest molar mass?

• CO
• CO₂
• H₂O
• H₂O₂

Which has a greater mass: 1 mole of scandium or 2 moles of boron?

• scandium
• boron
• neither
• more information is needed.

What is the mass in grams of 6.25 mol of copper (II) nitrate?

• 126 g
• 785 g
• 625 g
• 1172 g

What is the mass of 2.50 mol of oxygen gas O₂?

• 40 g
• 80 g
• 16 g
• 32 g

Avogadro's number of representative particles is equal to one_____.

• kilogram
• gram
• kelvin
• mole

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g
• 19.4 g
• 673 g
• 389 g

Fluorine is diatomic (2).  What is the molar mass of fluorine gas?

• 18.998 g/mol
• 37.996 g/mol
• 9 g/mol
• 18 g/mol

What is the mass of one mole of aluminum?

• 26.982 g
• 13 g
• 53.985 g
• 14 g