Advanced Stoichiometry

What is the molar mass of carbon dioxide gas?

• 12.01 g/mol

• 28.01 g/mol

• 16.0 g/mol

• 44.01 g/mol

What is used to convert from moles of a known substance to moles of an unknown substance?

• Molar Ratio

• Avogadro's Number

• Molar mass

• Density

Nitrogen and hydrogen gas reacts to produce ammonia (NH₃). How many moles of hydrogen gas is required to produce 312 moles of ammonia?

• 312 moles NH₃

• 156 moles NH₃

• 468 moles NH₃

• 104 moles NH₃

A solid piece of carbon reacts with water vapor to produce methane (CH₄) and carbon dioxide gas. How many grams of carbon would be required to produce 1.0 mole of carbon dioxide gas?

• 24g C

• 1.0g C

• 12g C

• 48g C

Iron (III) oxide decomposes to produce a solid piece of iron and oxygen gas. If you reacted 2.00mol of iron (III) oxide, how many molecules of oxygen gas will be produced?

• 6.02x10²³ rp O₂

• 1.80x10²³ rp O₂

• 1.20x10²³ rp O₂

• 1.80x10²³ rp O₂

A sample of ammonia (NH₃) has a mass of 45.5g. How many molecules are in this sample?

• 2.67 rp NH₃

• 1.61x10²⁴rp NH₃

• 9.02x10^-16rp NH₃

• 2.74x10²⁵rp NH₃

3.0g of propane (C3H8) was combusted. How many grams of water vapor was produced?

• 1.0g CO₂

• 3.0g CO₂

• 390g CO₂

• 9.0g CO₂

Calcium nitrate and potassium phosphate react to produce calcium phosphate and potassium phosphate. If you reacted 220g of calcium nitrate, how many milligrams of potassium nitrate are produced?

• 6.8x10⁴ mg

• 2.7x10⁵ mg

• 0.81 mg

• 4.4x10⁷ mg