Intro to Stoich

What is the given?

• 3.4

• 3.4 moles

• 3.4 moles KClO₃

• moles O₂

What is the unknown? (Our want)

• 3.4

• 3.4 moles

• 3.4 moles KClO₃

• moles O₂

4NH₃ + 5O₂ --> 4NO + 6H₂O

What is the total number of moles of H₂O produced when 12 mole of NH₃ is used up?

• 15

• 18

• 20

• 24

Mole ratios are obtained from the

• balanced chemical equation
• periodic table
• molar mass

1) Which is an acceptable fraction (mole ratio) when converting 16 moles of HCl to moles of H₂SO₄? Look at the image attached.

2 HCl + 1 Na₂SO₄ → 2 NaCl + 1 H₂SO₄

• 
• 
• 
• 

What is the given?

• 3.4

• 3.4 moles

• 3.4 moles KClO₃

• moles O₂

What is the molar mass of table salt (NaCl)?

• 58.443 mol / 1 g

• 35.453 g / 1 mol

• 22.990 mol / 1 g

• 58.443 g / 1 mol

Calculate the molar mass of KOH.

• 28 g / 1 mol

• 56 g / 1 mol

• 84 mol / 1 g

• 56 mol / 1 g

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

What is the mass of 0.89 mol of CaCl₂?

• 0.0008 moles

• 0.008 grams

• 98.9 grams

• 98.9 moles