Quantitative Analysis Review

What is the molar mass of (NH₄)₂CO₃ ?

• 144 g
• 138 g
• 96 g
• 78 g

What is the mole ratio between Cu and Ag?
1Cu + 2AgNO₃ →1Cu(NO₃)₂ +2 Ag

• 1 mole Cu : 1 mole Ag
• 1 mole Cu : 2 mole Ag
• 2 mole Cu : 1 mole Ag
• 1 mole AgNO₃ : 1 mole Ag

N₂ +  3H₂ → 2NH₃ 
How many moles of hydrogen are needed to react with 5 moles of nitrogen?

• 6
• 2
• 3
• 15

2H₂   +   O₂  →  2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

• 4 moles
• 8 moles
• 16 moles
• 2 moles

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from 3 moles of Fe₂O₃?

• 6 moles Fe
• 4 moles Fe
• 2 moles Fe
• 1 moles Fe

Cl₂ + 2 KBr → Br₂ + 2 KCl
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?

• 749 g
• 223 g
• 479 g
• 814 g

Tags

NGSS.HS-PS1-7

Fe (s) + S (l) --> FeS (s)  

In the experiment above, 7.62 g of Fe are allowed to react with 8.67 g of S.
How much FeS is formed?

• 14.8 g
• 12.2 g
• 13.7 g
• 19.9 g

A chemist interested in the efficiency of a chemical reaction would calculate the

• mole ratio
• rate of reaction
• percent yield
• energy released

What is a Excess Reagent?

• amount you end with
• what you run out of first
• what you have left over
• what you start with

Tags

NGSS.HS-PS1-7

If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the

• theoretical yield
• mole ratio
• actual yield
• percentage yield