Free Printable Unit 9 review

Worksheets

Unit 9 review

Total questions: 19

Worksheet time: 23mins

Name

Class

Date

What is the ratio of actual yield to theoretical yield time 100?

excess yield

Avogadro yield

percent yield

mole yield

What is the mole to mole ratio of $CO_2$ to $H_2O$ in this chemical equation?

2:2

1:2

1:4

1:1

What volume do ALL gasses occupy at STP (Standard Temperature and Pressure)?

22.4 $cm^3$

22.4 $mm^3$

22.4 $dm^3$

22.4 $dm$

For a given chemical reaction the theoretical yield is 10 g but the actual yield was 8.5 g. What was the percent yield?

85%

117%

.85%

1.17%

Which of the following can we determine with a balanced chemical equation?

The type of reaction occurring

The electron configuration of the elements involved

The molar ratio between any two elements in the equation

The molar mass of any element in the equation

Using the molar ratios in this reaction, how many moles of hydrogen would be produced if we use 15 moles of Mg in the reaction?

How many grams does 5 moles of Aluminum weigh? (Round answer to 1 decimal place)

(a)

If a reaction produced 2 moles of Hydrogen gas at STP, what volume of gas (in $dm^3$ ) in was produced?

22.4

44.8

11.2

1.008

Which number in a balanced chemical equation allows you to compare the amount of each element you have?

Coefficient

Subscript

Charge number

10.

This reaction shows how to make a grilled cheese. If we have 15 slices of both bread and cheese, what is our limited reactant (the one that keep the reaction from proceeding)

Bread

Cheese

11.

This reaction shows how to make a grilled cheese. If we have 22 slices of both bread and cheese, how many total grilled cheeses can we make?

(a)

12.

using the reaction equation, if we yielded 15 moles of AgCl, how many moles of $AlCl_3$ did we use in this reaction?

(a)

13.

If we have 98 g of Aluminum, how many moles of Aluminum do we have? (Round your answer to one decimal place)

(a)

14.

How many atoms are in a mole?

$6.022^{23}$

$6.022\times10^{-23}$

$6.022\times10^{23}$

$6.022^{-23}$

15.

if we have 3 moles of chlorine gas, what volume do we have of it? (assume STP)

106.35 L

11.82 L

67.2 L

7.46 L

16.

For the Balanced Reaction: 3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?

3mol Mg / 2 mol Fe

2 mol Mg/ 3 mol Fe

1 mol Fe/ 2 mol Fe

3 mol MgO / 2 mol Fe

17.

2H₂ + O₂ → 2H₂O
How many moles of oxygen are consumed if 8 moles H₂ are used?

18.

2Na + 2H₂O → 2NaOH+ H₂

How many grams of hydrogen are produced if 120 g of Na are available? MM of H = 1/008 g/mol, Na = 22.990 g/mol

5.2 g

2.6 g

690 g

45 g

19.

2 NaClO₃ (s) --> 2NaCl (s) +3 O₂ (g)

12.00 moles of NaClO₃ will produce how many grams of O₂? MM of O = 15.999 g/mol

256 g of O₂

576 g of O₂

288 g O₂

100 %

Unit 9 review

Total questions: 19

Worksheet time: 23mins

Similar Resources on Wayground