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Stoichiometry

Total questions: 15

Worksheet time: 29mins

Name
Class
Date
1.

Mention the reactants of this chemical equation

4 lines
2.

Mention the products of this chemical equation

4 lines
3.

Mention the states of this chemical equation

4 lines
4.

The number of atoms of each element in a molecule is called as

a)

Subscripts

b)

Coefficients

5.

The number of molecules (compounds) is called as

a)

Subscripts

b)

Coefficients

6.

Balance this following reaction

4 lines
7.

Balance this following reaction

4 lines
8.

Balance this following reaction

4 lines
9.

What kind of reaction is this

a)

Combination

b)

Decomposition

c)

Combustion

10.

Rapid reactions that have oxygen as a reactant, sometimes produce a flame.

Most often involve hydrocarbons reacting with oxygen in the air to produce CO2 and H2O.

What kind of reaction is this

a)

Combination

b)

Decomposition

c)

Combustion

11.

One substance breaks down into two or more substances is called as ... reaction

(a)  

12.

4 NH3 + 5 O2 -> 6 H2O + 4 NO


How many moles of H2O can be made using 1.6 mol NH3?

4 lines
13.

4 NH3 + 5 O2 -> 6 H2O + 4 NO


What mass of NH3 is needed to make 0.75 mol NO? Mr NH3=17

4 lines
14.

4 NH3 + 5 O2 -> 6 H2O + 4 NO


How many grams of NO can be made from 47 g of NH3? Mr NO=30

4 lines
15.

SiO2 + 3C → SiC + 2CO

I need to add 8 moles of Carbon to the reaction. How many grams of Carbon should I weigh? Ar C=12

a)

96 g

b)

0.67 g

c)

2.67 g

d)

48 g