WorksheetsStoichiometry
Total questions: 25
Worksheet time: 25mins
What is Stoichiometry?
It's the quantitative relationship between reactants and products in a reaction
It's the study of bugs
It's the mas of the object
it's the volume of the object
What is a Mole?
An Animal that digs
A unit of measure that counts number of atoms
A blemish on the face
A relationship between products and reactants
What are products?
It's the answer when with multiplication
It's the atomic mass
The end part of the reaction (behind the arrow)
The start of the reaction (in front of the arrow)
NaClO3 (s) --> 2NaCl (s) +3 O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
256 g of O2
576 g of O2
288 g O2
Where is the mole to mole ratio in this set up? (pick one)
Locate the following on the example stoichiometry calculation.
mole to mole ratio
mole to gram ratio for Al
mole to gram ratio for AlCl3
what was given to start
Where is the mole to gram ratio for Al in this set up? (pick one)
For the reaction represented by the equation Cl2 + 2KBr → Br2 + 2KCl, how many grams of potassium chloride can be produced from 356 grams potassium bromide?
749 g
225 g
479 g
814 g
How many molecules are in 13.5 g of sulfur dioxide, SO2?
(a) x (b) x (c)
(d) 1 mol SO2
13.5 g SO2
1 mol SO2
6.022 x 10^23 molecules
64.066 g SO2
How many moles are equal to 145 g of zinc nitrate, Zn(NO3)2?
1 mol Zn(NO3)2
189.36 g Zn(NO3)2
How many moles are equal to 145 g of zinc nitrate, Zn(NO3)2?
1 mol Zn(NO3)2
189.36 g Zn(NO3)2
Match the following conversions to where you get them.
mole ratio
big numbers from the reaction
molar mass
periodic table
Liters to mole
MEMORIZED
22.4 L = 1 Mole
particles to moles
MEMORIZED
6.022 x 1023 particles = 1 mole
How many moles are equal to 1.20 x 10^24 atoms of sulfur?
1.20 x 1024 atoms of S x (a)
(b)
1 mol S
6.02 x 10^23 atoms S
Where is the mole to gram ratio for AlCl3 in this set up? (pick one)
B2H6 + 3O2 -->2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H6?
13.8 g O2
3.86 mol of O2
124 g O2
2CO + O2 −-> 2CO2
How many liters of carbon dioxide are produced from 10L of carbon monoxide?
10
20
1
5
4 Al + 3 O2 –> 2 Al2O3 How much aluminum would be needed to completely react with 45 grams of O2?
05 moles
3.75 moles
1.875 grams
1.875 moles
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
0.85 g
290 g
450 g
870 g
How many liters of NH3 are needed to react completely with 30.0L of NO?
4NH3+6NO --> 5N2 + 6H2O
5.0 L
20.0 L
7.5 L
120.0 L
Use the following equation:
NaIO3(aq) + 6HI(aq) --> 3I2(s) + NaI(aq) + 3H2O(l)
How many moles of iodine can be made from 6.55 moles of NaIO3?
4.55 moles I2
23.18 moles I2
19.65 moles I2
34.99 moles I2
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
What is the purpose of a balanced chemical equation in stoichiometry?
To show the qualitative relationship between reactants and products
To show the quantitative relationship between reactants and products
To show the physical states of reactants and products
To show the color changes during the reaction
In a stoichiometric calculation, what is the first step when given the mass of a reactant?
Convert the mass to moles using the molar mass
Convert the mass to volume using the density
Convert the mass to molecules using Avogadro's number
Convert the mass to energy using Einstein's equation
Which of the following best describes the concept of a limiting reactant in stoichiometry?
The reactant that is present in the smallest mass
The reactant that determines the amount of product formed
The reactant that is left over after the reaction
The reactant that speeds up the reaction
In the reaction @@ ext{2H}_2 + ext{O}_2 ightarrow ext{2H}_2 ext{O}@@, how many moles of water are produced from 5 moles of oxygen?
5 moles
10 moles
2.5 moles
20 moles
