WorksheetsMass to Mole Stoichiometry | Science Explained Quiz
Total questions: 15
Worksheet time: 9mins
What is the first step in solving a stoichiometry problem according to the text?
Calculate the molar mass of the reactants
Balance the chemical equation
Convert grams to moles
Identify the limiting reagent
What does the 'two T's in our bridge' refer to in the stoichiometry process described?
Two different temperatures
Two types of elements
Two trials needed
Two-step conversion process
What is the molar mass of iron used in the calculations?
55.85 grams/mole
54.94 grams/mole
58.93 grams/mole
56.85 grams/mole
How many moles of Fe2O3 are required to produce 75.8 grams of Fe?
1.35 moles
1.51 moles
2.27 moles
0.68 moles
What is the correct mole to mole ratio of iron to Fe2O3 from the balanced chemical equation?
2 moles of Fe to 4 moles of Fe2O3
3 moles of Fe to 2 moles of Fe2O3
4 moles of Fe to 2 moles of Fe2O3
1 mole of Fe to 1 mole of Fe2O3
What is the result of the calculation 275 * 1 * 3 in the context of converting grams of carbon to moles of CO2?
825
275
1025
548
According to the text, what should you always check before starting stoichiometry calculations?
The temperature conditions
The purity of reactants
The balanced chemical equation
The pressure conditions
What is the purpose of the 'road map' mentioned in the stoichiometry process?
To plan the timing of the reaction
To map the physical location of the experiment
To guide the experimental setup
To outline the steps of the conversion process
How many moles of CO2 would be produced if 275 grams of carbon reacted with an excess of Fe2O3?
20.3 moles
25.1 moles
22.9 moles
24.5 moles
What is the molar mass of carbon used in the calculations?
11.01 grams/mole
13.01 grams/mole
14.01 grams/mole
12.01 grams/mole
1 Cl2 + 2 KBr → 1 Br2 + 2 KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?
(a) + 35 = 74g x 2 = 148g 39 + 80 = (b) g x 2 = 238g
(c) / (d) x 148 = (e) g
1 Fe2O3 + 3H2 → 2 Fe + 3 H2O
How many moles of iron (Fe) can be made from 3.0 moles of Fe2O3?
(a) / (b) x (c) = (d) mol Fe
1 B2H5 + 3 O2 → 2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H5?
16 x 2 = (a) x 3 = 96 g (11 x 2) + (1 x 5) = 27 g
(b) / (c) x (d) = (e) g
1 P4 + 3 O2 → 2 P2O3
Match the ratio to the correct substances:
1:3
P:O2
1:2
P:P2O3
3:2
O2:P2O3
3:1
O2:P
2:3
P2O3:O2
If you are converting from grams of substance A to grams of substance B, drag the correct order of the conversion process:
(a) ---> (b) ---> (c) ---> (d)
