WorksheetsStoichiometric Calculations
Total questions: 8
Worksheet time: 22mins
Nitrogen reacts with hydrogen to give ammonia, NH3 in a closed container. How many moles of H2 are needed to produce 25 mol of NH3?
N2 + 3H2 → 2NH3
A) 12.5
B) 25
C) 37.5
D) 50
E) 62.5
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
What is the sum of all coefficients when the following equation is balanced using the smallest possible whole numbers?
__ C2H2 + __O2 → __CO2 + __H2O
5
7
11
13
In a stoichiometric calculation to determine the mass of one substance that will react with a given amount, in moles, of a second substance, you need to know
only the mole ratio of the unknown substance to the given substance.
only the molar mass of the given substance.
both the mole ratio of the unknown substance to the given substance and the molar mass of the unknown substance.
the molar masses of all products and reactants.
How many grams of H2O can be produced from 3.91 g of O2?
What is the mass of CO2 produced when 35g of O2 reacts?
Calculate the number of moles of 55g of copper (II) chloride CuCl2
0.41 moles
0.82 moles
1.6 moles
.20 moles
What is the mass of 0.75 moles of (NH4)3PO4?
0.0044 g
91 g
110 g
74 g
