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WorksheetsMoles and Stoich Che,
Total questions: 15
Worksheet time: 10mins
How many molecules of carbon monoxide are produced by 0.25 mol of carbon?
1.2 X 1023 molecules of Co
1.9 X 1023 atoms of Co
1.9 X 1023 molecules of Co
1.2 X 1023 atoms of Co
What amount of moles of carbon are required to produce 55.4 dm3 of carbon disulfide (CS2 ) gas?
11.5 mol C
277 mol C
0.46 mol C
6.30 mol C
Magnesium reacts with Oxygen to form Magnesium Oxide. . Calculate how many grams of magnesium oxide should be produced by 0.2g Mg and excess O2 .
0.52g MgO
0.33g MgO
0.20g MgO
1.00g MgO
If 0.24g of Mg reacts with 0.16g of O to produce 0.4g of MgO. How much MgO will be produced by burning 12g of Mg?
(a)
Heating 12.4g of copper(ll) carbonate in a crucible produced only 7.0g of copper(ll) oxide. What was the percentage yield of copper(ll) oxide?
(a)
10.15g of copper ore was extracted from the ground, however only 9.95 of pure copper was produced. What was the purity within the ore?
0.98 %
0.15%
98%
If 8g of sulfur is burnt in oxygen, what volume of sulfur dioxide is produced?
0.25 mol
0.25 dm3
6dm3
how many grams are present in 1.896 moles of Nacl?
111 g
1896 g
111 mol
0.032 g
How many molecules are in 3.85 moles of CO2 ?
(a)
What is the molar mass for Potassium Phosphate ?
134 g/mol
212 g/ mol
134 mol
212 mol
a mole of carbon-12 is defined as
Avogadro's number
approximately 12 g
both A and B
neither A or B
What compound has a molar mass of 400 g/mol?
Na2SO4
MgSO4
NiNO3
Fe2(SO4)3
I will practice my equations and i will not fail my unit test on 1/30
Yes
No
What is the molar mass of Sulfuric acid?
(a)
How many moles of sugar are there in 500cm3 of a 3M sugar solution?
(a)
