WorksheetsGFM/% Mass/Moles
Total questions: 25
Worksheet time: 1hrs 12mins
What is the % by mass of O in H2O?
(Answer to 1 d.p.)
(a)
What is the % by mass of O in SO3?
(a)
What is the % by mass of Na in Na2CO3?
(Answer to 1 d.p.)
(a)
% by mass of N in Ca(NO3)2?
(Answer to 1 d.p.)
(a)
What is the % by mass of O in Ca(NO3)2?
(Answer to 1 d.p.)
(a)
% by mass of Cl in FeCl3?
(Answer to 1 d.p.)
(a)
What is the % by mass of N in NH4NO3?
(a)
What is the % by mass of S in Al2(SO4)3?
(Answer to 1 d.p.)
(a)
What is the % by mass of Li in lithium oxide Li2O?
(Answer to 1 d.p.)
(a)
What is the % by mass of Cr in chromium(III) oxide - Cr2O3?
(Answer to 1 d.p.)
(a)
% by mass of O in calcium hydroxide - Ca(OH)2?
(Answer to 1 d.p.)
(a)
What is the % by mass of N in ammonium iodide NH4?
(a)
Match the substances to the correct gram formula mass (GFM):
27
Al
38
F2
44
CO2
40
NaOH
56
KOH
85.0 g of NaOH is equal to how many moles?
3400 moles
45 moles
0.47 moles
2.1 moles
4.0 moles of H2O would have a mass of ___________?
72.0 g
68.0 g
0.22 g
4.5 g
6.0 g of Carbon is equal to how many moles?
1.0 moles
0.5 moles
2.0 moles
72.0 moles
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
6.88 mol
Mg + 2HCl --> MgCl2 + H2
How many grams of MgCl2 can be created using 15.0 grams of Mg?
0.06 grams
15.0 grams
25.67 grams
58.47 grams
How many grams are in 0.75 moles of NH3 (ammonia)?
8.75 grams
12.75 grams
10.5 grams
15.25 grams
A sample contains 0.1 moles of Na2CO3. How many grams of Na2CO3 are in the sample?
10.6 g
15.6 g
5.6 g
1.6 g
How many moles of magnesium in a 20g strip?
0.81
0.82
0.83
0.84
Calculate the number of moles in 25cm3 of 0.1M KOH
0.25
0.025
0.0025
2.5
Calculate the number of moles in 40cm3 of 0.2M KOH
0.008
0.025
0.08
2.5
Calculate the number of moles in 22.80cm3 of 0.25M H2SO4
0.082
0.0057
0.08
0.025
Rank the following from lowest to highest GFM.
N2
NaOH
Be(OH)2
NH4NO3
Pb(NO3)2
