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GCSE
Gcse Chemistry
Analysing Substances - Quantitative
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Q.1
What is the relative formula mass of copper sulfate CuSO ?
0%
160 amu
0%
96 amu
0%
128 amu
0%
144 amu
Q.2
What is the relative formula mass of MgF ?
0%
60 amu
0%
62 amu
0%
43 amu
0%
64 amu
Q.3
What % mass of magnesium oxide is magnesium?
0%
60%
0%
40%
0%
30%
0%
70%
Q.4
What is the % mass of hydrogen in methane CH ?
0%
20%
0%
25%
0%
75%
0%
12.5%
Q.5
Calcium reacts with oxygen as shown by this reaction 2Ca + O → 2CaO. What mass of oxygen will react with 60g of calcium?
0%
12g
0%
24g
0%
6g
0%
14g
Q.6
Sodium hydroxide reacts with chlorine to make bleach as shown by this reaction. 2NaOH + Cl → NaOCl + NaCl + H O. If we have a solution containing 100g of sodium hydroxide, how much chlorine gas should we pass through the solution to make bleach?
0%
28.65g
0%
82.45g
0%
88.75g
0%
86.57g
Q.7
If 9g of aluminium reacts with 35.5g of chlorine, what is the empirical formula of the compound formed?
0%
AlCl
0%
AlCl2
0%
AlCl3
0%
Al3Cl
Q.8
A compound contains 13.5g of calcium, 10.8g of oxygen and 0.675g of hydrogen. What is its empirical formula?
0%
CaOH
0%
CaOH2
0%
CaO2H
0%
Ca(OH)2
Q.9
A reaction that could theoretically produce 200g of product only produces 140g. What is its % yield?
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70%
0%
14.2%
0%
142%
0%
7%
Q.10
Ammonium nitrate NH NO is used as a fertiliser. What is the % mass of nitrogen in it?
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21%
0%
37%
0%
17.5%
0%
35%
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