13. A sample of impure silver (1.5 g) is heated with sulphur
to form Ag2S. The mass of Ag2S formed was 0.124 g
What was the percentage yield of silver sulphide?
(a) 6.41%
(b) 7.20%
(c) 8.27%
(d) 10.8%
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Answered by
0
Answer:
Perfect questions for guys interested in maths..
2. The value of x + x(xx) when x = 2 is:
(a) 10, (b) 16, (c) 18, (d) 36, (e) 64
Solution:
x + x(xx)
Put the value of x = 2 in the above expression we get,
2 + 2(22)
= 2 + 2(2 × 2)
= 2 + 2(4)
= 2 + 8
= 10
Answer: (a)
Answered by
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Answer: (b) 7.20%
Explanation:
7.20 can be written as 7.2 since 0 after a decimal point is not necessary
hope this helps! <3
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