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Quiz on Relative Formula Mass and Percentage Composition GCSE
By Katie Cheung
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Last updated 5 months ago
5 questions
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Question 1
1.
Question 2
2.
Question 3
3.
Calculate the percentage composition of Carbon in carbon dioxide (CO₂).
Question 4
4.
Question 5
5.
What is the relative formula mass (RFM) of water (H₂O)?
18 g/mol
16 g/mol
20 g/mol
10 g/mol
Which of the following are needed to calculate the percentage composition of a compound? (Select all that apply)
Relative Formula Mass of the compound
Relative Atomic Mass of each element in the compound
Number of moles of the compound
Chemical formula of the compound
The relative formula mass of NaCl is 58.5 g/mol. True or False?
True
False
What is the percentage of hydrogen in ammonia (NH₃)?
11.2%
17.6%
14.0%
38.3%