Question detail
What is the mass of 2 moles of sulfuric acid (H2SO4)?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Use of amount of substance in relation to masses of pure substances
Question
- A. 196 g
- B. 98 g
- C. 32 g
- D. 64 g
Answer
196 g
Explanation
The relative formula mass of sulfuric acid (H2SO4) is 2(1) + 32 + 4(16) = 98 g/mol. Therefore, the mass of 2 moles is 2 x 98 = 196 g.
Common mistake
Confusing Mass with Moles
Students often confuse the mass of a substance with the amount in moles, leading to incorrect calculations when converting given masses into moles.
To convert mass to moles, use the formula: moles = mass / relative formula mass. Ensure you calculate the relative formula mass correctly before performing the conversion.
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