Question detail
Calculate the mass of 0.5 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. 49 g
- B. 98 g
- C. 24.5 g
- D. 50 g
Answer
49 g
Explanation
The relative formula mass of sulfuric acid (H2SO4) is 2(1) + 32 + 4(16) = 98 g/mol. Therefore, 0.5 moles of H2SO4 would have a mass of 0.5 x 98 g = 49 g.
Common mistake
Confusing Mass and Moles
Students often confuse mass (in grams) with the number of moles when calculating the amount of substance.
Always remember to use the formula: moles = mass / relative formula mass, ensuring you convert mass to the correct unit before calculation.
Related flashcards
Flashcard 1 of 5
Press Space to flip, arrows to move
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.
0 of 4 attempted