How many moles are present in 8 g of NaOH? (Relative formula mass = 40)
Answer and explanation
Correct answer: C. 0.2 mol
- Step 1: Number of moles .
- Step 2: mol.
Answer
0.2 mol.
Why not the others: 320 mol: it multiplies mass by instead of dividing. 5 mol: it divides by the mass. 0.4 mol: it doubles the correct value.
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