Heating gives . What volume of at STP comes from 250 g of ? (Ca = 40, C = 12, O = 16; molar volume 22.4 L/mol)
Answer and explanation
Correct answer: D. L
- Step 1: Moles of , and it gives the same moles of .
- Step 2: L.
Answer
L.
Why not the others: L: The molar mass of was used for . L: The mass was not converted to moles. L: The number of moles was given, not the volume.
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