Q is a fictitious compound. If the molar mass of the compound is 21.96grams/mol and you have 6.21 grams of Q, How many moles is this?
Solution:
Moles of Q = Mass of Q / Molar mass of Q
Hence,
Moles of Q = 6.21 g / 21.96 g mol-1 = 0.282787 mol = 0.283 mol
Moles of Q = 0.283 mol
Answer: 0.283 moles.
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