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What would be the mass of 9.03 x 1021 molecules of hydrobromic acid (HBr)?
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What would be the mass of 9.03 x 1021 molecules of hydrobromic acid (HBr)?

User Andreasg
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9.03 * 10^21 molecules HBr *HBr 1 mol divided by 6.02 * 10 ^23 molecules HBr
* 1 mol HBr = 1.21 g HBr
so the mass would also be the molar mass which is 1.21 g/mol
User RavenMan
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