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Two moles of an unknown substance were shown to have a mass of 240g. What molecular mass does the substance have?

Two moles of an unknown substance were shown to have a mass of 240g. What molecular mass does the substance have?
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Two moles of an unknown substance were shown to have a mass of 240g. What molecular mass does the substance have?

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User Opmet
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1 Answer

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The molecular mass of the unknown substance is calculated as follows

mass of unknown substance / moles of unknown substance

that is 240g /2 mol = 120 g/mol
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User Nicolas De Fontenay
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