Question

calculate the mass of :a) molecule of water. b) 1 mole of carbon dioxide ​

Answer 1

Answer:18/ 6.022 × 10^23

Explanation:no of molecules in 18 g of water is equal to Avogadro number

Answer 2

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The molar mass of water is 18.015 g/mol. This was calculated by multiplying the atomic weight of hydrogen (1.008) by two and adding the result to the weight for one oxygen (15.999). Please remember that you need the molar mass first when trying to find the average mass of one molecule.

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One mole of carbon dioxide molecules has a mass of 44.01g, while one mole of sodium sulfide formula units has a mass of 78.04g. The molar masses are 44.01g/mol and 78.04g/mol respectively

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