Question

how many atoms os h present in 0.046 ​

Answer 1

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Molar mass of ethanol = 46g

No. of moles of ethanol = 0.046 / 46 = 1 × 10^-3

No. of molecules of ethanol = 1 × 10^-3 × 6.023 × 10²³ ===> 6.023 × 10^20

Each ethanol ( C2H5OH ) contains 6 hydrogen atoms

So,

No. of hydrogen atoms in 0.046 g of ethanol

===> 6.023 × 10^20 × 6

===> 3.6138 × 10²¹

Answer 2

Answer:

no of atoms is 6.022*10^23 .

Explanation: