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3 years ago

How many molecules are in 68.0 g of H2S

Chemistry

1 answer:

Kryger [21]3 years ago

3 0

The correct answer is 12.044 × 10²³ molecules.

The molecular mass of H₂S is 34 gram per mole.

Number of moles is determined by using the formula,

Number of moles = mass/molecular mass

Given mass is 68 grams, so no of moles will be,

68/34 = 2 moles

1 mole comprises 6.022 × 10²³ molecules, therefore, 2 moles will comprise = 6.022 × 10²³ × 2

= 12.044 × 10²³ molecules.

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2 years ago

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Formula used to calculate average atomic mass follows:

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As we are given that,

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