Question

Calculate the mass of 2.5grams molecules of H2S

Answer 1

Explanation:

H2S= 2+32

=34

x=34*2.5

=85g

Answer 2

Answer: 85 g

Explanation:

No. of moles of H2S = 2.5 mol

Molar mass of H2S = (1×2) + 32

= 2 + 32

= 34 g / mol

No. of moles = Given mass / Molar mass

2.5 = x / 34

x = 2.5 × 34

x = 85 g

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