What is the mass in grams of 9.45*10^24 molecules of methanol (CH3OH)?

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11-11-2016
Chemistry

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What is the mass in grams of 9.45*10^24 molecules of methanol (CH3OH)?

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Willchemistry Willchemistry · Answer 1 · 2016-11-11T22:49:04+01:00

Willchemistry Willchemistry

11-11-2016

Number of moles:

1 mole ---------- 6.02x10²³ molecules
? moles --------- 9.45x10²⁴ molecules

1 x ( 9.45x10²⁴) / 6.02x10²³ =

9.45x10²⁴ / 6.02x10²³ => 15.69 moles of CH3OH

Therefore:

Molar mass CH3OH = 32.04 g/mol

1 mole ------------ 32.04 g
15.69 moles ----- mass methanol

Mass methanol = 15.69 x 32.04 / 1 => 502.7076 g

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