Chemistry jamb 2006

What is the molar mass of a substance, if 0.4 mole of the substance has a mass of 25.0g?

a

62.5 g

b

40.0 g

c

6.3 g

d

2.5 g

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Correct Option
a

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Xiteovgh
8 years ago
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Mole=mass/molar mass
Molar mass =mass/mole
Mm=25/0.4=62.5g

Amount in Mole= mass / molar mass

Mass = Amount in moles X molar mass
mass = 0.4 X 25 =10

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