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The number of moles of sodium oxide in 6...

The number of moles of sodium oxide in 620 g of it is

A

1 mol

B

10 moles

C

18 moles

D

100 moles

Text Solution

Verified by Experts

The correct Answer is:
B
Sodium oxide `rarr Na_(2)O`
Molecular weight `=46+16=62`
62 gm of `Na_(2)O=1` mole
620 gm of `Na_(2)O=10` mole.
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ERRORLESS -SOME BASIC CONCEPTS OF CHEMISTRY-Ordinary Thinking (Objective Questions) The mole concept
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  13. Which one of the following is the lightest?

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  14. The number of water molecules in 1L of water is :

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  16. 250 ml of a sodium carbonate solution contains 2.65 grams of Na(2)CO(3...

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  17. The mass of 1 mole of neutrons (m(n) = 1.675 xx 10^(-27) kg) is:

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  18. Which has maximum number of atoms

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  20. The total number of protons in 10g of calcium carbonate is (N(0) = 6.0...

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