Question

Q29. Find no. of moles in (i) 2g He ​

Answer 1

Answer:

2g He = 0.49967496143758

Explanation:

In chemistry, the mole is the standard measurement

of amount.

 1 mole = 6.02 x 1023 atoms (Avogadro’s number)

When substances react, they do so in simple ratios of

moles. However, balances give readings in grams.

Balances DO NOT give readings in moles.

So the problem is that, when we compare amounts of

one substance to another using moles, we must

convert from grams, since this is the information we

get from balances.

Answer 2

Answer:

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