Question

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which of the following has maximum number of molecules 1) 7g N2 2) 2g H2 3) 8g O2 4) 20g NO2​

Answer 1

Explanation:

number of molecules is equal gram molecules weight of molecules give weight first question 7 gram the number of molecules is equal

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Answer 2

Explanation:

No. Of molecules = no. of moles*avogadro number(N)

Number of moles = gram molecular weight of molecule/Given weight

(G.M.W/given weight)

1) G. M. W = 2*14 = 28g

given weight =7g

No.of moles=28/7

=4

No. Of molecules = 4*N

2)G.M.W=2*1=2g

Given weight = 2g

No.of moles= 2/2

=1

No. Of molecules = 1*N

3)G.M.W = 2*8 = 16g

Given weight =8g

No.of moles = 16/8

=2

No. Of molecules = 2*N

4) G.M.W = 46g

Given weight = 20g

No.of moles= 46/20

No. Of molecules = 46/20*N

Hence 7g of N2 consists of most no. of molecules.

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