Among the following identify the molecules with gram molecular mass 44 g.

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${NO}_{2}$

$C_{3} H_{8}$

$N_{2} O$

${CO}_{2}$

answer is A, C, D.

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Detailed Solution

Gram molecular mass of a molecule is defined as the weight of 1 mole of molecule that is represented in grams.

Let us see the gram molecular mass of each molecule

The gram molecular mass of ${CO}_{2}$ is find as given below.

GMW = 1(C)+2(O)

=1(12g)+2(16g)=44g

The gram molecular mass of ${NO}_{2}$ is find as given below.

GMW=1(N)+2(O)

=1(14g)+2(16g)=46g

The gram molecular mass of $C_{3} H_{8}$ is find as given below.

GMW=3(C)+8(H)

=3(12g)+8(1g)=44g

The gram molecular mass of $N_{2} O$ is find as given below.

GMW=1(N)+2(O)

=2(14g)+1(16g)

=44g

Therefore, the molecules with gram molecular mass as 44 g are ${CO}_{2}, C_{3} H_{8} and N_{2} O$

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