Question

What weight in grams os representedby 2 mole of co2 and 5 mole of of nh3?

Answer 1

Weight in grams represented by 2 moles of co2 and 5 moles of nh3 is 88g and 85g respectively.

Given:

2 moles of co2 and 5 moles of nh3.

To Find:

Weight in grams represented by 2 moles of co2 and 5 moles of nh3.

Solution:

To find the weight in grams represented by 2 moles of co2 and 5 moles of nh3 we will follow the following steps:

As we know,

Molecular mass is equal to the mass of 1 mole of that molecule.

Also,

Molecular mass is the sum of the mass of all the atoms.

Now,

The atomic mass of nitrogen = 14g

The atomic mass of hydrogen = 1g

The atomic mass of oxygen = 16g

The atomic mass of carbon = 12g

The molecular mass of carbon dioxide(CO2) =

$12 + 2 \times 16 = 12 + 32 = 44g$

The molecular mass of ammonia (NH3) =

$14 + 3 = 17g$

Mass of 2 moles of CO2 = 2 × molecular mass of 1 CO2 = 44 × 2 = 88g

Mass of 5 moles of NH3 = 5 × molecular mass of 1 NH3 = 17 × 5 = 85g

Henceforth, Weight in grams represented by 2 moles of co2 and 5 moles of nh3 is 88g and 85g respectively.

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