Question

Which of the following will have maximum mass ?
a) 1g iron
b) 10²⁰ molecules of CO₂
c) 0.1 mole of NH₃
d) 10²² atoms of carbon

class 9th
please tell me write answer​

Answer 1

Answer:

option C is right answer not sure for the answer

Answer 2

Answer:

The correct option is (c) 0.1 mole of $NH_{3}$.

Explanation:

We find the mass of $NH_{3}$ using the following mole formula-

$Moles= \frac{Mass}{Molar Mass}$

We have the following data-

1. The moles of $NH_{3}$- 0.1 mol
2. The molar mass of $NH_{3}$- (14+1+1)= 17g/mol

We substitute these values in the mola formula.

$0.1=\frac{Mass}{17}$

$1.7g=Mass$

0.1 mole of $NH_{3}$ has 1.7g.

In the rest of the options, the masses of the elements or compounds are less.