Question

How many grams of ammonia ( NH3 ) are there in 2.03 mol of the compound?

Answer 1

`\huge{ \boxed{28.42 \: g}}`

Step-by-step explanation:

The number of grams or the mass of
`NH_3` can be found by using the formula;

`m = M * n`

where

m is the mass in grams

M is the molar mass in g/mol

n is the number of moles

From the question;

n = 2.03 mol

Molar mass (M) of
`NH_3` = 14 + (1×3) = 14 + 3 = 17 g/mol

`\therefore \:m = 17 * 2.03 = 28.42 g`