Question

What is the concentration in ppm if 1.6 g NH3 is dissolved into 147 mL of water?

A) 1.1×10^4 ppm
B) 0.0067 ppm
C) 0.011 ppm
D) 6.7×10^3 ppm

Answer 1

Option A is correct.

Step-by-step explanation:

Given data:

Mass of ammonia = 1.6 g

Volume of water = 147 mL

Concentration in ppm = ?

Solution:

As we know that,

1 g/mL = 1000000 ppm

1.6 g/147 mL = 0.011 g/mL

Now we will convert the 0.011 g/mL into ppm.

0.011 × 1000000 = 11000 ppm

In scientific notation:

1.1×10⁴ ppm

Thus, option A is correct.