Question

The atomic mass of one atom of 12 C in g is: 1

(a) 12 x10-23

(b) 1.993 x10-23

(c) 6.022x10-23

(d) 6.022x1023​

Answer 1

Given:-

one atom of 12 C

To Find:-

The atomic mass of one atom of 12 C in g

Solution:-

We know that the Mass of 1 mole of C = 12g

Since 1 mole =  6.022 x 10²³ atoms

⇒ Mass of 6.022 x 10²³ atoms = 12 g

⇒ Mass of 1 atom  = 12 / 6.022 x 10²³ = 1.993 x 10 ⁻²³

Hence, The atomic mass of one atom of 12 C in g is  1.993 x 10 ⁻²³