Question

. What is average atomic mass of carbon if the isotopes of carbon are as follows C -12, C – 13, C –
14 are 98% , 1% , 1% respectively

Answer 1

Answer:

$average \: atomic \: mass = \frac{m1x1 + m2x2 + m3x3}{100} \\ = \frac{12 \times 98 + 13 \times 1 + 14 \times 1}{100} \\ = \frac{1176 + 13 + 14}{100} \\ = \frac{1203}{100} \\ = 12.03 = 12$