Answer:
1187.2
Explanation:
Given data:
Atomic mass of C₁₂ = 12.000000.
Multiplication of its abundance and mass = ?
Solution:
The natural abundance of carbon-12 is 98.93%.
98.93 × 12. 000000 = 1187.16
Answer in five significant figures:
1187.2
Answer : The average mass of carbon is, 11.872 amu
Explanation : Given,
Atomic mass of C-12 = 12.000000 amu
Natural abundance of C-12 = 98.93 % = 0.9893
Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
Average mass of carbon = Atomic mass of C-12 × Natural abundance of C-12
Average mass of carbon = 12.000000 × 0.9893
Average mass of carbon = 11.872 amu
Thus, the average mass of carbon is, 11.872 amu
