To calculate the relative atomic mass of chlorine, we can use the formula:
Relative Atomic Mass = (Isotope Mass × Isotope Abundance) + (Isotope Mass × Isotope Abundance) + ...
Let's calculate it using the given information:
Isotope 1: Chlorine-35 Relative abundance: 75.53% Isotope mass: 35
Isotope 2: Chlorine-37 Relative abundance: 24.47% Isotope mass: 37
Relative Atomic Mass = (35 × 0.7553) + (37 × 0.2447)
Calculating the expression:
Relative Atomic Mass = 26.4135 + 9.0339
Relative Atomic Mass ≈ 35.4474
Therefore, the relative atomic mass of chlorine when natural chlorine is a mixture of chlorine-35 and chlorine-37 with relative abundances of 75.53% and 24.47% respectively is approximately 35.4474.