Question Detail

CHM 101 CHM 101 Past Questions Objective Question
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Question

The atomic masses of Cl (75.53%) and (24.47%) are 34.968 amu and 36.956 amu respectively. Calculate the average atomic mass of chlorine.
Options
A 35.00
B 35.45
Correct Answer
C 35.50
D 36.00
Correct Answer

Option B is the correct answer.

Detailed Explanation

Average = (0.7553 × 34.968) + (0.2447 × 36.956) = 26.42 + 9.04 = 35.46 amu ≈ 35.45 amu.

Hint

Multiply each isotope's mass by its fractional abundance and sum.

Question Info

Course: CHM 101
Topic: CHM 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 1132 of 1872
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