Average atomic mass Knowledge-Based Practice

Chemistry · Atomic Structure · Chemistry · Atoms & Subatomic Particles

1 Chemistry practice questions on Average atomic mass. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    A naturally occurring sample of boron consists of 19.90% 10B^{10}\text{B} with an atomic mass of 10.01 amu and 80.10% 11B^{11}\text{B} with an atomic mass of 11.01 amu. What is the average atomic mass of boron?

    • A) 10.21 amu
    • B) 10.51 amu
    • C) 11.01 amu
    • D) 10.81 amu

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