Is Q11 20%?? I’m not sure. e average atomic mass of unknown element Q is 11.6...

Question

Question

Is Q11 20%?? I’m not sure.

science chemistry

Answer 1

Answer #1

Average atomic mass = 11.6 amu

11.6 = 10 * 0.1 + 11 * x + 12 * 0.7

x = (11.6 - 1 - 8.4)/ 11

x = 0.2

Q-11 isotope is of 20% abundance

Answer 2

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