Question

The half-life of a substance in first-order reaction is 15 minutes. Calculate the rate constant.

Answer 1

1 mole of water contains 6.023 x 10^(23) molecules of water. But each molecule of water contains 10 electrons. Thus 6.023 x 10^(23) molecules of water will contain 10 x 6.023 x 10^(23) electrons= 6.023 x 10^(24) electrons