75%ofClatomshaveamassnumberof33,whilsttheremaining25%haveamassnumberof39.Whatistherelativeatomicmassofchlorine?Giveexactanswer.
Question
75%ofClatomshaveamassnumberof33,whilsttheremaining25%haveamassnumberof39.Whatistherelativeatomicmassofchlorine?Giveexactanswer.
Solution
To calculate the relative atomic mass of chlorine, we need to take into account the mass numbers of its isotopes and their relative abundance.
Step 1: Convert the percentages into fractions. 75% = 0.75 25% = 0.25
Step 2: Multiply the mass number of each isotope by its relative abundance. For the isotope with a mass number of 33: 33 * 0.75 = 24.75 For the isotope with a mass number of 39: 39 * 0.25 = 9.75
Step 3: Add these values together to find the relative atomic mass. 24.75 + 9.75 = 34.5
So, the relative atomic mass of chlorine is 34.5.
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