75%ofClatomshaveamassnumberof30,whilsttheremaining25%haveamassnumberof36.Whatistherelativeatomicmassofchlorine?Giveexactanswer.
Question
75%ofClatomshaveamassnumberof30,whilsttheremaining25%haveamassnumberof36.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% becomes 0.75 and 25% becomes 0.25.
Step 2: Multiply the mass number of each isotope by its relative abundance. For the isotope with a mass number of 30: 30 * 0.75 = 22.5 For the isotope with a mass number of 36: 36 * 0.25 = 9
Step 3: Add these values together to find the relative atomic mass. 22.5 + 9 = 31.5
So, the relative atomic mass of chlorine is 31.5.
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