Mole ConceptMedium
Question
The most abundant element dissolved in sea water is chlorine at a concentration of 19 g/kg of sea water. The volume of earth’s ocean is 1.4 × 1021 L. How many g-atoms of chlorine are potentially available from the oceans? The density of sea water is 1 g/ml (NA = 6 × 1023).
Options
A.7.5 × 1020
B.27 × 1021
C.27 × 1024
D.7.5 × 1019
Solution
Number of g-atoms of chlorine $= \frac{1.4 \times 10^{21} \times 19}{35.5} = 7.49 \times 10^{20}$
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