6.02 × 1 0 20 molecules of urea are present in 100 mL of its solution. The concentration of urea Solution: is

Question

6.02 × 1 0 20 molecules of urea are present in 100 mL of its solution. The concentration of urea Solution: is, 0.02 M, 0.001 M, 0.01 M, 0.1 M

MARKS App · Accepted Answer

N A = 6.02 × 1 0 23 = 1 m o l 6.02 × 1 0 20 m o l e c u l e s = 0.001 m o l i n 100 m l ( 0.1 L ) s o l u t i o n So molar concentration = m o l e v o l u m e i n L 0.001 0.1 = 0.01 M

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