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- The ratio of sodium chloride to ammonium in 100 kg of mixed ammonium normally used by three chemists is 7: 25.
Question 1:
The ratio of sodium chloride to ammonium in 100 kg of mixed ammonium normally used by three chemists is 7: 25. The amount of sodium chloride to be added to 100 kg of mixed ammonium to make the ratio 9 :25 is A. 5 kg
B. 5.25 kg
C. 6 kg
D. 6.25 kg
Feedback sodium chloride in 100 kg = 7/32 x 100 = 21.875 kg
ammonium in 100 kg = 25/32 x 100 = 78.125 kg
Now 78.125 is 25 parts out of (25 + 9) = 34 parts.
Hence 9 parts = 9/25 x 78.125 = 28.125
Amount to be added = 28.125 - 21.87 5= 6.25 Kg
ammonium in 100 kg = 25/32 x 100 = 78.125 kg
Now 78.125 is 25 parts out of (25 + 9) = 34 parts.
Hence 9 parts = 9/25 x 78.125 = 28.125
Amount to be added = 28.125 - 21.87 5= 6.25 Kg
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