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61 A chemist has one solution which is 50% acidic and a second solution which is 25% acidic. How much of each should be mixed together make 10 litres of 40% acidic solution? |
| Answer» 61 A chemist has one solution which is 50% acidic and a second solution which is 25% acidic. How much of each should be mixed together make 10 litres of 40% acidic solution? | |