A chemist has two solutions of hydrochloric acid in stock. One is 50% solution and the other is 80% solution. How much of each should be used to obtain 100 ml of a 68% solution.

A chemist has two solutions of hydrochloric acid in stock. One is 50% solution and the other is 80% solution. How much of each should be used to obtain 100ml of a 68% solution.

A chemist has one solution which is 50% acid and another solution which is 25 % acid. How much each should be mixed to make 10 litres of a 40 % acid solution ? (Use Cramer's rule to solve the problem).

A chemist has one solution containing 50% acid and a second one containing 25% acid. How much of each should be used to make 10 litres of a 40% acid solution?

600 g of sugar solution has 40% sugar in it. How much sugar should be added to make it 50% in the solution?

300g of salt solution has 40% salt in it. How much salt should be added to make it 50% in the solution?

300g of salt solution has 40% salt in it. How much salt should be added to make it 50% in the solution?

600 g of sugar solution has 40% sugar in it. How much sugar should be added to make it 50% in the solution?

20 mL of a solution of sulphuric acid neutrlise 21.2 mL of 30 % solution of sodium carbonate. How much water should be added to 100 mL of this solution to bring down its strength to decinormal ?