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Explain why ammonia gas cannot be dried with concertrated hydrochloric acid during it's preparation in the laboratory.

What is the difference between the highest positive factor of 19 and the highest negative factor of 21?

An electrical compay is owned by three partners X,Y and Z and it is agreed that their profit will be shared such that X gets 5/12, Y gets 1/3 and Z receives 5/12. At the end of the year X receives #5000 more than Y. What is the total profit of the company...

A block hawk picks a 2kg chicken and lifts it to a branch of a tree 15m from the ground in 1minute. a) how much work does the hawk do in lifting the chicken

720 apples is shared in the ratio 1/5 3/10 7/1 what is the ratio of each