How many GRAMS of potassium are present in 1.84 grams of potassium chloride

1.How many GRAMS of potassium are present in 1.84 grams of potassium chloride ?

2.How many GRAMS of potassium chloride can be made from 4.81 grams of potassium ?

3.How many GRAMS of boron are present in 1.36 grams of boron trichloride ?


4. How many GRAMS of boron trichloride can be produced from 3.26 grams of chlorine ?

1. atomic weight of potassium divided by molecular weight of potassium chloride, multiply that by 1.84 grams.

2. divide molecular weight of potassium chloride by atomic weight of potassium, multiply it by 4.81 grams.

repeat same idea for 3 &4

Good that you don't like people doing your homework for you.

Try getting the atomic weights, adding them in proportion to the compound formula, working out the % of the element of interest and applying that 5 to the mass given. Do one now and go back and work the rest later, at least you will have shown you understand the principle.