Question

1. What is the mass percent of oxygen in H202? 2. What would happen if you added more solute to a saturated solution? 3. What would happen if you added more solute to an unsaturated solution? 4. Will a polar solute compound dissolve in a nonpolar solvent? 5. Will a salt dissolve in a nonpolar solvent? 6. Ammonia NH3, can be synthesized by the following reaction: 2NO+ 5H2 + 2NH3 +2 H2O If you start with 90.0 grams of NO and an unlimited supply of H2, what is the theoretical yield of ammonia? How much water is produced? 7. What is the percent yield if 25 grams of ammonia are produced? 8. If 5 grams of product are produced out of a possible 15 grams, what is the percent yield of that product?

Answer 1

1)

Molar mass of H2O2,
MM = 2*MM(H) + 2*MM(O)
= 2*1.008 + 2*16.0
= 34.016 g/mol


MM of H2O2 = 34.016
Lets calculate the mass of element

mass of O = 2*MM(O)
= 32 g

Mass % of O = (32*100)/34.016
= 94.07 %
Answer: 94.07 %

2)
Since solution is already saturated. Adding more solute will make the solution supersaturated and precipitation would start.

3)
If solution is unsaturated and we add more solute, the solute will dissolve.

4)
No.
Polar solute dissolves in polar solvent.
Non Polar solute dissolves in non polar solvent.

Only 1 question at a time please

Only 4 parts at a time please