Question

will some one help plz



Which of the following statements is true?
Nonpolar solvents are useful for dissolving polar solutes.
Polar solvents are useful for dissolving nonpolar solutes.
Nonpolar solvents are not useful because they do not form solutions with water.
Nonpolar solvents are useful for dissolving nonpolar solutes.

Stir 500 g of cesium chloride into 200 g of water at 20°C. If 127 g sink to the bottom of the container, what is the solubility of cesium chloride per 100 g of water at 20°C?
186.5
373
127
286.5

Answer 1

1. Bonds between ions that are formed by the transfer of electrons are called _____. polar bonds
ionic bonds
polar covalent bonds
covalent bonds

2. A solution that contains all of the solute it can hold under the given conditions is called _____.
saturated
supersaturated
aqueous
unsaturated

3. All 204g of sugar will dissolve in 100g of water at 25ºC. This is the solubility of sugar. If 55g of sugar is dissolved in 50g of water at 25ºC then the solution is _______ compared to a solution that has 5g of sugar dissolved in 50g of water at 25ºC.
saturated
supersaturated
diluted
concentrated

4. Air contains 78 percent nitrogen, 21 percent oxygen, and one percent argon. Which gas is the solvent?
oxygen
nitrogen
argon
none of the above