Reference no: EM132252053
1. Potassium chloride has solubility 43.0 g/ 100 g water at 50oC. Will a mixture of potassium chloride (110.0 g) and water (250 g) form a saturated solution at 50oC? If so, then what mass of potassium chloride will remain undissolved?
2. Calculate the concentration, % m/m, of a solution containing 26.0 g solute and 726.0 g water.
3. Calculate the molarity of a 10 % m/v solution of calcium nitrite. Use atomic weights to one place of decimals.
4. What volume (mL) of a 4.00 M solution must be diluted to 500 mL to yield a 5.00 x 10-3M solution?
5. List the atomic weight to two places of decimals of iron, calcium, chlorine, and beryllium.
6. List the atomic mass for these elements: iron (Fe), calcium (Ca), potassium (K), and oxygen (O).
7. What is the theory behind paper chromatography?
8. When is a dilution made in everyday life.