Describe the best way ryan can increase the rate of dissolving of lead (ii) chloride in a solution. a) increase the temperature of the water. b) increase the concentration of the salt. c) increase the particle size of the solute. d) agitate the lead (ii) chloride in cool water.

Solubility is the amount of solute that can dissolve in a given solvent at a specified temperature or pressure. Therefore, solubility is affected by pressure and temperature such that increase in temperature increases the rate of solubility of substances. In additional solubility depends on the molecular size of the solute such that when other factors are kept constant then a solute with small particles will dissolve more faster. Therefore, to increase the rate of solubility Ryan may; increase  the temperature of water.

m=9

step-by-step explanation:

7m+8=71 subtract   8 from 71 which is 63 than divide it by 7m   equal 9.