Chemistry Multiple Choice Questions, Please Help

In a concentration calculation, if we are given the solute measurement in grams, and the volume of solution in liters, what do we need to do first in order to find the molarity?
A. Find the mass of the solution.
B. Convert the liters of solution to milliliters.
C. Convert the grams of solute to moles of solute.
D. Convert the grams of solute to parts per million.


Rewrite the following chemical formula in dissociated form.
KI(aq)
A. K+ + I- ( I know it is not A)
B. K2+ + I2-
C. K+(aq) + I-(aq)
D. K2+(aq) + I2-(aq)


The pH of a solution can be calculated using which formula?

Thank you in advance for any help!

molarity = no.of moles of solute/volume in litres

so you have volume of solution in litres ......you just need to convert weight of solute to moles ....so answer is C

KI(aq) ------> K+ (aq) + I-(aq)

so answer is C