Step-by-step explanation:
To calculate the molarity of a solution, we need to know the number of moles of solute (in this case, KCl) and the volume of the solution in liters.
First, we need to calculate the number of moles of KCl. We can do this by using the formula: moles of KCl = (mass of KCl in grams) / (molar mass of KCl in grams/mole)
The molar mass of KCl is 74.5513 g/mol, so we can use this to calculate the number of moles of KCl in the solution:
moles of KCl = (0.93 g) / (74.5513 g/mol) = 0.01239 moles
Next, we can use this number of moles to calculate the molarity of the solution. Molarity is defined as moles of solute per liter of solution, so we can use the following formula to calculate the molarity of the solution:
molarity of solution = (moles of KCl) / (volume of solution in liters)
In this case, the volume of the solution is 0.75 L, so we can substitute these values into the formula:
molarity of solution = (0.01239 moles) / (0.75 L) = 0.0165 moles/L or approximately 0.0165 M