to find the molarity of an aqueous solution of an ionic solid what do you need to know?

a... mass of solid, formula of solid, volume of water
b...moles of solid, formula of solid, volume of water
c....mass of solid, formula of solid, volume of solution
d....moles of solid, formla of solid, volume of solid

You MUST have moles/L.

To obtain moles, you must know grams/molar mass.
c looks good to me. DON'T be fooled into taking a or b. Volume of water and volume of the solution are not the same.

To find the molarity of an aqueous solution of an ionic solid, you need to know the moles of solid, the formula of the solid, and the volume of water.

The correct option would be (b) moles of solid, formula of solid, volume of water.

Here's how you can calculate the molarity of the solution using this information:

1. Determine the moles of the ionic solid: This can be done by dividing the mass of the solid by its molar mass. You need to know the formula of the solid to determine its molar mass.

2. Determine the volume of water: This can be measured using a graduated cylinder or any other suitable measuring device.

3. Calculate the molarity: Divide the moles of the solid by the volume of water in liters.

Molarity (M) = Moles of solid / Volume of water (in liters)

By following these steps and using the correct formula, you can find the molarity of the aqueous solution of an ionic solid.