How many grams of water would it take to quench 1 g of phenylmagnesium bromide?

Answer 1

Write the equation and balance it.
phMgBr + HOH ==>

Convert 1 g phMgBr to moles. moles = grams/ molar mass.

Using the coefficients in the balanced equation, convert moles phMgBr to moles water.

Now convert moles water to grams. grams = mols water x molar mass water.

Answer 2

.099 grams