Copper(ii) bromide is used as a wood preservative. what mass of cubr2 is needed to prepare 750.0 ml of a 1.25 m solution?

238.2 g of CuBr₂  is the mass needed

Explanation:

To work with molarity and volume, we can find the mass of solute as this

Molarity . volume (L) = moles →  moles . molar mass = mass

1.25 mol/L . 0.750L = moles

0.9375 moles

0.9375 mol . 223.35 g/mol = 238.2 g of salt

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

wher is the rest of the question