Calculate the volume in liters of a 0.887 g/L calcium sulfate solution that contains 225. mg of calcium sulfate

Is this a single replacement reaction or there is no

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?