mass of kbr which should use to make 300ml of a 1.50m solution of kbr is calculated as follows
step one calculate the number moles of Kbr that is (1.50 x 300) /1000=0.45 moles mass= molar mass x moles 119 g/mol ( molar mass of Kbr) x 0.45 moles= 53.55g
