An aqueous solution labelled 35.0% w/w HClO4 has a density of 1.251 g cm¯3. What is the molarity of the solution?

My answer is 0.436 (3dp). Can someone check this please. Thanks

2 answers

consider a liter of the solution. Its mass: 1.251kg. Mass of HClO4= .35 x 1251gram= 487grams
Moles= 487/105=4.64moles
Molarity=4.64
check my thinking,we are way off in agreement.
Thank you