Question #f6853

1 Answer
Oct 29, 2016

Molar mass of #MgSO_4=24+32+4*16=120" g/mol"#

#7.5xx10^2mLor 0.75L" "0.000450M" " MgSO_4# solution contains #0.75xx4.5xx10^-4 mol " " MgSO_4#

#= 3.375xx10^-4 molxx120g/"mol"=4.05xx10^-2g " "MgSO_4#

#=40.5mg " "MgSO_4#

So #4.05mg " "MgSO_4# is to be taken taken in a 750mL volumetric flask and after dissolving it in water volume is made up to 750mL by adding water.