In unknown volume of 40% w/w solutions of h2so4 of density 1.4g/ml is diluted until it`s density becomes 1.05per ml . calculate %w/w& %w/v

Total number of structural isomers of 
[Co(NH₃)₆][Cr(CN)₆]

Why is boiling point of Cesium higher than that of Rubidium

 

which isomer mentioned in (a) is water soluble and why?

A gaseous mixture contains CO2 and CO the mass of the mixture is 200g and they are presenting equal fraction of moles . Find the total no. of O-atoms present in the mixture.