What weight of non`-` volatile solute,urea `(NH_(2)CONH_(2))` needs to be dissolved in `100g` of water, in order to decrease the vapour pressure of water by `25%`.

What weight of the non-volatile solute urea' (NH_(2)-CO-NH_(2)) needs to be dissolved in 100 g of water in order to decrease the vapour pressure of water by 25% ? What will be the molality of the solution?

What weight of non-volatile solute (urea) NH_(2) CO NH_(2) needs to be dissolved in 100 g of water in order to decrease the vapour pressure of water by 25% . What will be the molality of solution?

What weight of non-volatile solute (urea) NH_(2) CO NH_(2) needs to be dissolved in 100 g of water in order to decrease the vapour pressure of water by 25% . What will be the molality of solution?

What weight of non-volatile solute (urea) NH_(2) CO NH_(2) needs to be dissolved in 100 g of water in order to decrease the vapour pressure of water by 25% . What will be the molality of solution?

What weight of the non-volatile urea ( NH_2- CO - NH_2 ) needs to be dissolved in 100g of water in order to decrease the vapour pressure of water by 25%? What will be molality of the solution?

What weight of the non-volatile urea ( NH_2- CO - NH_2 ) needs to be dissolved in 100g of water in order to decrease the vapour pressure of water by 25%? What will be molality of the solution?