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 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 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 mass of a non-volatile solute, urea (NH_2CONH_2) need to be dissolved in 100 g of water in order to decrease the vapour pressure of water by 25%? What is the molality of the solution?