What would be the boiling point of a 3.5m solution of Na2SO4in water (assume 100% dissociation, Kb (H2O) = 0.52 degrees C/m)?

A balloon has maximum capacity of 20 L. At one atm pressure, 10 L of air is filled in the balloon. What would be the pressure (assuming isothermal condition) when it will burst?

For which process change in internal energy and enthalpy is zero?

Explain how you could determine the approximate number of grapes in a bag of grapes from a store without counting all of the grapes?

Adding vinegar (CH3COOH) to baking soda (NaHCO3) produces carbon dioxide gas and the reaction vessel becomes cold. What can you determine about this reaction from these observations?

The root mean square velocity of one mole of a monoatomic gas having molar mass M is Urms. Then what will be the relation between the average kinetic energy (E) of the gas and Urms is?

If 44.8 mL of a solution containing 8.25 g of silver nitrate is added to 30.6 mL of 0.518 M sodium carbonate solution, what would be the molarity of silver ion in the resulting solution?

What will be the energy emitted when electrons of 1.0g atom of hydrogen transition giving the spectral line of lowest energy in the visible region of it's atomic spectrum?

The rate of reaction between two reactants A and B decreases by a factor of 4, if the concentration of reactant B is doubled. What will be the order of this reaction with respect to reactant B?

What will be the hybridization of the oxygen atom in water?

The heat of combustion for 1 mole of carbon to carbon dioxide is -410 kJ. How many kJ of heat would be liberated from the complete combustion of 60.0 g of carbon?

What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen and 48.68% fluorine if the molar mass of this compound is 156.12 g?