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What is the molarity of a solution containing 33.5 g of NaCl dissolved in 500. mL of water?
What is the molarity of a solution containing 33.5 g of NaCl dissolved in 500. mL of water?
Equilibrium constant for the reaction H2 + I2 2HI are 50.62 and 41.00 at 443 and 500 oC respectively Calculate change in free energy and eat of solution.
The norma boiling point of water is 100oC under what pressure will water boil at 102 oC ? The heat of vaporization of water is 2259jg-1
Express the concentration of solution in % w/v containing 12 g sodium chloride
and 50 ml of water.
A sample of oxygen gas occupies a volume of 250 mL at 750 torr pressure. What volume will it occupy at 900 torr pressure?
Given the reaction CH4 + 2O2→CO2 + 2H2O, what amount of O2 is needed to completely react with 14.0 moles CH4?
Using the integrated form of the rate law, determine the rate constant k of a zero-order reaction if the initial
concentration of substance A is 1.5 M and after 120 seconds the concentration of substance A is 0.75 M. what is the
half-life of substance A if its original concentration is 1.2 M?
A 3.0-L bulb containing He at 145 mm Hg is connected by a valve to a 2.0-L bulb containing Ar at 355 mm Hg (see figure below). Calculate the partial pressure of each gas and the total pressure after the valve between the flasks is opened. [PHe = 87 mm Hg; PAr = 140 mm Hg]
An organic compound contains carbon(71,17%),hydrogen(5.12%) with the remainder nitrogen.Dissolving 0.177 g of the compound in 10 g of benzene gives a solution with a vapour pressure of 94.16 mmHg at 25°C .(The vapor pressure of pure benzene at this temperature is 95.26 mmHg.)What is the molecular formula for the compound?
