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A vessel contains 0.90 g liq H2O in equilibrium with water vapor at 30C. At this temperature, the vapor pressure of H2O is 31.82 torr. What volume increase is necessary for all the water to evaporate?
Consider the reaction CaCN2 + 3H2O ->CaCO3 + 2NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
What mass of Fe(OH)3 would be produced by reacting 75.0mL of a 0.0810M Fe(NO3)3 solution with 125 mL of a .150 M NaOH solution.
A 1.00 g sample of an unknown gas occupies 418 mL at 23.0 oC and 715 torr. Calculate the density at 23.0 oC and the molar mass of the gas.
Several rate constants were measured for a particular reaction at several temperatures. It was found that k = 0.0173 at 923 K, and k = 0.00919 at 773 K. What is the activation energy, Ea , for this reaction?
The vapor pressure of ethanol is 100 mmHg at 34.9oC. Its molar heat of vaporization is 39.3 kJ/mol. What is the vapor pressure of ethanol in mmHg at 57.5 oC?
what are the h3o and oh- concentrarions in a 125 ml solution prepared with 0.100 mol pf naoh and
CO2 has a mol wt of 44 Da. 5.0 micro liters of CO2 is added to 525 mL of air. The pm of CO2 by volume and weight is/are?
A chemist has synthesized two new dyes based on the molecular structure of plant-based dye
silver chlorideagcl often used in silver plating contains 75.27 of silver. compute the mass of agcl essential to plate
An organic compound has a molecular weight of 176.12 amu and was found to contain only three elements, C, H and O. When a 1.0000 g sample was completely combusted in air
the molality of a solution is the number of moles of the solute that is dissolved in 1000 g of solvent. using the
thirty pounds of methane are held in a sealed container at 100 degrees F. The volume of the container is two cu ft. Calculate the volume of gas in the container.
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