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0.12 litre of an ideal monatomic gas (Cv = 3R/2) initially at 68 deg C and 2.7 atm pressure undergo an expansion against a constant external pressure of 1.17 atm, and do 1.2 kJ of work. The final pressure of the gas is 1.17 atm. Calculate the change in enthalpy, Delta H. Report your answer in Joules.
a 5.00L air sample at a temperature of -50 degrees celsius has a pressure of 107 kpa. what will be the new pressure if the temperature is raised to 102 degrees celsius and the volume expands to 7.00L.
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32 P, how many grams will remain after 112 days?
The pH of a bicarbonate-carbonic acid buffer is 6.95. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-)
What is the silver ion concentration in a solution prepared by mixing 357 mL of 0.392 M silver nitrate with 469 mL of 0.504 M sodium phosphate?
Explain how a change in the amount of a product causes a shift in equilibrium?
Would Br2 react faster with a tropylium cation or cyclooctatetrene? Not sure if the aromaticity of the cation comes into play here. Please justify your reasoning
An empty 2.0 L soda bottle is tightly capped at 25 degrees C and 732 mmHg. If the bottle is heated to 100 degrees C what is the pressure in the bottle
What volume of hydrochloric acid solution of 0.25 M must be diluted to prepare 1.00 L of 0.040 M HCl and calculate Keq at this temperature for the given reaction 2 NOCl (g) W 2 NO (g) + Cl 2 (g) ( reaction is at equilibrium):
Calculate the equilibrium constant, Ke, for the reaction assuming the concentrations for reactants and products are the following
Determine the empirical formula of estradiol. The molecular weight of estradiol was later determined to be 272. Determine the molecular formula of estradiol.
How many grams of water can be cooled from 45 C to 23 C by the evaporation of 63 of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g . The specific heat of water is 4.18 J/g*K .)
Mg3N2(s) + 3 H2O(l)= 3 MgO(s) + 2 NH3(g) How many moles of Magnesium oxide are produced by the reaction of 3.82g of Magnesium nitride with 7.73g of water?
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