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Final temperature after urea dissolves in water
Urea, (NH2)2 (CO), is used in the manufacture of resins and glues. When 5.00 g of urea is dissolved in 250.0 mL of water (d=1.00 g/mL) at 30.0°C, 27.6 kJ of heat is absorbed. What is the final temperature of the solution in kJ? The density of water is 4.18 J/g·°C. What is the final temperature in °F? F = °C x 1.8 + 32 (Round your answer to one decimal place)
A vinegar sample contained 5.20 % acetic acid. How may mL of 0.450 N sodium hydroxide would be required to titrate 25.00 mL of the vinegar sample
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Predict the order for increasing binding energies of the C(1s) electron for the following compounds giving your reasoning.
When 9.00 grams of Al react with an excess of H3PO4, 30.0 grams of ALPO4 are produced.What is the percentage yeild of this reaction.
if a sample of gas at 25.2 C has a volume of 536 mL at 637 torr, what will its volume be if the pressure is increased to 712 torr.
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An unknown gas is found to effuse at a rate that is 1.864 times faster than Br2 at the same temperature. What is the identity of the gas.
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The pH of a sample of rain is found to be 4.0. Calculate the percentage of HSO4- that is ionized in this sample, given that the acid dissociation constant for the second stage of ionization of H2SO4 is 1.2E-2.
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