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Water expands when it freezes. how much work does 100. g of water do when it freezes at 0 degrees celcius and pushes back the metal wall of a pipe that exerts opposing pressure of 1070 atm? The density of water and ice at 0 degrees celcius are 1.00 g*cm^-1 and 0.92 g*am^-1, respectively.
What is the molality of a solution prepared by dissolving 10.0 grams of methylamine, CH3NH2, in 50.0 mL of ethanol, C2H5OH?
What is the pH of a solution that mixes 30mL of 0.01M CH3COOH with 30mL 0.0075M NaCH3CO2? (Assume the volumes are additive
a solution of na2co3 of 50ml was titrated with 65.8ml of 3.00m hydrochloric acid. determine what by weight of sodium
The solubility of barium carbonate,BaCO3, is .0100 g/L . Its molar mass is 197.6 . What is the Ksp of barium carbonate?
explain the main concept behind the VSEPR theory of molecular shape. how do both number and type of electron pairs influence the shape of a molecule?
delta H=483.6 kJ/mol If 2.0 moles of H2O(g) are converted to H2(g) and O2(g) against a pressure 1.0 atm at 145 degrees C, what is the delta E for this reaction?
Calculate the pH of a buffer solution made by adding 10.0 g of anhydrous sodium acetate (NaC2H3O2) to 100mL of 0.100 M acetic acid (HC2H3O2).
compare the pH of a .040 M HCl solution with that of a .040 M H2SO4 solution. (hint: H2SO4 is a strong acid; Ka for HSO4- = 1.3 X 10^-2)
Based on the procedure that you used in this experiment and using the same molar quantaties of reactants, develop a procedure that would be suitable for the preparation of isobutyl propionate.
The atomic mass in g mol of Fe=55.85, S=32.07 O=16, calculate the number of moles of the negative ions present in 7.45g of iron (III) sulfate.
How many moles of hydrogen gas would be needed to react with excess carbon dioxide
A solution containing 100 g of an unknown liquid and 900 g water has a freezing point of - 3.33 oC. What is the molar mass of the liquid? Kf = 1.86oC/m
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