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If a gas occupies 22.2L at 825mmHg and 35 degree C, what pressure will it exert at 18.2L and -11 degree C?
A student used 22.0 mL of 0.1035 M NaOH to titrate 20 mL of orange juice. How many grams of citric acid were present in the sample? The molar mass of citric acid, H3C6H5O7, is 192.12 g/mol. H3C6H5O7(aq) + 3NaOH(aq) Na3C6H5O7(aq) + 3H2O(l)
What is the OH- in a solution that has a pH of 4.92? Give your answer to 3 significant figures using E-notation (i.e., 1 number before and 2 after the decimal point)
Suggest simple laboratory tests you could use to distinguish acetone, carbon tetrachloride, cyclohexane, ethyl ether and ethanol.
a)white the mathematical expression for the equilibrum constant,keq,as a function of the concentrations of the products and reactants for this reaction b)provide two specific ways whereby the le chatelier principle may be applied to this equilibri..
(a) Given that the molar mass of H3PO4 is 97.994 grams, determine the number of grams of H3PO4 needed to prepare 0.35L of a 1.25M H3PO4 solution. (b) What volume, in Liters, of a 1.25 M H3PO4 solution can be prepared by diluting 50 mL of a 4.5M H3..
A weak acid, HA, has a Ka value of 3.86 x 10-9. What is the Kb of A-. Use E notation and 3 significant figures.
If a piece of rock that has a volume of 0.73 L and a mass of 1524 g, what is the density of the rock in g/mL?
In a gas mixture, the partial pressures are nitrogen 0.559 ATM, oxygen 115 torr, and helium 0.296 mm Hg. What is the total pressure (in torr) exerted by the gas mixture
Draw a formula for the lowest molecular weight compound that contains C, H, and possibly O, is a chiral compound, contains ONLY one functional group,
The molar enthalpy of fusion of ice at 0 Celcius is 6.02 kJ/mol; the molar heat capacity of supercooled water is 75.3 J/(mol-K). (a) One mole of supercooled water at -10 Celcius is induced to crystallize in a heat-insulated vessel.
Titration of an oxalate sample gave the following percentages of percent oxalate: 12.28%, 12.54%, and 12.24%. Calculate the average and the standard deviation
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.110 M HClO(aq) with 0.110 M KOH(aq).
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