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The temperature of a lead fishing weight rises from 15 oC to 45 oC as it absorbs 22.5 kJ of heat. What is the mass of the fishing weight in grams? Heat capacity of lead is 0.128 J/g oC.
A 10g sample of acetic acid HC2H3O2. was burned in a bomb calorimeter in an excess of oxygen. The temperature of the calorimeter rose from 25 C to 35.84C. If the heat capacity of the calorimeter and its contents is 13.43KJ/C, what is the enthalpy ..
What is the boiling point of a solution made by adding 6.79 g of magnesium chloride to 242.0 g of water?
The half-life of a reaction, is the time it takes for the reactant concentration to decrease by half. For example, after one half-life the concentration falls from the initial concentration to, after a second half-life to, after a third half-life ..
A sample of helium gas has a volume of 241 mL at 0.83 atm. What pressure is needed to reduce the volume at constant temperature to 35 mL.
pH = log[H3O+] , pH + pOH = 14, [H3O+] * [OH-] = 1.0 X 10^-14, pH = -log(0.001) = 3 Could you show me a few of the steps between line one and two in both of these conclusions?
what is the mass in grams of solid sulfur,S8 required to produce 25.50g of Cu2S(s) according to the balanced equation.
Consider the base monosodium phosphate and Write the structure of the conjugate acid of this base- ineffective for extracting C7H6O2 from a diethyl ether solution.
A 1.80-L flask is filled with propane gas (C3H8), at 1.00 atm and -19.4°C. What is the mass of the propane in the flask.
If 156 mL of wet H2 is collected over water at 24C and a barometric pressure of 736 torr, how many grams of Zn have been consumed?
The atomic weight of a newly discovered element is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu.
how many whole drops (.05 mL/drop) of 6 M HCl are required to dissolve the calcium carbonate? b) What is the Ca concentration when this is dissolved and diluted to 100.00mL
Calculate the entropy change for vaporization of 18 g of H2O. The molar enthalpy of vaporization for water is 44 kJ/mol and the boiling point
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