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A student pipets 35mL of 0.0919M HCl solution in flask; how many mL 0.0919M NaOH will be required to neutralize the HCl solution?
what is the density of a block of marble that occupies 253 cm3 and has a mass of 752
If the age of the Earth is 4.5 billion years and the half-life of 40K is 1.26 billion years, what percent of the Earth's original amount of 40K remains today
Determine the empirical formula of a compound containing 77.3% silver, 7.4% phosphorus and 15.3% oxygen.
What is the pH of a one liter mixture of .15 M nitrous acid and .20 M sodium nitrite after .020 mol of HCl have been added (no change in volume). (Ka for nitrous acid is 4.0x10^-4.
What is so good about supercritical CO2? Wouldnt its widespread use contribute to climate change?
a gas is placed in a storage tank a pressure of 30.0 atm 20.3oc as a safety device there is a small metal plug in the
If 8.60 g of NaHCO3(s) are combined with 32.2 mL of 0.800 M H2SO4, how many moles of CO2(g) would be produced if reaction occurred as completely as possible. Calculate the number of moles of both reactants first and then identify limiting reactant..
A solution of 2.00 g of para-dichlorobenzene (a clothes moth repellant) in 50.0 g of cyclohexane freezes at 1.05 C. What is the molar mass of
The temperature of the calorimeter increased from 24.5oC to 26.7oC. If the heat capacity of the calorimeter is 4.46 kJ (oC)-1, then what is the constant volume heat of combustion of this compound, in kilojoules per mole? (Remember to include a "+"..
The solubility constant of TlBr is Ksp = 3.6 × 10^-6 and the solubility constant of AgBr is Ksp = 5.0 × 10^-13. Determine the range of NaBr volumes over which each solid precipitates.
the initial volume of a sample of argon gas is 938 ml at 178degc. if the pressure is held constant and the volume is
Based on the two balanced reaction equations, find the ?G for the complete oxidation of one ethanol to two CO2 molecules.
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