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A weak monoprotic acid is titrated with NaOH, and the following data are recorded. Calculate the molar mass of the weak acid.original volume of acid solution = 50.00 mL mass of acid (a solid) = 0.3459 gVolume of NaOH titrant required: 34.72 mL concentration of NaOH = 0.09951 M
A 782 mL gas sample at STP is compressed to a volume of 131 mL, and the temperature is increased to 22?C. What is the new pressure of the gas in Pa?Answer in units of Pa.
An experiment requires 45.0 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
If 500ml of a solution containing 1.00g of barium nitrate (199.33 g/mol) is combined with 500 ml of a soluiton containing 1.00g of sodium sulfate
When 1.5173 of an organic iron compound containing C, H, O, and Fe was burned in O2, 2.838 g of CO2 and 0.8122 g of H2O were produced. In a separate experiment to determine the mass
Calculate the pH of the solution at the equivalence point. b) What volume of 0.05 M HCl solution should be added to the sodium glutamate solution to yield a pH of 4.5?
A tank is being filled through a valve by an ideal gas where the following applies: H=30*T(K) in J/mol for gas, R=8.314 in J/mol/K, H=40 T(K) for the liquid in J/mol (gas as liquid, different reference point than gas)
A particular coal contains 2.92% sulfur by mass. When this coal is burned, the sulfur is converted into sulfur dioxide gas. The sulfur dioxide gas then reacts with calcium oxide to form solid calcium sulfite
The maximum temperature attainable in the crucible on strong heating with a Bunsen burner is approximately 800°C. Can the magnesium evaporate under the conditions of this experiment? Why or why not?
A gas sample has an original volume of 680 ml when collected at 720 mm and 28°C. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55°C?
One of the emission spectral lines for Be3+ has a wavelength of 253.4 nm for an electronic transmission that begins in the state with n = 5
The equation for the complete combustion of acetylene, C2H2. You do not need to include any phase symbols or energy changes.
How much heat must be absorbed by the six pack to lower its temperature from 25.0C to 5.0C?
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