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What are the signs of ?Hvap and ?Svap for water? Do you expect the signs of these quantities to be the same for other liquids? Explain.
A 0.5220g sample of an unknown monoprotic acid was titrated with 9.96*10^-2 M NaOH. The equivalence point of the titration occurs at 23.84mL.
The original sample is not pure, but is contaminated with a thermally stable compound. Will the reported mole ratio of CaO to CO2 be too high, too low, or unaffected? Explain
A balance is checked and found to be accurate and clean. After the lab, a spilled white solid is found on the balance. The only white substances available in the lab were barium chloride and sodium sulfate
Seawater contains approximately 3.5% NaCl by mass and has a density of 1.02g/ml. What volume of seawater contains 6.5g of sodium
how much heat energy is required to change 1.00*10^3 of ice at -30.0c to steam at 150c
calculate the mass percent, the mole fraction, and the partial pressure of CO2 in the container after cooling back down to the initial temperature.
The highly reactive OH radical (a species with an unpaired electron) is believed to be involved in some atmospheric processes. The bond enthalpy for the oxygen-to-hydrogen bond in OH as 460 kJ/mol. What is the longest wavelength (in nm) of radiati..
A mol of photons was measured to have an energy of 350kJ/mol. What is the wavelength of this radiation
If 3.0g of N2 gas has a volume of 0.50 L and a pressure of 5.0 atm, what is its Kelvin temperature
Calculate the density of hydrogen bromide gas (in g/L) at 733 mm Hg and 47 degrees Celsius
The bulb of the thermometer placed at the head of a distillation apparatus should be adjacent to the condenser. Explain the effects on the temperature recorded if the thermometer were placed (a) below the exit to the condenser and (b) above the ex..
calculate the mass of silver chloride required to plate 175 rm mg of pure
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