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A gas expands against a constant external pressure of 0.9 bar until its volume has increased from 6.8 L to 10.4 L. During this process it absorbs 770.0 J of heat from the surroundings. Calculate the energy change of the gas.
Write the balanced molecular equation, the total ionic equation, and the net ionic equation
Lakes that have been acidified by acid rain (HNO3 and H2SO4) can be neutralized by a process called liming, in which limestone (CaCO3) is added to the acidified water. What mass of limestone (in Kg) would completely neutralize a 15.5 billion-liter..
Determine E° for the reduction half-reaction Ce4+(aq) + e- → Ce3+(aq), given that the cell voltage for the following voltaic cell is E°cell = 1.887 V:
Draw the appropriate titration curve for the tripeptide Met-Lys-Val, starting at pH 1 and ending at pH 12, On the curve label the pKas and the pI
At a certain temperature and pressure 4.2 L of N2 reacts with 6.3 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced?
a colorless liquid that is commonly known as grain alcohol, is 0.789 g/mL. Calculate the mass of 17.4 mL of the liquid.
a sample of sodium reacts complete with 0.497kg of chlorine, forming 819g sodium chloride. what mass of sodium reacted?
The concentration of urea (MW=60.0g/mol) in a solution prepared by dissolving 16 g of urea in 39 g of H2O
Methyl red (Ka = 7.9 x 10^-6 is added to a buffered solution of unknown pH. Spectrophotometric measurements show the ratio of the basic to the acidic form of the indicator to be 2.57 to 1.000. Calculate the pH of the buffer solution.
What is the mass of sugar in 735g of a 19.85% sugar solution?
How many moles of phosphine (PH3) are produced for every 4.0 moles of hydrogen that react according to the chemical equation below?.
if 860 liters of neon at 45°C and 800 mm. are decreased to 700 liters at the same pressure, what is the new temperature of this gas?
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