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1.2 mole of a monoatomic ideal gas that occupies a volume of 13L at 248K spontaneously and isothermically expands until its voulme is doubled.Finddelta Hdelta pdelta T
Determine the osmotic pressure of a solution that is 0.200 M in glucose and 0.100 M in sodium chloride at 37.0 degrees celsius. Assume no ion pairing.
What is the energy, in J/photon, of electromagnetic radiation that has a frequency of 2.89 x 1015Hz ? Express your answer to 3 significant figures in scientific notation and do not include units.(4.45 x 10-3 can be represented in scientific notati..
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.30 g of sodium carbonate is mixed with one containing 4.71 of silver nitrate.
calculate the mass of a sample of gold that occupies 5.0 X 10^-3 cm3 if the density of gold is 19.3 g/cm
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC Delta T to calculate the temperature change of the 304 g of water.
The solubility product of PbBr2 is 8.9x10^-6. Determine the molar solubility a) in pure water, b) in 0.20M KBr solution, c) in 0.20M Pb(NO3)2 solution.
CH3OH burns in oxygen (O2) to from carbon dioxide (CO2) and water(H2O). Equal masses of ten grams of gaseous CH3OH and O2 are placed in an evacuated flask of five litres at the temperature of 25 degrees celsius.
how glycine buffers solutions at either pKa by consuming small amounts of added hydrogen or hydroxide ions
What is the % by mass of CaCl2.2H2O in the salt mixture B. how many grams of the excess reactant K2C2O4.H2O reacted in the mixture C. How many grams of the K2C2O4. H2O in the salt mixture remain unreacted
How many grams of iron will be electrodeposited by the passage of 3.20 ampere current through a 0.500 M Fe(NO3)3 solution for an hour and 30 minutes
Describe the titration curve for the titration of a weak base with a strong acid. Indicate the chemical reaction, the points that correspond to the equivalence point, the pH = pKa and the region with maximum buffering.
The following reaction is first order with respect to NO and first order with respect to O2, and the rate constant is 5.0 x 104 M-1s-1
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