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Problem- After 54.0 min, 10.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics?Can someone explain how to do this I keep getting it wrong? Thanks!
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1. a fixed amount of gas at 20 degrees celsius occupies a volume of12.0l under pressure of 650 torr. calculate its
Assuming the solution has a heat capacity of 4.18 J/°Cg and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol."
A stock solution is prepared by adding 20 mL of 1.21 M AlCl3 to enough water to make 72 mL. What is the Al3+ concentration of 30 mL of the stock solution
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1.000 gram of lead sulfate, PbS04(fw 303.2) is mixed with 1.000g of potassium chromate,k2cr04(FW 194.2) in 100ml of water. The reaction produce the percipitate lead chromate quantitatively, pbcr04(FW 323.2).
If 2.0 x 10^23 argon atoms strike 4.0 cm^2 of wall per second at a 90 degree angle to the wall moving with a speed of 450 m/s. what pressure (in atm) does the gas exert on the wall
strong/weak and concentrated/dilute. Provide an appropriate example using each of these terms to describe a solution
Suppose that 24 of each of the following substances is initially at 29.0. What is the final temperature of gold upon absorbing 2.30 of heat?
The solubility of silver sulfate, Ag2SO4, in water has been determined to be 8.0 g/L. What is the solubility in 0.24 M sodium sulfate, Na2SO4
The enthalpy of vaporization of Benzene is 33.9 kJ/mole at 298K. Explain how many liters of C6H6 (g), measured at 298 K and 95.1 mmHg, are formed when 1.54kJ of heat is absorbed by C6H6 (l) at a constant temperature of 298K.
The equilibrium constant (Kc) for the reaction shown below is 4.17 10-34 at 25°C. 2 HCl(g) reverse reaction arrow H2(g) + Cl2(g) What is the equilibrium constant for the following reaction at the same temperature. H2(g) + Cl2(g) reverse reaction a..
A copper cathode with an initial mass of 10.77 g is placed in a solution of CuSO4. After current has passed through the electrode for 15.0 minutes the cathode has a mass of 12.89 grams. Determine the amount charge (in Coulombs) that has passed thr..
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