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The activation energy for the following reaction is 60. kJ/mol.Sn2+ + 2Co3+ → Sn4+ + 2Co2+
By what factor (how many times) will the rate constant increase when the temperature is raised from 10°C to 28°C?
How much heat is needed to raise the temperature of 81.0 g of water from 34 degrees celsius to 9.0x10^1 degrees celsius
Introduced into a 1.70 L flask is 0.120 mol of PCl5 ; the flask is held at a temperature of 227 C until equilibrium is established. PCl5(g) PCl3(g) + Cl2(g) What is the total pressure of the gases in the flask at this point
Adrenaline is the hormone that triggers the release of extra glucose molecules in times of stress or emergency. A solution of 0.79 g of adrenaline in 33.5 g
What is the concentration of the HNO3 solution? Your response differs from the correct answer by more than 10%. Double check your calculations. M (b) How many moles of NaOH were in excess after the first addition?
how do you write two half balanced equations for the following acidic solution MnO4^-(a)+Fe(s)--->Mn^2+(aq) +Fe^2+(aq)
dissolved .31 grams of KHP in 25 ml of water and it required 15.5ml of NaOH to reach end of titration, how many moles of KHP were originally present before the addition of the NaOH?
The standard molar enthalpy change for this reaction is -1.3MJ. What is the enthalpy change when 6 moles of octane are combusted?
Ocean water typically contains 35 moles of salt ions dissolved in each 1000 moles of water. Assuming that ocean water has the same density as pure water convert this ratio into a molarity and calculate the expected osmotic pressure of ocean water.
If 16.0 g of methanol are reacted with an excess of PBr3, how many grams of CH3Br would be formed if there is a 25.0% yield
The base peak in the mass spec of phenylacetic acid indicated that the compound lost a fragemnt that has an m/z= 17. This fragmentation corresponds to the loss of a(n)
What type of mineral source (sulfide, oxide, halide, phosphate, silicate, carbonate, etc) are the following elements typically isolated from? Write the chemical formula for the source mineral (for example: silver, typical mineral source = silver s..
what is the solubility of O2 at an elevation of 12,000 ft where the atmospheric pressure is 0.657 atm? Assume the temperature is 25°C, and that the mole fraction of O2 in air is 0.209 at both 12,000 ft and at sea level.
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