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Another Reaction, A -> Products, is a first order reaction. An experiment was performed at 25C which determined the rate constant is 0.015min^-1. THe activation energy of this reaction is +34.8kJ/mol. Calculate the temperature, in C, of the reaction where the half-life is 10.0 minutes.
Calculate the amount of energy needed in calories to heat 145 g of water from 22.3 degrees celsius to 75.0 degrees celsius. (water in j/g degree celsius = 4.184, cal/ g degree celsius = 1)
A solution that contains 87.2g of an unknown compound in 392.4g of water freezes at -8.00 degrees C. Calculate the molar mass(in units of g/mol) of the solute. Kf of water is 1.86 degrees C/m.
calculate change of pH value when we add 100mL of 0,4M HCl to 100mL of 0,4M NH3. K(NH3)
The products of our reaction (1- and 2-heptene) can form peroxides upon standing in air for a prolonged period of time
What is the equilibrium expression for the following reaction. Please interpret as an equilibrium symbol.
At constant pressure, in which of the reactions is work done by the system on the surroundings? By the surroundings on the system? In which of them is no work done?
a gas mixture contains 5.6 g of N2, 1.4g of h2, and 27.6 of CH4. What is the mole fraction of h2 in the mixture
The concentration of carbon monoxide in an apartment is 62 micrograms/m^3. How many grams of carbon monoxide are present in a room measuring 10 x 12 x 7.5 feet? Use correct number of sig figs.
Glycolic acid, which is a monoprotic acid and a constituent in sugar cane, has a pKa of 3.9. A 25.0 mL solution of glycolic acid is titrated to the stoichiometric point with 35.8 mL of 0.020 M sodium hydroxide solution. What is the pH of the resul..
The peak load delivered by the battery will be just under 2kW. The facility will be assembled from ion-exchange-membrane cells, in which the membranes are sheets of a tough, undisclosed plastic.
write out the balanced net ionic equation for the reaction of hydrochloric acid
Light travels extremely rapidly (c = 3.00×108 ). Suppose you had to travel 20 miles to work every day. If you traveled at the speed of light for the entire trip, how long would it take you to get to work (in seconds)? [1 mile = 1.61]
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