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If a temperature increase from 11.0 C to 22.0 C doubles the rate constant for a reaction, what is the value of the activation barrier for the reaction?
A patient has 48 ml. of blood drawn and this volume of blood has a mass of 39.5 g. what is the specific gravity of the blood?
One of the nuclides in spent nuclear fuel is U-235 , an alpha emitter with a half-life of 703 million years. How long will take for the amount of U-235 to reach 49.0% of its initial amount
The concentration of Fe for the twice diluted sample is found to be about 1.875ppm. What is the concentration of Fe in the original sample of tap water
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. What is the rate of the reaction when [NO] = 0.125 M and [O2]=0.250 M
The electron in the n = 5 level of a hydrogen atom emits a photon with a wavelength of 1280 nm. To what energy level does the electron move?
calculate the amount of heat transfered when 24.0 g of CH3OH decompose at constant pressure. delta H is 126.4 kJ
what is the molarity of a solution of sodium hydroxide that contains 47.0 g of naoh in 205.0 ml of solution? use a
Calculate the pressure of 4 g of nitrogen gas in a 1 L container at 20.0 ?C.
hydrogen chloride gas is shipped in a container under 5.000 mm hg pressure that occupies 20 liters at 30 celcius how many liters of gas would be produced at stp?
An underground reservoir contains natural gas at a pressure of 425 kPa and a temperature of 15 °C. If the volume of the reservoir is 1.3 x 104 kL
Somebody puts an expandable balloon on the opening of the bottle, without any gas escaping. The outside pressure is 1.10atm and the temperature has decreased to 25.8 degree celsius. Calculate the new volume of the gas.
a ballon filled with 0.505 mol of gas contracts reversibly from 1.0 L to 0.10 L at a constant temperature of 5.0 degree celsius. In doing so it loses 1270 J of heat. calculate w, q, and U for the process.
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