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When 1.0 g of gasoline burns it releases 11 kcal of heat. The density of gasoline is 0.74 g/mL. How many megajoules are released when 9.0 gal of gasoline burns? Express your answer to two significant figures.
Calculate the change in pH that occurs in each of the the solutions listed below as a result of a tenfold dilution with water. Round calculated values for pH to three figures to the right of the decimal point. (b) 0.0500 M HCL (d) 0.0500 M
A sample of helium gas occupies 945mL at 605 mmHg. For a gas sample at a constant temperature, determine the volume of helium at 745 mmHg?
The activation energy of a certain reaction is 77.3 kj/mol. How many times faster will the reaction occur at 41 degrees celcius than at 0 degrees celcius?
a quanity of gas exerts a pressure of 98.6 kpa at a tempature of 22 degrees celcius. If the volume remains unchanged, what pressure will it exert at -8 degrees celcius
Define if we assume that the voltage declines linearly as current are withdrawn, educated guess the total maximum electrical work the battery could carry out during discharge
What is the cellular free energy change for the phosphofructokinase reaction at 37°C? c) What is the equilibrium constant for the phosphofructokinase reaction
Explain how much would a liter of water primarily at 20 degrees C, be cooled by the addition of 10 cubes of steel, each 2.5 cm on a side originally at -10 degrees C We know that while ice melt its temperature stays fixed at 0 degrees C while absor..
at 25degc hydrogen iodide breaks down very slowly to hydrogen and iodine ratekhi2. the rate constant at 25degc is 2.4
Estimate the average area of a cell in square micrometers, and the diameter of a single cell in micrometers, using the data below. Assume the cells are roughly spherical. What is the average cell surface area
Question- Suppose you add 18 drops of 0.1 M HCl to 19 drops of 0.1 M NaOH. Phenolphthalein has been added to the HCl. What color do you suspect the resulting solution will be. Why
A gas sample is connected to a closed end manometer. the difference in mercury levels in the two arms is 115mm. what is the gas pressure in torr if the atmospheric pressure is 750 torr
Calculate the amount of heat transferred when 45.0 g of CH3OH(g) is decomposed by this reaction at constant pressure.
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