Calculate the work in units of kj for the gas expansion
A sample of an ideal gas at 15.0 atm and 10.0 L is allowed to expand against a constant external pressure of 2.00 atm at a constant temperature. Calculate the work in units of kJ for the gas expansion.
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For NH4Br dissolving in water, ΔHsoln is17kJ/mol. Write an equation that represents the solubility equilibrium for NH4Br dissolving in water. Include heat in the equation.
A gas cylinder filled with nitrogen at standard temperature andpressure has a mass of 37.289g. The same container filled withCO2 at STP has a mass of 37.440g. When filled withan unknown gas at STP, the container mass is 37.062g.
The π electrons in benzene can be approximated as particles ona ring. Calculate the diameter of this "electron ring" if it is assumed that a transitionoccurring at 260.0 nm corresponds to an electron going from n = 3 to n = 4.
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The working substance of an engine is 1.00 mol of a diatomic ideal gas. Heating at constant volume to its original pressure. Find the efficiency of this cycle.
Hydrogen peroxide solutions are purchased from chemical suppliers at a 3.0% by mass concentration. Calculate the molar concentration of a 3.0% H2O2 solution, assuming a density of 1.0 g/mL.
How many mL of 010 M NaOH should the student add to20 mL 0.10 M HFor if she wished to prepare a buffer with a pH of3.4, the same as in Problem 4?
Given the values below, discuss the interaction of the enzyme with both of these substrates and calculate the catalytic efficiency for hexokinase with each substrate if the concentration of hexokinase = 1.5uM.
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