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Problem- Liquid sodium is being considered as an engine coolant. How many grams liquid sodium (minimum) are needed to absorb 9.20 MJ of energy (in form of heat) if the temperature of the sodium is not to increase by more than 10.0'C? Use Cp = 30.7 J/(K x mol) for Na(l) at 500 K.
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Explain how did your values for the mean heats of neutralization compare for the two acid-base reactions. Explain why would you expect the heats of neutralization for these reactions to be the same, within experimental error. Define what is the ne..
One mole of potassium dichromate completely oxidises the following number of moles of ferrous sulphate in acidic medium
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air. (a) If the partial pressures of CO2 and H2O in exhaled air ar..
If, in a certain experiment, over a specific time period, 0.0055 mol PH3 is consumed in a 2.3 L container during each second of reaction,
We know that 100 cm3 of the mixture measured at 25C as well as 750 mm yields 84.5 cm3 of dry oxygen measured at 25C and 750mm after passage over CuO as well as the drying agent. Explain what is the original composition of the mixture. State balanc..
an unknown compound contains only carbon hydrogen and oxygen cxhyoz. combustion of 6.00g of this compound produced
how many grams of ammonium nirtate must have reacted if 3.75dm3 of nitrogen gas was collected over water at 26C and 97.8 kPa
Explain when solutions of silver nitrate and sodium chloride are mixed, silver chloride precipitates out of solution according to the equation AgNO3(aq)+NaCl(aq)AgCl(s)+NaNO3(aq) explain what mass of silver chloride can be produced from 1.00L of a ..
three solutions are mixed together to form a single solution. one contains 0.2 mol pbch3coo2 the second contains 0.1
You are testing some novel fuel mixtures for potential use in automobiles. Your testing apparatus is a 2.54-cm inner diameter cylinder fitted with a piston, designed to mimic a cylinder found in a car engine.
The standard enthalpy change in the combustion of the hydrocarbon octane is delta H=-5.48*10^3KJ/Mol C8H18. How much heat, in kilojoules, is liberated per gallon of octane burned? Density of octane = 0.703 g/mL 1 Gal=3.785 L
If a sample containing 3.00 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
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