How much heat was transferred and in which direction
If the internal energy of a thermodynamic system is increased by 300. J while 75 J of expansion work is done, how much heat was transferred and in which direction, to or from the system?
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How many grams of water can be produced from the combination of 25 grams of hydrogen and 225 grams of oxygen? How much of which element will be left over?
If a homeowner maintains their house at 68F, what outside temperature would be competitive with an oil furnace that recovered 80 percent of the heating value of the fuel?
How many times larger will the equilibrium constant be for the G +C yields G:C reaction over the A + T yields A:T reaction.
127.7g of NaCll completely dissolves (producing Na+ and Cl- ions) in 1.00kg of water at 2.0 degree celcius. the vapor pressure of pure water at this emperature is 23.8 torr. Determine the vapor pressure of the solution.
Write this net ionic equation as a molecular equation, showing allreactants and products as compounds. Then rewrite this samenet ionic equation as a total ionic equation showing all cationsand anions written separately.
An isotope of the element Thallium, Tl-206, undergoes beta decay with a half life of 3.1 minutes. Assume you begin with 1.0 grams of the thallium isotope, what mass of the isotope will be left after 9.3 minutes have elapsed?
An unknown amount of compound W is composed of 42g of Hg,1.26x10^23 atoms of Cl and 0.63 mol of O. It's molecular weight is567 g/mol what are the empirical and molecular formulas of W?
In testing a relative stabilities of Cu (II) species using a well plate, a student adds 6 drops of 1 M of NH3 to 6 drops of 0.1 M of Cu(NO3)2. He observes that a blue precipitate initially forms, but that in excess NH3 the precipitate dissolves an
A 60 liter tank containing an ideal gas at a pressure of 40 atmospheres is connected by a valve to a 30 liter tank of an ideal gas at 70 atmospheres. The valve is opened slowly and the gases in the two tanks mix.
The solubilities of cholesterol in water and chloroform are0.250 mg/100mL and 1.00 g/4.5mL, respectively. Estimate thepartition coefficient of cholesterol between chloroform and water.
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