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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When 50.0 grams of silicon dioxide is heated with an excess of carbon, 32.2 grams carbonide along with carbon monoxide. what is the percent yield of silicon dioxide?
A family heats their house with propane gas. The gas company reports that for an average home it takes 26.970 kJ of heat to raise the temperature of the air inside the house from 61.0oF to 70.0 oF.
How do you calculate the concentration of oxalic acid and potassium permanganate for each run when you are given the stock concentration of each compound and the amount of Liters in each run.
When we perform the silver nitrate test.which five anions will combine with silver ion to form in soluble precipitates? how will recognize this when it happens?
On a smoggy day in a certain city the ozone concentration was0.34 ppm by volume. Calculate the partial pressure (atm) of ozone and the number of ozone molecules per literof air if the temperature and pressure were 20.0°C and758 mmHg, respectiv
Calculate the pH of a buffer prepared by mixing 50.0 mL of 1.00 M ammonia and 50.0 mL of 1.00 M ammonium nitrate (Remember to take dilution into account)
Gold forms a substitutional solid solution with silver. Compute the weight percent of gold that must be added to silver to yield an alloy that contains 5.5 × 1021 Au atoms per cubic centimeter.
A solution containing ethylene glycol and water has a vapor pressure of 7.88 torr at 10C. Pure water has a vapor presssure of 9.21 torr at 10C. What is the mole fraction of ethylene glycol in the solution?
Molybdenum forms a substitutional solid solution with tungsten. Calculate the concentration (in weight percent) of molybdenum that must be added to tungsten to yield an alloy that contains 1.16 x 1022 Mo atoms per cubic centimeter.
The equilibrium constant for the hydrolysis of the dipeptide alanylglycine by a peptidase enzyme is K = 8.1 x 102 at 310 K. Calculate the standard reaction Gibbs energy for the hydrolysis.
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