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How much heat is evolved when 239 g of ammonia gas condenses to a liquid at its boiling point?
Is heat absorbed or evolved in the course of this reaction? Calculate the amount of heat transferred when 45.0 g of CH3OH (g) is decomposed by this reaction at constant pressure.
What mass of methane, CH4, is contained in a 500.-mL sample of CH4 at STP?
the pressure on a 625 ml sample of gas is changed from .925 atm to 1.45 atm. what is the new sample of gas?
what mass of limestone is required to remove all the sulfur dioxide formed by the combustion of 9.2 X 10^4 kg of coal that is 0.33 mass % sulfur?
A Power plant is the main point source of SO2 emissions for a 25 km2 area. Estimate the steady-state concentration of SO2 for this area from this point source given the following temperature data. Windspeed= 5km/hr.
Given stock solutions of glucose (1M), asparagine (100 mM), and NaH2PO4 (50 mM), how much of each solution would you need to prepare 500 mL
Determine what is the mass percent yield from 2.57 grams of Sb in excess Sulphur , if 1.56 g of Sb 2 S 3 is obtained?
What mass of this substance must evaporate in order to freeze 150g of water initially at 15C? (The heat of fusion of water is 334J/g the specific heat of water is 4.18J/g*K.)
To the alchemists, gold was the material representation of purity. It is a very soft metal that can be hammered into extremely thin sheets. If a 1.07 g piece of gold is hammered into a sheet whose area is 30.0 ft2,
If this energy were used to vaporize water at 100.0 degrees, how much water (in liters) could be vaporized.
The solubility of O2 (g), in water at 25°C is 3.16 mL/100 g H2O when the gas pressure is maintained at 1 atm. What pressure of O2 (g) would be required to produce a saturated solution containing 10.9 mL/100 g H2O?
How many grams of precipitate will form from 100mL solution that is both 0.90 M in Na2S and 0.20 M in PbCl2?
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