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When 5.00 × 1022 molecules of ammonia react with 4.00 × 1022 molecules of oxygen, how many grams of nitrogen gas are produced? 4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(g)
A gas occupying 28 mL at standard conditions is heated to 13?C while the pressure is reduced to 0.84119 atm. What is the new volume occupied by the gas.
How much heat (in kJ ) is required to warm 12.0 grams of ice, initially at -12.0 Celsius, to steam at 112.0 Celsius? The heat capacity of ice is 2.09 J/g*Celsius and that of steam is 2.01 J/g*Celsius?
If 20.0 dm3 of methane, CH4, react with 200.0 dm3 of air at STP, calculate the dm3 of carbon dioxide gas produced.
A pound of coffee beans yields 48 cups of coffee. How many milliliters of coffee can be obtained from 1 g of coffee beans?
Empirical and Molecular Formula of Adrenaline, Adrenaline contains 59% C, 7.1% H, 26.2% O and 7.7% N and has a molar mass of about 180 g/mol.
How many molecules of water are produced when 143 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
If it takes 30.0 mL of 0.0250 M K2Cr2O7 to titrate 15.0 mL of a solution containing Fe2+, what is the molar concentration of Fe2+?
If 13.0g of CCl3F is enclosed in a 1.2-L container, what mass of liquid will be present, when the vapor pressure of CCl3F at 300K is 856 torr?
Calculate How many grams of H2O at temperature 25 degree Celsius should be poored on the ice with no water in flask initially.
Octane has a density of 0.692g/mL at 20 ^ C. How many grams of O2 are required to burn 1.10gal of C8H18.
A 12.0g sample of a gas has a volume of 5.25L at 29 degrees celcius and 764mmhg . If 2.7g of the same gas is added to this constant 5.25L volume and the temperature raised to 67 degrees celcius.
Following a terrorist release of Cesium-137 (half-life of 30 years) in downtown, clean up efforts were successful in removing all but 100 curies. How long will it take for the contamination to decay to about 5 curies?
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