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if 1.67l of oxygen reacts with hydrogen gas to produce liquid water how manny liters of hydrogen gas will be needed.
How many molecules of carbon dioxide are produced when 129 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
What is the value of Kc for the decomposi- tion of ammonium carbamate into ammonia and carbon dioxide?
Determine which H atom transition (ninitial,nfinal) was responsible for the emission of a photon with a frequency of 6.91 x 1014 Hz.
What is the volume occupied by 0.265mol of helium gas at a pressure of 1.28atm and a temperature of 307K
A 325-mL sample of solution contains 25.3 g of CaCl2, which is fully dissolved. Calculate the molar concentration of Cl- in this solution.
determine the theoretical yield and the percent yield of ethanol if 684 g of sucrose undergoes fermentation and 349 g of ethanol is obtained
Calculate the enthalpy of the reaction: 2NO(g) + O2(g) --> 2NO2(g) given the following reactions and enthalpies of formation:
What mass of carbon dioxide is present in 1.00m^3 of dry air at a temperature of 25c and a pressure of 731torr? Calculate the mass percentage of oxygen in dry air.
A gas held at 798 mmHg in a 400 mL flask is released into a 3 L flask.Whats the new gas pressure?
Water (2290g ) is heated until it just begins to boil. If the water absorbs 4.99×10^5J of heat in the process, what was the initial temperature of the water.
A gas sample containing 1.64 mol at 25°C exerts a pressure of 389 torr. Some gas is added to the same container, and the temperature is increased to 50.°C.
Using a sample of 30.0 mL of Kr(g), is at 25°C and 756 mmHg. Calculate the new volume if the temperature is decreased to -125°C and pressure is decreased to 325 mmHg .
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