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how many moles of CO2 are produced when 5.40 mol of ethane are burned in an excess of oxygen
A gas mixture being used to simulate the atmosphere of another planet consists of 324 mg of methane, 217 mg of argon, and 228 mg of nitrogen.
What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.00 mL of 0.10 M methylammonium chloride, CH3NH3Cl.
The initial concentration of the reactant A in a first-order reaction is 1.2M. After 69.3 s, the concentration has fallen to 0.3M. What is the rate constant k
calorimetry can be used to find heats of combustion. suppose a calorimeter helps someone to determine that 4032 kj of heat is released during the combustion of 88.0 grams of propane, C3H8 (44.0 g/mol).
Determined if CS 2 of 2.500 grams mix with an excess of chlorine gas , 9.310 Kilo joule of heat is evolved. What sort of reaction is this , Is the reaction exotermic also find out delta H for the reaction?
What mass of calcium metal could be obtained from one kg of limestone that is 50.0% pure CaCO3?
Calculating Pressures using different laws, Converting between Units of Pressure, Part A, Convert 0.700atm of pressure to its equivalent in millimeters of mercury.
A sample of vanadium haveing 5.67 grams of mass upon heating combined with oxegen of 4.45gramsto make vanadium oxide. Determine the emperical formula for this compound?
At a certain temperature, the equilibrium constant for the reaction 2HI(g)39. At a certain temperature, the equilibrium constant for the reaction 2HI(g) H2(g) + I2(g) is 0.49.
The solubility of silver sulfate in water is 0.223% (w/v) at 35°C. Calculate the solubility product of this salt at this temperature
A star is 3.28 x 1014 km from Earth. How many days does it take for light to travel from the star to Earth?
A sample of a gas occupies 1470 mL at 60.7?C and 740 torr. What volume would it occupy at the same pressure and 450?C.
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