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Part A
What mass of carbon dioxide is present in 1.00 \rm m^3 of dry air at a temperature of 25 C and a pressure of 685 torr?
Part B asks
Calculate the mass percentage of oxygen in dry air.
A gaseous fuel mixture stored at 745mmHg and 298 K contains only methane CH4 and propane C3H8. When 11.5L of this fuel mixture is burned, it produces 774kJ of heat. What is the mole fraction of methane in the mixture
The enthalpy of combustion of acetylene C2H2 is C2H2(g) + 5/2O2(g) ->2CO2(g) + H2O(l) H°rxn= -1299 kJ Calculate the enthalpy of formation of acetylene, given the following enthalpies of formation H°f[CO2(g)] = -393.5 kJ/mol ,H°f[H2O(l)] = -285.8 k..
Find the molar mass of the compound. The reezing point of benzene is 5.49 degree celcius.
A lake has a pH of 8 and the total molar concentration of nitrogen species (NH3 and NH4+) is 7.1×10-4 mol/L. what is the percentage of aqueous NH3 in the lake
Write chemical equations for the reaction of calcium with the following substances, making sure that the numbers and kinds of atoms are the same on both sides of the equations
What is the molarity of the acid of a mixture of 20.00 ml HCl (aq) + 14.25 ml of 0.2030 M NaOH
If the protein has a molecular weight of 15,000, express its initial concentration in umoles/ml and in umoles/ul. If we want 2 umoles of the protein for a reaction, how much of the original solution do we need
63mL of a 1.70 M solution is diluted to a volume of 218 mL. A 109mL portion of the solution is diluted using 117mL of water. What is the final concentration?
the concentration of mud in the dirty stream from the settling basin to the lagoon is 4000 mg/L. Calculate the flow rates of the two discharge stream (L/s) that exit from the settling basin.
A strip of electrolytically pure copper weighing 3.178 gram is strongly heated in a stream of oxygen until it is all converted to a black oxide. The resultant black powder weighs 3.978 g. What is the formula of the oxide?
In trans-1,2-dibenzoylethylene, even though the conjugated C=O group frequency coincides directly with the expected C=C stretching fequency, we would not have expected to observe the late stretching mode in the infrared spectum. Why?
three students chemist measured 50.0 ml of 1.00 m naoh in seperate styrofoam coffee cups calorimeters part b. brett
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