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How many grams of carbon dioxide (CO2) can form when a mixture of 4.95 g of ethylene (C2H4) and 3.25 g of oxygen is ignited. Assume complete combustion to CO2 and H2O.C2H4 + 3O2 2CO2 + 2H2O
0.354 g2.98 g15.7 g2.000 g0.102 g
a student begins with 5.00 mL of acetic anhydride and 2.08 g of salicylic acid. Once the reaction is complete, the student collects 2.01 g of aspirin
A 280- mL flask contains pure helium at a pressure of 757 torr. A second flask with a volume of 465 mL contains pure argon at a pressure of 715 torr.
How many hours are required for 0.100 mol of electrons to flow through a circuit if the current is 1.00 A
what is the concentration in the solution of the first ion when the second one starts to precipitate at 25 C?
Calculate the change in entropy (deltaS) when one mole of diamond is heated from a temperature of 0 K to 400 K at a constant pressure of 1 bar
15g of steam at 373 K is added to 250g of H2O at 298 K at constant pressure of 1 bar. Is the final state of the system steam or liquid water? Calculate changes in entropy for the process.
a baseball weighs 5.19oz. what is teh kinetic energy in joules of this baseball when it is thrown by a major-league pitcher at 95 mph?
a gas expand and does P-V work on the surroundings equal to 294 J, at the same time , it absorbs 196J of heat from the surroundings. what is the change in energy of the system
Using the information below, calculate the mass of benzene in each phase and find the total mass of benzene at the site.
calculate the energy in joules of a single photon associated with the frequency. Eneter your answers in scientific notation.
The volume of a sample of nitrogen gas initially at STP is decreased and at the same time the temperature is increased. What happens to the pressure of the sample?
what is the maximum mass of an object traveling at 241 m·s-1 for which the de Broglie wavelength is observable?
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