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How many liter of ethane, measured at 15 degrees C and 711 torr, must be burned to liberate 2.73 * 10^4 KJ of heat? 2(C2H6) +7(O2) ----> 4(CO2) + 6(H2O) [delta H= -3.12 *10^3]
Solar furnaces are designed to focus sunlight (say, with a parabolic mirror ) onto a relatively small area. given that the surface temperature of the sun is about 600K.
A gas occupies 4.71 liters at 62°C and 795 torr. What volume will it occupy if it is cooled to 17°C and compressed to 911 torr?
when a substance is being reduced, what type of current is produced?
During a refueling outage, workers discover black, soft material in the reactor core (obviously a Foreign Materials Exclusion Area breech). To help identify the breech source, you are asked to determine the material
306 mL of a .208 M solution of silver nitrate will react with 146mL of a .170 M solution of sodium phosphate to produce how many grams of silver phosphate precipitate?
An unknown gas effuses at a rate of 86.6 mol/hr. Under similar conditions, I2 effuses at a rate of 30.4 mol/hr. What is the molar mass of the compound.
Initially, the left compartment contains 1.0mol of N2, the middle contains 3.0 mol of O2, and the right contains 4.0 mol of H2 at 298 K. Calculate the Gibbs energy and entropy of mixing when the partitions are removed.
What is the hydronium-ion concentration of a 4.07 10-4 M solution of p-bromobenzoic acid, BrC6H4COOH, for which Ka = 1.00 10-4
showing electron flow with arrows, for the acid-catalyzed hydrolysis of ethyl acetate to acetic acid and ethanol- the reverse of a Fischer esterification reaction.
Calculate the molar concentration of H3PO4 in this solution: Calculate the number of grams of this solution required to hold 87.5 g H3PO4:
A 1g sample of carbon obtain from material found in a ancient site gave 7900 carbon-14 disentegrations in a 20-hour period. In the same amount of time 1g of carbon from a source found yesterday under went 18,400 disintegrations.
A well-insulated rigid tank of volume 0.2 m3 initially contains helium at 70°C and 200 kPa. A valve connected to the tank is opened, and helium is withdrawn slowly until the pressure within the tank drops to p. An electrical resistor inside the ta..
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