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1. Suppose you burn 10.00g octane (C8H18) in a (very very very large) container with a moveable piston. Assuming a temperature of 500K and expansion against 1.00atm of pressure, how much work, in Joules, can be done by the system if the octane is completely converted to carbon dioxide and water vapor? What will the enthalpy change be for the process?
2. Calculate the root-mean-square speed of the carbon dioxide molecules in the question above.
Calculate the change in internal energy of the system and determine whether the process is endothermic or exothermic: a) a balloon is heated by adding 850J of heat. It expands,
if 5.50 mol calcium carbide reacts with an excess water, how many moles of acetylene will be produced?
If 0.20g of gas occupies 400 mL at 30 degrees celsius and 700 mm Hg of pressure, what is the molar mass of the gas?
Calculate the total volume of gas (at 124C and 758mmHg) produced by the complete decomposition of 1.45 kg of ammonium nitrate.
The rate constant of some reaction double with 10 degree rise in temperature. Assume that a reaction takes place at 295 K and 305 K. What must the activation energy be for the rate constant to double as described?
an antacid, contains CaCO3. If Tums is added to 20.0mL of 0.400 M HCl solution, how many grams of CO2 gas are produced?
Heart pacemakers are often powered by lithium-silver chromate "button" batteries. The overall cell reaction is: 2 Li(s) + Ag2CrO4(s) -> Li2CrO4(s) + 2 Ag(s)
What mass (in grams)of KNO3 would have to be decomposed to produce 27.1 L of oxygen measured at STP?
What volume of ammonia gas measured at 762 mm Hg and 21.0 °C must be absorbed by the same solution to neutralize the HCl?
How many calories are required to raise the temperature of 125.0g of water from 50.0 degrees c to 95.0 degrees c?
A 486 mL sample of water was cooled from 50.0°C to 10.0°C. Assuming a specific heat of 4.184 J/K g and a density of 1.00 g/mL, find the amount of heat transferred from the water to the surroundings.
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.434 grams of iron and 12.2 mL of 0.52M copper(II) sulfate react to form as much product as possible.
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