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35L of water needs to be boiled on a camping trip. THe fuel used is C7H16. 15 % of heat generated goes to heating the water, the density of the fuel is 0.78 g/mL the initial temperature of the water is 25 degrees celcius and the standard enthalpy of formation is -224.4 kJ/mol
Acid catalyzed hydration of 2-pentene giives two alcohols, each with the molecular formula C5H12O. a) Draw the structure of 2-pentene.
A gas mixture is made by combining 8.1 g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 19.20 L. What is the molar mass of the unknown gas?
Calculate the number of moles of quicklime, CaO, that would be produced by the decomposition of 30.0 moles of limestone, CaCO3, in the following reaction.
How many grams of CH3OH must be added to water to prepare 150mL of a solution that is 2.0 M CH3OH?
A room contains 47kg of air. How many kilowatt-hours of energy are necessary to heat the air in the house from 7 degrees celsius to 26 degrees celsius
Consider a 2430-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the time of the measurement, what is the uncertainty in the velocity of the car?
A basketball is inflated to a pressure of 1.50 atm in a 20.0°C garage. What is the pressure of the basketball outside where the temperature is -5.00°C?
What is the concentration of an unknown water sample if the assumed resistance is 650ohms?
a) when 34.0g of NH3 reacts with 96.0g of O2 what is the partial pressure of NO in the sealed container?
How many moles of water will be formed from 0.2 mole of CH4 reacting with enough O2. In this reaction CH4+2O2--->CO2+2H2O
How much PV work is done (in kilojoules) and what is the value of deltaE (in kilojoules) for the reaction of 6.50g of acetylene at atmospheric pressure if the volume change is -2.80 L?
An effective treatment for some cancerous tumors involve irradiation with "fast" neutrons. The neutrons from one treatment source have an average velocity of 3.3 x 10^7 m/s
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