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Butane gas is compressed and used as a fuel in disposable lighters and light-weight camping stoves. A typical lighter contains 5.50 ml of butane, C4H10 (d=0.579g/ml) A)What mass of oxygen is needed to burn the butane in the lighter completely? B)How many moles of CO2 form when all of the butane is the lighter burns? C)How many molecules of gas form when the butane in the lighter burns completely?
The annual production of zinc sulfide (ZnS) is 4.0 x 10^4 tons. Estimate the number of tons of SO2 produced by roasting it to extract zinc metal.
Health Canada recommends a an upper level intake of Na to be 2300 mg. How many ounces (oz) of the meat must be ingested for a person to meet this level?
A sample of nitrogen of mass 3.12 g at 23 C is allowed to expand reversibly and adiabatically from 400 cm^3 to 2 dm^3
Ferrophosphorus reacts with pryite producing iron(II) sulfide and a compound that is 27.82% P and 72.13% S by mass and has a molar mass of 444.56 g/mol. a) determine the empirical and molecular formulas of this compound. b) Write a balanced chemic..
Calculate the change in internal energy of the following system: a balloon is cooled by removing 0.657 kJ of heat. It shrinks on cooling, and the atmosphere does 384J work on the balloon.
You have 100.0 mL of a solution of hydrochloric acid that has a pH of 3.00. You add 100.0 mL of water to this solution. What is the resulting pH of the solution?
A solution is prepared by mixing 50.0 mL of 0.11 M Pb(NO3)2 with 50.0 mL of 1.3 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. Ksp for PbCl2(s) is 1.6* 10-5.
A gas mixture containing oxygen, nitrogen and neon exerts a total pressure of 1.20 atm. If helium added to the mixture increases the pressure to 1.50 atm, what is the partial pressure (atm) of helium
Calculate the solubility of silver chromate in 0.005 M Na2CrO4.
In a first order decomposition in which the rate constant is 0.00830 sec-1, how long will it take (in minutes) until 0.309 mol/L of the compound is left, if there was 0.517 mol/L at the start
When iodine solution is mixed with cyclooctene, the color of the iodine disappears. Write a reaction that shows the product
In a reaction between pure acetic acid and sodium bicarbonate, 26.6 grams of sodium bicarbonate was added to 12.0 mL of acetic acid. Which reactant is the limiting reactant in this reaction
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