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Consider the combustion of octane C8H18. What volume of oxygen gas at STP would be needed for the complete combustion of octane.
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A dessert contains 131.55 g of vanilla ice cream, 90g of fudge sauce, and 40.0 g of nuts. What is the total weight, in pounds, of the dessert?
1. Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has the unwieldy formula of KHC 8 H 4 O 4 . This is often written in shorthand notation as KHP. If ...
The following sequence of reactions occurs in the commercial production of aqueous nitcric acid: 4NH3(g)+ 5O2(g) -> 4NO2 (g) + 6H2O(l) ΔH = -907 kJ 2NO(g) + O2(g) ? 2NO2(g) ΔH= -113 kJ 3NO2 + H2O(l) -> 2HNO3(aq) + NO(g) ...
Hydrazine, N2H4, is dibasic and has Kb1 = 3.35x10-7 and Kb2 = 1.42x10-16. Calculate the concentration of OH- ions in a 29.91 M aqueous solution of hydrazine. Express your answer in mM.
What was the initial energy level of an electron if it was excited by a photon of wavelength 38.9µm and jumped to an energy level of 10?
It takes 37.8 mL of 0.2114 M NaOH to neutralize 19.3 mL of an oxalic acid solution with an unknown concentration. Calculate the actual concentration of this oxalic acid solution. Don't forget to look at the balanced equa ...
Determine the kinetic energy of a 75.0 kg mass moving at 61.3 m/s. Your answer should be in Joules.
A student finds that the mass of an object is 6.62 kg. She is told that her measurement has an error of 12.3%. What is the true mass (in kg) of the object?
Does dissolved solids such as sugar and salt modify/change the boiling point of water; do mixtures have the same boiling point as pure substances?
Consider reacting 100.00 mg magnesium with 20 mL of 1 M hydrochloric acid. Which reactant is limiting reagent? What is theoretical yield of hydrogen? express your answer in millimoles.
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