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Isooctane is a standard for gasoline octane rating. A sample weighing .5992 g was found to contain .5040 g of carbon and .09515 g of hydrogen. Its molecular mass is 114. Write the empirical and molecular formulas of isooctane (arranging the symbols in order CxHy).
Conclude the range of pressures that this system can exists as 2 phases By imagine Raoult's law is applied to the system
what masses ofnbsp calcium sulfate and phosphoric acid can be produced from the reaction of 1.0kgnbsp calcium phosphate
The freezing point of 3.5 grams of an unknown organic compound in 100 ml of benzene is 5.0 c calculate the molecular weight of the unknown compound.
Vitamin C contains 40.92% C, 4.58% H, and 54.5% O by mass. What is the empirical formula of Vitamin C
A solution is made by adding 0.51 mol of lithium hydroxide (LiOH) in enough water to form 5 L of solution. Calculate the pH.
A metal crystallizes in a body-centered unit cell with an edge length of 2.00 * 10^2 pm. Assume the atoms in the cell touch along the cube diagonal. The percentage of empty volume in the unit cell will be
A solution with a weak acid was tested with the indicators in this experiment. The colors observed were as follows: - methyl violet: violet
An unknown gas contains 82.6% C and 17.4% H by mass. It effuses at 0.87 times the rate of CO2 gas under the same conditions. What is the molecular formula of the gas
how much will the temp change when 740grams of Iron, stainless steel , aluminum absorbs 1210 cal. of heat energy
Titration of the newly freed EDTA required 24.6 mL of 0.0220 M Ca2 . What were the molarities of Cd2 and Mn2 in the original solution?
Is a 0.15M solution of potassium benzoate C6H5COO-K+ acidic, basic, or neutral? Calculate the pH. The Kb for benzoic acid is 1.5 X 10^-10.
What is the rate constant of a first-order reaction that takes 343 seconds for the reactant concentration to drop to half of its initial value?
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