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A dry-cleaning solvent (molecular weight = 146.99 g/mol) that contains C, H, and Cl is suspected to be a cancer-causing agent. When a 0.325 g sample was studied by combustion analysis, 0.583 g of CO2 and 0.0790 g of H2O formed. How many moles of each of the following were in the original sample and what is the molecular formula?
Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 18 degrees celsius
Calculate the mass of sodium hydroxide that must be added to 1.00 L of 1.00 M HC2H3O2 to double the pH of the solution (assume that the added NaOH does not change the volume of the solution).
Calculate the concentration of a solution with a measured absorbance of 0.224 if b=1.00cm and ε = 4.4 x 10 to the 5th L/cm mol.
Calculate the molecular weight of gas if 3.85 grams of it occupies 175 milliliters at 695 mmHg and 115 degree centigrade
Write both an equations using Lewis Structures and a balanced chemical equations for the following reactions: Silicon atoms and Chlorine molecules Lithium atoms and Bromine molecules Ethylene molecules
Calculate the concentration of all the species, ions, and molecules, and the pH of the following solutions. All solutions have a total volume
For lab this week i need to separate a mixture of caffeine and Phenacetin using Acid-BAse Extraction. What reagent should i use for the separation of components by extraction of the dichloro methane layer
The work performed by a system against the atmospheric pressure to which it is kept open during an experiment in the lab is equal to.
The tire is filled with dry air at sea level and a temperature of 60F to 32lb/in^2. Standard sea level pressure is 101325 Pa at 0 degree C (STP). How many moles of air are contained in the tire. How many molecules
if 100.0 grams of copper cu completely reacts with 25.0 grams of oxygen how much copperii oxide cuo will form from
A 31.0-g sample of water at 290. K is mixed with 48.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Chloroform has a normal boiling point of 61 degrees C and an enthalpy of vaporization of 29.24 kj/mol. What are the values of delta Gvap and delta Svap at 61 degrees C
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