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A compound contains only carbon, hydrogen, and oxygen. Combustion of 10.68g of the compound yields 16.01g of CO2 and 4.37g of H2O. The molar mass of the compound is 176.1g/mol. What is the empirical and molecular formulas of the compound?
Coniine, a toxic substance isolated from a poison hemlock, contains only carbon, hydrogen, and nitrogen. Combustion analysis if a 5.024mg sample yields 13.90mg of CO2 and 6.048mg of H2O. What is the empirical formula for Coniine
if nh32.0m h20.0013m and n2 0.033m then determine in which direction will the reaction proceed to reach equilibrium?
Since the sample is an unknown solid, I will have to make a solution without knowing exactly what to mix. In your expertise, how much of the solid do you expect to dissolve in what volume of water and what is your reasons for choosing these amount..
The equilibrium constant Kc for this reaction is greater than one. Based on this information, which of the following statements is correct?
What is the molarity of C6H12O6 in an aqueous solution that is prepared by dissolving a 20.95 g sample of impure C6H12O6 in water to make 1,450 mL of solution. Assume that the sample is 93% C6H12O6 by mass. Enter your answer in mol/L, accurate to ..
Describe how you would make 1 L of buffer with a pH of 5.00 using only pure materials and deionized water so that the total concentration of the conjugate acid/base pair is 0.200 M. Give the amounts of the pure materials in grams if they are solid..
If a 1.00 cm^3 solid cube of alumina ceramic initially at 300 C is placed in 50 ml of H2O initially at 25C in a closed, insulated container: (a) what will be the final temperature of the system when thermal equilibrium is attained.
You are on a backpacking trip and need to make a fire. You have some batteries and a piece of foil from some gum. These should be sufficient to get the fire going.
A galvanic cell is composed of these two half cells, with the standard reduction potential shown: Co2+(aq) + 2e- Co(s) -0.28 volt Cd2+(aq)+ 2e- Cd(s) -0.40 volt The actual concentrations are: Co^2+(aq) = 0.00100M, Cd^2+= 0.100M. What is the p..
A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is
By what factor (how many times) will the rate constant increase when the temperature is raised from 10°C to 28°C?
The liquids propanol (P=20.9 torr at 25 degrees celsius) and isopropanol (P=45.2 torr at 25 degrees celsius) are mixed such that the mole fraction of propanol is 0.600. At 25 degrees celsius, what is the vapor pressure of the resulting solution
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