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An unknown compound contains only C, H, and O. Combustion of 4.40 g of this compound produced 8.79 g of CO2 and 3.60 g of H2O. What is the empirical formula of the unknown compound? CHO
How many moles of steam are produced at 2.00 atm and 202.0 by the complete combustion of 12.50 L of methane gas?
Suppose that you titrate a 3 g sample of orange juice and it turns out to contain only 95.5mg of vitamin C. Further, it took 32.45mL of DCP solution to reach the end point of the titration.
A student titrated a .4630g sample of unknown monoprotic acid with 0.1060m NaOH. Using a derivative curve, the student found, the equivalence point volume to be 28.70mL of NaOH
ALso suppose that an equal Vmax is possible with both of the substrates. Which substrate will show a greater rate of rection at 1 x 10^-3 M. Which substrate will show a greater rate at 1 x 10^-2 M. What will be the effect of addition of B on the r..
Calculate the pH at the equivalence point for titrating 0.250 solutions of each of the following bases with 0.250 M HBr
What is the enthalpy of this reaction. Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
Calculate the work associated with the compression of a gas from 121.0 L to 80.0L at a constant pressure
Calculate script e° values for the following cells. Which reactions are spontaneous as written (under standard conditions)? Balance the reactions. Standard reduction potentials are found in the table
Of the following compounds, which would be considered ionic bonds and which would be considered covalent bonds, and why
A solution contains Cr3+ ion and Mg2+ ion. The addition of 1.00 L of 1.55M NaF solution is required to cause the complete precipitation of these ions as CrF3(s) and MgF2(s). The total mass of the precipitate is 50.2g.
Based on formal charges, which statement about the best Lewis structure of a molecule composed of one atom each of N, S, and Cl
The remains of an old campare are unearthed and it is found that there is only 80% as much radioactive carbon-14 in the charcoal samples from the campare as there is in modern living trees
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