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An unknown compound contains only C, H, and O. Combustion of 2.80 g of this compound produced 5.59 g of CO2 and 2.29 g of H2O.What is the empirical formula of the unknown compound?
An "A" group metal (M) reacts with chlorine and oxygen to form ionic compounds with the formulas MCl4 and MO2. Propose a possible identity for the metal M. Explain your reasoning.
If it takes 50.0 mL of 0.0250 M K2Cr2O7 to titrate 30.0 mL of a solution containing Fe2+, what is the molar concentration of Fe2+?
Describe how you would prepare 150.0 mL of a pH = 5.00 buffer solution from a solution of 0.200-M aniline, C6H5NH2, a weak base
A canister is filled with 390 of ice and 100 of liquid water, both at 0.0 . The canister is placed in an oven until all the has boiled off and the canister is empty. How much energy in calories was absorbed?
Carbon dioxide, which is recognized as the major contributor to global warming as a greenhouse gas, is formed when fossil fuels are combusted, as in electrical power plants fueled by coal, oil, or natural gas
Assume also that on a yearly basis the lake is completely mixed, and that the small river flowing into and out of the lake can be neglected as far as acidification is concerned. How many years will it be before the lake will reach a pH of 5.0?
Calculate the value of heat of vaporization for this liquid Calculate the normal boiling point of this liquid.
How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.700 it M solution of ammonia, NH_3, to prepare a buffer solution that has a pH of 8.62? K_b for ammonia is 1.8 * 10^{-5}.
76 g of Cr2O3 and 27 g of Al completely react to form 51 g of Al2 O3, how many gram of Cr are formed?
12.0 moles of gas are in a 8.00 L tank at 23.2 C. Calculate the difference in pressure between methane and an ideal gas under these conditions.
Calculate how much heat is released when this reactions occurs at a constant temperature of 25.00 degree Celicus in a constant-volume container.
At the equivalence point of the titration of formic acid by NaOH, the pH of the solution is around 8 - 10. What would be a good indicator
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