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A 6.67 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion producing 15.17 mg of CO2 and 6.19 mg of H2O. What is the empirical formula of the compound? (Type your answer using the format CxHyOz for the compound CxHyOz)
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(b) A compound is composed of elements C, H, and N. A 7.875-mg sample of the unknown compound was combusted, producing 21.363 mg of CO2 and 6.125 mg of H2O. What is the empirical formula for this compound? (Type your answer using the format CxHyNz for the compound CxHyNz)
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If the compound has a molar mass of 160 ± 5 g/mol, what is its molecular formula?
A sample of a refrigeration gas in a volume of 410 mL, at a pressure of 1.26 atm, and at a temperature of 11.0 °C, was compressed into a volume of 172 mL with a pressure
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water,
Iincreasing the total pressure on the system by decreasing its volume, (c) adding gaseous I2 to the reaction mixture?
how many moles of nitrogen gas will be formed upon the complete reaction of 31.6 grams of nitrogen monoxide with excess hydrogen gas?
Al(OH)3 + 3HCl ---> AlCl3 + 3H2O Determine the moles of acid neutralized if a tablet contains 0.200 mol Al(OH)3
The active ingredient in aspirin is acetylsalicylic acid (HC9H7O4) a monoprotic acid with Ka = 3.3 10-4 at 25°C. What is the pH of a solution obtained by dissolving two extra-strength aspirin tablet
What is the percent by mass of NaHCO3 in a solution containing 10 g of NaHCO3 dissolved in 300 mL of H2O
salicylic acid reacts with methanol to produce oil of wintergreen and water. If water is added to the solution, a precipitate is formed. identify the precipitate and explain why it is formed.
How many kilojoules are required to heat the nugget from 500 C to 1064 C and convert all the gold to liquid?
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+?
Given the reaction 6CO2+6H2O-> C6H12O6+6O2. What is the total number of moles of water needed to make 2.5 moles of C6H12O6?
The solubility of N2 in blood can be a serious problem (the "bends") for divers breathing compressed air (78% N2 by volume) at depths greater than 50 ft. Find the volume (in mL) of N2, measured at 25degrees celsius and 1.00 atm, released per liter..
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