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Determine the empirical formula of a compound that has the following composition:
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Chemistry
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- Phenol is a compound of carbon, hydrogen, and oxygen used commonly as a disinfectant. Combustion of a 175-mg sample of phenol yielded 491 mg CO2 and 100. mg H2O. Calculate the empirical formula of phenol. Identify what other information is needed to determine whether the empirical formula is the actual molecular formula.arrow_forwardWhat mass is represented by 0.0255 mol of each of the following compounds? (a) C3H7OH, 2-propanol, rubbing alcohol (b) C11H16O2, an antioxidant in foods, also known as BHA (butylated hydroxyanisole) (c) C9H8O4, aspirin (d) (CH3) 2CO, acetone, an important industrial solventarrow_forwardBoric acid, H3BO3, is a mild antiseptic and is often used as an eyewash. A sample contains 0.543 mol H3BO3. What is the mass of boric acid in the sample?arrow_forward
- Calculate the molar mass of the following substances. a. b. c. (NH4)2Cr2O7arrow_forwardWhich of the following pairs of compounds have the same empirical formula? a. acetylene, C2H2, and benzene, C6H6 b. ethane, C2H6, and butane, C4H10 c. nitrogen dioxide, NO2, and dinitrogen tetroxide, N2O4 d. diphenyl ether, C12H10O, and phenol, C6H5OHarrow_forwardSmall amounts of tungsten (W) are usually added to steel to strengthen and harden the steel. Two ores of tungsten are ferberite (FeWO4) and scheelite (CaWO4). How many grams of FeWO4 would contain the same mass of tungsten that is present in 725 g of CaWO4?arrow_forward
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