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If the partial pressures of CO2 and H2O in exhaled air are each 27.0 torr at 30.6°C, calculate the masses of CO2 and of H2O exhaled in 1.00 hour of sleep.
What is the maximum volume (at STP) of butene gas that could be obtained from the reaction of 1-bromobutane with KOH if all of the 1-bromobutane is converted to butene
Suggest an experimental method to ensure that the reaction of 2-bromobutane produces entirely a) 1-butene b) 2-butene
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air.
A sample of an unknown gas effuses in 11.9 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.19 min. What is the molar mass of the unknown gas
When 37.2 L ammonia and 42.0 L oxygen gas at STP burn, nitrogen monoxide and water are produced. After the products return to STP, how many grams of nitrogen monoxide are present
Designate True (T) or False (F) for each of the following statements and a sample of an optically active substance that consists of a single enantiomer is said to have an enantiomeric excess of 100%
What is the atomic weight of Mn if the atomic weights for Ag and Br are 107.868 and 79.904 respectively
When 0.577 L of Ar at 1.20 atm and 227°C is mixed with 0.296 L of O2 at 501 torr and 127°C in a 400. mL flask at 27°C, what is the pressure in the flask
the actual chemical formula must remain top secret. The company is interested in the drug's Ka value because only the dissociated form of the chemical is active in preventing cholesterol buildup in
If I have .0888g of potassium hydrogen sulfate, its density is 2.322g/mL and its molecular weight is 136.17g/mol how many mols do I have
What mass of melamine, C3N3(NH2)3 will be obtained from 178.5 kg of urea, CO(NH2)2 if the yield overall reaction is 83.0%
Propane (C3H8) is burned in oxygen to produce carbon dioxide and water. The heat of combustion of propane is -2012 kJ/mole. How much heat is given off when 3.0 mol C3H8 are reacted with 10.0 mol O2
Fish produce glycerol to survive the freezing waters of the Arctic. Determine the degree to which the freezing point of blood and other biological fluids is lowered with the help of glycerol. What i
If all the energy obtained from burning 1.09 pounds of propane is used to heat water, how many kilograms of water can be heated from 23.7 degrees celsius to 48.7 degrees celsius
1. your expense account allows you to spend $80.00 a day when you are on a trip. If you have a week-long trip to tiny country of Kratvia, where the exchange rate is 3.50 kratvels per dollar, how
Write net Bronsted equations and determine the equilibrium constants for the acid-base reactions that occur when aqueous solutions of the following are mixed.
1. my doctor only measures medicine in scruples. (old unit of mass) If he prescribed 0.382 scruples of medicine, how many milligrams should I ask for at the pharmacy? 1ounce=437.5 grains 1 sc
A small piece of zinc reacts with dilute HCl to form H2, which is collected over water at 16°C into a large flask. The total pressure is adjusted to barometric pressure (752 torr), and the volum
A reaction mixture in a 5.21 L flask at a certain temperature contains 27.1g CO and 2.32g H2. At equilibrium, the flask contains 8.63g CH3OH
A gas mixture contains 8.10g of N2, 1.70 g of H2, and 14.70 g of CH4. what is the mole fraction of H2 in the mixture
Propose a mechanism for the following reaction. Be sure to show all the steps and the reactive intermediates
The ClO2 molecule was involved in a chemical reaction in which it underwent oxidation. Based on the change in oxidation numbers, which of the species listed below is a possible product of the reacti
When you are trying to calculate molarity, what volume do you use? I have a final volume of NaOH and an initial Volume and volume of NaOH
A phosphate buffer solution (25.00 mL sample) used for a growth medium was titrated with 0.1000 M hydrochloric acid. The components of the buffer were sodium monohydrogenphosphate and sodium dihydro