Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
The characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon, hydrogen, and oxygen. Combustion of 1.95 of ethyl butyrate produces 4.42 of and 1.81 of . What is the emp
Propose a mechanism for the forward reaction that is based on the molecular collision theory and describe each event (elementary process) in that mechanism.
In an extraction of benzoic acid from a three part mixture containing benzoic acid, methyl orange (and previously cellulose). Why would the top layer of liquid in the separatory funnel be clear if
The enthalpy change for melting ice at 0C and constant atmospheric pressure is 6.01 kJ/mol. Calculate the quantity of energy required to melt a moderately large iceberg with a mass of 1.40 million m
A sample of gas with an initial volume of 33.0 L at a pressure of 765 mmHg and a temperature of 325 K is compressed to a volume of 16.2 L and warmed to a temperature of 440 K. What is the final pres
A 120g sample of an unknown substance was heated from 15oC to 30oC. The substance absorbed 458 joules of energy. What is the specific heat of this substance?
What mass of F2 is needed to produce 205 g of PF3 if the reaction has a 79.3% yield?
What is the main overall driving force for any spontaneous reaction or change?
If 10.3 g of magnesium nitride is treated with water, what volume of ammonia gas would be collected at 20 celcius and .989 atm.
Balance the eqaution C4H9SO+O2 !CO2+ SO2+H2O using the smallest possible integers. What is the sum of the coefficients in the balanced equation?
A bottle of wine contains 14.5% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.
A gas-filled balloon having a volume of 6.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°
"isooctane" a fuel used in gasoline engines because it has an antiknock octance rating of 100, has a density of 0.6919 g cm-3. How many pounds would 20.4 gallons of this fuel weigh?
Radon-222 decays by alpha particle production and has a relatively short half-time (3.82 days). Explain why each decay process poses health risks.
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.289 grams of iron and 21.0 mL of 0.433M copper(II) sulfate react to form as much product as possible, how many millimoles (mmol)
Metallic aluminum reacts with MnO2 at elevated temps to form manganese metal and alunimun oxide. A mixture of the two reactants is 67.2% mole percent Aluminum. Find the theoretcal yield(in grams) of
A typical aspirin tablet contains 500. mg of C9H8O4. What amount (moles) of C9H8O4 molecules and what number of molecules of acetylsalicylic acid are in a 500. -mg tablet?
To obtain the same antifreeze protection requires 76 g of propylene glycol to replace each 62 g of ethylene glycol. Calculate the mass of propylene glycol required to replace 1.00 gal of ethylene g
when an irregularly shaped chunk of silicon weighing 8.763 g was placed in a graduated cylinder containing 25.00 mL of water, the water level in the cylinder rose to 28.76 mL. What is the density of
Sodium bicarbonate is called baking soda because when heated, it releases carbon dioxide gas, which is responsible for the rising of cookies, doughnuts, and bread. Calculate the volume (in liters) o
What volume of 0.200 M HNO3 is needed to titrate 38.7 mL of 0.175 M NaOH? 2) If 42.5L of 0.45 M HCl is titrated with 18.4L
What two cofactors are required for oxidation of fatty acids with an odd number of carbon atoms that are not required for oxidation of fatty acids with an even number of carbon atoms?
Determine the equilibrium concentrations of all the species WHEN 1 MOLE OF H2 and 1 mole of I2 are placed in a 10-liter container, at the reaction temp,k=64.
Describe the nature and characteristics of PCB's. Why are they of importance to an EH&S or FS professional who encounters them when coming upon an incident scene where they are present?
A graduated cylinder contains 142 of water. A 15.0 piece of iron (density = 7.86 ) and a 19.0 piece of lead are added. What is the new water level in the cylinder?