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A reaction has a rate constant of 0.0810 sec-1, how much of the compound (in mol/L) is left after 0.752 min, if there was 0.303 mol/L at the start
Calculate the cost of ingredients to make one gallon of biodiesel from waste vegetable oil (WVO). Assume that all of the waste oil is converted to fatty acid methyl esters and that 1 gallon of WVO y
In a first order decomposition in which the rate constant is 0.00830 sec-1, how long will it take (in minutes) until 0.309 mol/L of the compound is left, if there was 0.517 mol/L at the start
describe the preparation of 400 mL of a solution that is 0.0500 M in I-, starting with MgI2.
Draw complete Lewis structure for following condensed structural formula. (CH3CH2)CO
Consider the reaction with the rate law, Rate = k[BrO3-][Br-][H+]2 By what factor does the rate change if the concentration of BrO3- is tripled and that of Br- is tripled? Just put in the number as
What is the single-particle collisional frequency (for diatomic Nitrogen)at sea level, with 341 and 1.0 atm? The corresponding single-particle collisional frequency is reported as 10^10 s^-1.
Which is not a characteristic feature of alkanes a. general formula of CnH2n+2 b. tetrahedral geometry
Given that the freezing point of pure water is 0 C and that the freezing point depression constant for water is 1.853 (C kg)/mol calculate the molar mass (g/mol) of this compound
How much heat energy is liberated when 11.0 grams of manganese is used in the formation of Mn2O3
what is the pH of a Tris buffer (pka 8.1) prepared by adding 20 mL of 1M HCl to 100mL of a solution of 0.3M Tris
Chromatography in the presence of 6 M guanidine hydrochloride yields only a peak for a protein of Mr 60,000. Chromatography in the presence of 6 M guanidine hydrochloride and 10mM 2-mercaptoethanol
To qualify to run in the 2005 Boston Marathon, a distance of 26.2 miles, an 18 year old woman had to have competed another marathon in 3 hours and 40 minutes or less. To qualify, what must a woman's
The "roasting" of 48.7 g of ZnS at constant pressure gives off 220. kJ of heat. Calculate the DH for this reaction. 2ZnS(s) + 3O2(g) ® 2ZnO(s) + 2SO2(g)
If a wheelchair-marathon racer moving at 13.3 miles per hour expends energy at a rate of 635 Calories per hour, how much energy in Calories would be required to complete a marathon race (26.2 miles)
A sports-ultility vehicle has an average mileage rating of 18 miles per gallon. How many galllons of gasoline are needed for a 397-mile trip
A single strand of natural silk may be as long as 4.03 x 10^3 m. Convert this length into miles.
Write the net ionic equation, A stream of chlorine gas is passed through a solution of cold, dilute sodium hydroxide.
A small hot air balloon is filled with 1.02 x 10^6 L of air (d=1.20 g/L). As the air in the balloon is heated, it expands to 1.13 x 10^6 L. What is the density of the heated air in the balloon
Order these five gases that occur in the troposphere from most abundant to least abundant: Rn, CO2, CO, N2, Ar and O2.
What is the mass of a magnesium block that measures 2.3 cm * 3.5 cm * 1.5 cm? The density of magnesium is 1.738 g/cm^3.
Diamonds are measured in carats where 1 carat= 0.200 g. The density of diamond is 3.51 g/cm^3. What is the volume of a 2.50-carat diamond
The burning of 80.3 g of SiH4 at constant pressure gives off 3790 kJ of heat. Calculate ?H for this reaction.
How would the results differ if you added sodium p-toluate instead of p-toluic acid to the two-layer mixture of tert-butyl methyl ether and water
Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, Experiment Initial conc of A, mol/L Initial conc of B, mol/L Initial conc of C, mol/L Initial rate, mol/L.s 1 0.1 0.2 0.4 2