Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Calcium reacts with vanadium (V) oxide according to the following equation. How many grams of calicum oxide can be formed if 2.000 g of calicum is mixed with 1.500g of vanadium (V) oxide?
A spectrophotometer was calibrated with a 6.1×10-4 M (in Cu) Cu-neocuproine solution. This calibration was carried out in a 1.00 cm cell, and yielded an absorbance of 0.235 AU. An unknown was
What is the theoretical yield of C2H4O2? If only 28.8 g of aspirin are produced, what is the percent yield of the reaction? How much unreacted material remains after the reaction?
1.994 g sample of ethanol, CH3CH2OH, is combusted in a bomb calorimeter. The temperature of the calorimeter increases by 10.91 K.
A hurricane is simply a steam engine which draws much of its destructive power from the evaporation and condensation of water. The heat of condensation of water is -2257 kJ/kg.
The freezing point and boiling points of Bromine (Br2) are -7.2°C and 58.8°C, respectively. Given that the heat of melting is +10.57 kJ/mol .
Combustion of 1.96g of a compound containing only hydrogen and carbon produced 6.35g of CO2 and 2.25g of H2O. The molecular weight of the unknown hydrocarbon was determined by mass spectroscopy to b
If the external source has an emf of +6.0 V and the electrolytic cell is 65 percent efficient, how much electrical power is expended to electroplate the bumper? (in kWh)
There is a line in my textbook-"Solids have a property ISOTROPY due to which they show different values of some physical quantities like refractive index when measured along different directions".
A solution of malonic acid, H2C3H2O4, was standarized by titration with 0.1000M NaOH. If 20.76mL of the NaOH solution were required to neutralize completely 13.15mL of malonic acid solution, what is
In testing a relative stabilities of Cu (II) species using a well plate, a student adds 6 drops of 1 M of NH3 to 6 drops of 0.1 M of Cu(NO3)2. He observes that a blue precipitate initially forms, bu
Determine the boiling point elevation of a solution of 133.0 mg of carvone (C10H14), oil of spearmint) dissolved in 1.500 g of carbon disulfide (kb=2.34 Celsius/m)
Determine the melting point of an aqueous solution containing 147mg of saccharin (C7H5O3NS) added to 1.00mL of water (density of water + 1.00g/mL, Kf=1.86 Celsius/m)
Caffeine the freezing point of a solution prepared by dissolving 150 x 10-3g of caffeine in 10.0g of camphor is lower by 3.07 than that of pure camphor (Kf=39.7 Celsius/m). What is the molar mass o
A "miracle" lotion, which is sold under the label of FixitAll, is a mixture containing both zinc oxide (ZnO) and iron oxide (form unspecified). A 1.4882 gram sample of the dried lotion was dissolved
One mole of S2 gas is held at a pressure of 0.20 atm and a temperature of 800k. two moles of oxygen gas are held at a pressure of 0.40atm and a temperature of 400k. What is the difference in volume
Propane (C3 H8) reacts with oxygen (O2) to produce a carbon dioxide and water. The reaction is exothermic, with ΔH= -2220 kJ/mol. What is the heat of formation of propane?
An argon ion laser puts out 5.0 W of continuous power at a wavelength of 532 nm. The diameter of the laser beam is 5.5 mm. If the laser is pointed toward a pinhole with a diameter of 1.2 mm, how man
Calculate how many grams of 4-ethylphenol you need for 1.20 mmol? Calculate how many grams of tetrabutyl ammonium bromide you need for 0.05 mmol?
What is the molar mass of toluene of 0.85g of toluene depresses the freezing point of 100g of benzene by 0.47Cdegrees? K of benzene is 5.12Cdegrees/m.
How many grams of dipotassium oxalate (M.W.=166.22) should be added to 27.293 mL of 0.6682 M HClO4 to provide a solution with a pH value of 5.6262 when the solution is diluted to 53.981 mL?
If the oxalic acid in a 50.0 mL of aqueous spinach extract was titrated with 0.0250 Molarity NaOH and the 1st equivalence point was reached after 15.0 mL of standard base solution added, what is th
Develop a method for testing hydrogen peroxide solutions available at the supermarket or drugstore. Devise strategies for testing the stability of these solutions in various storage conditions: tem
The oxidizing power of household bleach solutions can be lost when they are exposed to heat or sunlight, or due to something as simple as leaving the cap off the bottle. Design experiments to test t
Oxygen makes up 46.7% by mass of the Earth's crust. How many grams of oxygen are present if a sample of the crust has a mass of 325 g?