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Benzoic acid (C7H6O2, 1.9862 g) was ignited in a bomb calorimeter which is having the water (2 kg) as the primary heats ink. The temperature increase observed was 3.83 degrees Celsius. Where the he
The calorimeter contained 500 g of water and the temperature rise measured was 1.40 degrees Celsius. A sample of magnesium metal (0.1946 g) was ignited in a constant-volume calorimeter of heat capac
Determine values of n for the older Simpson function (with fixed n) versus adaptive quadrature. Show difference in number of partitions for different versions for integrating sin(1/x) from 0.1 to 8
A 2.00 ml portion of this solution was placed in a 100 ml volumetric flask and diluted to the mark with demonized water. A 1.50 g sample of an iron containing compound was dissolved in the 100.0 ml
Determine the numbers of grams of oxalate (C2O4-2) were present in the reaction? Explain what percent of the unknown compound is oxalate?
Determine how many grams of soluble calcium phosphate would be found in a person's mouth when the mineral content of your teeth is largely calcium phosphate and the amount of saliva in the average
Since argon is normally a colorless gas, explain in a couple of complete sentences where the color is coming from. When electrical current is applied to a clear, sealed glass tube filled with
Explain why is the preparation of alkyl napthyl ether under phase transfer conditions not possible starting with alkyl alcohol and 2-bromonapthalene?
Demonstrate the mechanism of the electrophonic aromatic substitution of sec-butyl benzene, show the desired product and the unwanted side products.
The mass of weight 32 lb(mass m = 1 slug) is attached to the free end of long light spring which is stretched 1 ft by the force of 4 lb(k = 4lb/ft).
Determine how many photons having a wave length, λ, of 3.00 mm would have to be absorbed to heat 150. ml of water (~ 1 tea cup) from 55.0 °F to boiling (212°F)?
Extracting twice with two 25mL aliquots of a solvent is more effective than extracting once with50mL. Prove this by using an example, where the solubility of compound X is the same in water as it is
Determine the volume of NaOH solution expected assuming that the NaOH concentration is ~0.1 M suppose when you dissolve the 0.34 g of KHP in 20mL of water and titrate with the NaOH solution.
A rock was recently discovered near the Arctic Circle which was found to contain 1.0103nanograms (ng) of 206Pb and 5.5732 ng of238U.
Determine the binding energy for Cf-253 if one atom of this nuclide has an atomic mass of253.06920. Cf-253 decays primarily by beta emission to yield Es-253. This process has a half-life of 17.81 da
Determine the number of neutrons in the nucleus of the resultant nuclide of Y when a nuclear reaction involves the hypothetical element X, which has an atomic number of 168, as a reactant.
A mass of 15kg is held 1.20 m over a relaxed spring having a spring constant of 320 N/m. The mass is dropped onto the spring. i) Determine how far does the mass compress the spring?
Explain how much energy is released when one mole of deuterium is fused with one mole of tritium according to the above reaction? The masses of the atoms and the neutrons are:
A 110 ball and a 240 ball are joined through a 38 long, mass less, rigid rod. The balls rotate around their center of mass at 130. Determine the speed of the 110 ball in m/s?
If all the H2O (g) in the atmosphere (assume it is 2% by volume) suddenly condensed to H2O(l),and all the enthalpy of this process was captured and converted to electrical energy, explain how l
How can compare this distance to the molecular diameter of the molecule measured by the van der walls coefficient, b. For N2, a=1.370 bar L^2 mol^-2, and b = 3.87*10^-2 L mol^-1
Illustrate the straight chain fisher projection of this molecule. classify this sugar as reducing agent or non-reducing. Write down an equation for its reaction with tollens reagent
The piece of wire is 52 feet long. It is cut into two pieces, each of which is then bent into the square. Total area of 2 squares is 97 square feet. Find lengths of sides of two squares?
Circumference of beaker is 16 cm and its height is 9 cm, and honey is 6 cm below top of rim. Find shortest route for ant to take to reach honey?
A ball is dropped from rest from the top of a building of 10 m. i) Determine the velocity of ball if it has fallen a distance of 3 m. ii) Determine the velocity of ball as it strikes the ground