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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
The sum of first five terms of the arithmetic sequence is 40, and sum of first ten terms of sequence is 155. Determine formula for nth term of sequence.
A person pulls a sled from rest all along a rough horizontal surface. Given that the sled consists of a mass of 25 kg, the person pulls having a constant force of 50 N directed at an angle of 50 deg
A bullet having mass 3.00 g with an initial speed of around 800 m/s penetrates a tree to a depth of 6.00 cm. Employ the work-energy theorem to find out the magnitude of the frictional force applied
Throughout this time, the car is transferred 25m. When friction is neglected, determine: i) The final speed of the car. ii) The horizontal force with which the mechanic pushes the car
The randomly selected policyholder from group had zero claims in Year 1. Find semiparametric empirical Bayes evaluate of number of claims in Year 2 for same randomly selected policyholder.
A block having mass 3 kg is pushed 2.2 m all along a frictionless horizontal table through a constant 16 N force directed 25 degrees beneath the horizontal. Find out the work done through: i) The a
A billiard ball moving at 5.80 m/s hits a stationary ball of the similar mass. After the collision, the primary ball moves at 5.30 m/s at an angle of around 24.0° with respect to the original li
Suppose that the resistivity of copper is around 1.673 × 10^-8 O*m. The drift speed of the electrons is around 0.0422 mm/s. (i) Determine the potential difference among the two ends of the cater
A weight hanged from a spring is observed to bob up and down over a distance of 8.2 cm 53.3 times each second. Determine its period? Determine how do you compute ans.?
5 men and 4 women are going to occupy the row of nine seats. In how many different arrangements can they be seated so that men occupy seats 1, 5, and 9 and women occupy seats 2 and 8?