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Describe the ionic strength and the activity coefficient of a solution that is 0.04M FeSO4, (Hint might require to use the Debye-Huckel equation)
A uniform beam of 1220 N is joined to a vertical wall at one end and is supported through a cable at the other end. A W = 1850 N crate suspends from the far end of the beam. (i) Compute the magnitud
Determine the minimum value for the coefficient of static friction µ s in such a way that the cylinder rolls without slipping down the incline plane? Represent your answer in terms of M, R, g,
Assume that a steel of euctoid composition is cooled to 675 degrees Celsius from the 760 degrees Celsius in less than the 0.5 s and held at this temperature.
An 83 kg running back moving at a 4.0 m/s forms a perfectly inelastic collision having a 110 kg linebacker who is primarily at rest. Determine the speed of the players just after their collision?
The airplane velocity of 640km/h at 250 degrees and the wind velocity of 80km/h from west. Find new speed and in what direction (degrees is it heading)? Illustrate diagram on x/y plane.
Describe the molarity of a solution prepared by mixing the 300 mL of a 0.250 M solution of a sulphuric acid with the 700 mL of a 6.00 M solution of sulphuric acid?
The cord's un-stretched length is around 30.0 m. Supposing that the bungee cord follows Hooke's law when it stretches; determine its spring constant.
Discuss how much energy can be released from converting one neutron from the mass to energy? Where the mass of one neutron is 1.01 amu, and the 1.00 g = 6.02 x 10e23 amu.
Assume that 25.00 mL of 0.100 molar N are titrated with 0.100 molar X and that the pH of the solution is maintained at the1.00 throughout the course of the titration.
The temperature increases from 297.65 K to 305.04 K. Determine the amount of heat released from the reaction. A sample which is having 2.16 g of caffeine (C8H10N4O2) burns in a constant-volume calor
Front sprocket has the radius of 7 inches. How fast do you require to pedal (in revolutions per minute) to get the speed of 20 mph?
Calculate the pH and OH- ion molar concentrations when the molar concentration of concentrated hydrochloric acid is12.1M.
Let, consider a motorcycle as it travels close to the bottom of a loop. If it is at the bottom, the normal force on the motor cycle is three times its weight. When the speed of the motorcycle is 20m
Assuming that a sugar-coated cereal contains 23.0% sugar and no other energy source, what mass of cereal will provide enough energy to walk the 2.0 km?
A handball of 0.060 kg is thrown straight in the direction of a wall having a speed of 10 m/s. It rebounds straight backward at a speed of 9.2 m/s. (i) Determine what impulse is applied on the wall?
If the pressure of the helium is 44.0 torr, and the nitrogen 615 torr, determine the pressure of the oxygen in the tank? A diver's scuba tank contains a mixture of nitrogen, oxygen and helium at a
A sample containing potassium chloride and inert material was analyzed by the Mohr method. A portion of the solid weighing 0.2500g was dissolved and titrated with the 0.07575 M AgNO3 solution to a b
Assume that for the dose of 10 milligrams, amount A(t) remaining in body t hours later is provided by A(t)=10(0.8)t and that for drug to be effective.
If this sample is titrated with acid, it is found that 20.10 mL of0.5010 M HCl are required to reach the endpoint. A sample of mixed carbonates, SrCO3 (147.63 g/mol) and Li2CO3 (73.89 g/mo
Discuss what would be the final concentration of hydroxide ion if the 50.0 ml of 0.15 m Ca (OH)2 solution is mixed with the 25.0 ml of 0.30 m HBr solution?
How is the heat of dissolution of the salt NH4Cl(s) related to the hydration energy of NH4+(g) plus X- (g) and the lattice energy of NH4Cl(s)? Illustrate a Born-Haber cycle and then summarize it
The solution gives an absorbance of 0.102 at 227 nm using a 1.0 cm cell. A 0.00062 g sample of benzene (C6H6) is dissolved in 200.0 mL of water.
Assume also that, after two and a half years, amount of money in account is $1401. Determine interest rate per year. Write the answer as the percentage.
Determine the concentration of ammonia NH3, which is necessary to initiate the precipitation of Zn(OH)2 from the 3.2x10^-3 M ZnSO4.