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When 2.7 ml of pure acetic acid are needed for a reaction, but only a 7% solution of acetic acid is available, measurement the dilution factor for 7% solution and use this factor to calcula
A sample which is having 70g of sodium is allowed to react totally with the sulphur to form a sulphide that weighs 6.30g.
You are standing on equator of earth (radius 3960 miles). Determine linear and angular speed? The auto tire has radius 12 inches. If you are driving 65 mph, find angular speed in rad/sec and angular s
When the student's experimentally determined that 0.0201 moles of sulphur combined with 0.0399 moles of sodium, calculate the empirical formula of the compound produced in this exercise?
Calculate the coefficients of the Antoine equation based off of experimental data in the form of a vapor pressure and the corresponding temperature.
A and B form and ideal solution. The vapor pressure of pure A is zero and the vapor pressure of pure B at 25oC is 100.00 torr. The vapor pressure at 25oC of a solution consisting of 1.00 g of A and 10
Determine the pressure required to melt ice into the liquid water at 253K. The densities of liquid water and ice are 1.000 and 0.915 gmcm-3, respectively, and the heat of fusion Δfus Ho =
Liberate the free 4-nitroniline by slowly adding concentrated ammonia solution with stirring until the mixture is basic. Write down the appropriate equation and why is it necessary to add ammonia s
Determine the energy difference between the most stable conformation of cis-1,3-dimethylcyclohexane and the least stable chair conformation of trans-1,4-dimethylcyclohexane by using a value o
How long does it take restaurant to rotate through four radians? How far does a person sitting by the window move in 100 minutes if radius of restaurant is 21 meters?
A lead atom has a mass of 3.4 x 10 ^-22 gram. Determine the numbers of lead atoms are in a cube of lead that has a volume of 2.00 cm3 if the density of lead is 11.3 g/cm3
Isopentylacetate, C7H14O2, the compound responsible for the scent of ripe bananas, can be formed commercially. Interestingly, bees release about 1.40μg of this compound when they sting, in order
Terry todl you that amount of tip he left and amount he paid in tax were within 1$ of each other. Compute possible values for before tax amount on bill.
The motion of a particle is expressed by the relation x = 5/3t^3 - 5/2t^2 - 30t + 8x, where x and t are defined in feet and seconds, respectfully. Find out the time, the position and the acceleratio
When an object is suspending from the mirror of the car by a string, find the angle which the string makes with the horizontal as the car drives around the curve.
At a point outside the sphere at a radial distance of 19.0 cm from the surface, the electric potential is 130 V. (The potential is zero much far from the sphere.) Determine the radius of the sphere,
At the distance of 1 meter along ground from point where arch touches ground, arch is 4.55 meters high. Determine the equation to explain arch.
The electric field at the surface of the bigger sphere is 630 kV/m. Determine the surface charge density on each and every sphere.
A wire of 73.4 cm long carries a current of 0.520 A in the positive direction of an x-axis via a magnetic field having an x component of zero, a y component of 0.000370 T, and a z component of 0.013
A beam of light is incident on the glass plate of n = 1.50 in air and the reflected ray is totally polarized. Determine the angle of refraction of the beam?
The airplane having a speed of 150 km/h heads directly north while a west wind blows at the constant speed of 30 km/h. Determine how far does the plane travel throughout the 4-hour flight?
At what angle should light be incident on the surface of a diamond submerged in water when the reflected light is to be fully polarized? Determine what would the ray diagram appear like?
(i) Explain how far from the van is the object in reality positioned, and (b) determine how tall is the object?
Sketch the ray diagram, to scale, of an object positioned at distance x in front of a lens so that the magnification is +2. Find out the focal length in terms of x. Find out the position, in terms o
When the ball is in contact with the bat for a time of 1.15 ms, determine the average force exerted on the ball through the bat?