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F2O3 is added to Al. Potassium chlorate, sugar are added attop of this, followed by few drops of concentrated sulfuric acid tostart this very exothermic reaction. at the end aluminum has reduced iro
Accordin to this model, when will the population of the country reach a) 302 million people? b)372 million people? Give the year as an answer for a and b.
A 0.70 kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15 m. Determine: a) the velocity when it passes the equilibrium point
The student determined that the mass lost by the same was 1.8053. What was the percent water in the original hydrated sample? Show calculation setup
What could this substance have been? And what must have been contaminating the water in the first place to produce this by reacting with bicarbonate of soda?
Two resistors are wired in series. The second resistor has twice the resistance as the first. Current passes through the combination. Compared to the current through the first resistor, the current
Construct a model that gives the concentration C of the brine after boiling it. (Let x represent the number of liters of water that Sarah boiled off.)
2NaHCO3 at equilibrium Na2CO3 +CO2 + H2O Kp= 0.23 at 100 degreesC. If a sample of NaHCO3 is placed in an evacuated flaskand allowed to achieve equilibrium at 100 degree
A 15 g bullet is fired into the bob of a ballistic pendulum of mass 1.8 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The length of the pendulum
Consider the reaction N2 + O2 at equilibriumwith 2NO, for which the Kc =.10 at 2000 degrees C.Starting with the initial concentrations of .040 M of N2and .040 M of O2 determine the
(a) If the two cars collide and stick together their speed just after the collision is (b) What fraction of the initial kinetic energy of the cars is lost during this collision?
The reaction is first order. In an experiment, the initial concentration of cyclobutane was 0.00105M. After heating at 450°C for 455 s, this was reduced to 0.00083 M.
A 2.7-kg block is traveling to the right (the +x direction) at 5.1 m/s, and a second 2.7-kg block is traveling to the left at 1.8 m/s. (a) Find the total kinetic energy of the two blocks.
For the given cost function C(x) = 16\sqrt{x}+{x^2}/{274625} find the marginal cost at the production level 1700. The production level that will minimize the average cost.
Similarly, one additional unit will be occupied for each 2 dollar decrease in rent. What rent should the manager charge to maximize revenue?
A 1600 kg car is moving westward with a speed of 20 m/s, and a 2800 kg truck is traveling east with a speed of 14 m/s. Find the velocity of the center of mass of the system. (Take east to be the pos
He wants to mix 100 pounds of caramels in with chocolates and sell the mixture at $8 per pound. How many pounds of chocolates must he add to the mix to achieve this?
Assume that a 50-kg skater, on level ice, has built up her speed to 30 km/h. How far will she coast beforethe sliding friction dissipates her energy? (Kinetic energy =1/2 mv2) (b) How does the dista
If the angle of depression from the person's eyes to the wreck is 32 degrees, how far away is the accident from the base of the tower?
IF the bug falls from a height of 200 m find the speed with which the bug hits the ground if there is no air resistance.
If CH4 gas and C4H8 gas are released simultaneously at the left and right ends respectively of a 50.0 cm long glass tube, at what distance from the left end of the tube will they meet?
A 60.0 ohm resistor is connected in parallel with a 120.0 ohm resistor. This parallel group is connected in series with a 20.0 ohm resistor. The total combination is connected across a 15.0-V batter
In the diffusion of HCl and NH3, does the first appearance of white smoke indicate the first contact of the NH3 and HCl molecules? If the answer is no, how will it affect the calculated value of the
Find the quadratic function satisfying the given conditions. The axis of symmetry is the line x=1. The y-intercept is 1. There is only one x-intercept.
Two positive charges = = 2.0 are located at = 0, = 0.30 and = 0, = -0.30 , respectively. Third point charge = 4.0 is located at = 0.40 , = 0.What is the net force ((a)magnitude and (b)direction) on