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How many grams of water are formed when 17.5 g of oxygen reacts with nitrogen?(hint: you need to write a balancedeqn.
How long does it take for an investment to double in value if its invested at 11% compounded monthly and compunded continuously?
Two parallel metal plates have area A = 255 cm2 and are separated by l = 0.50cm. They have a potential difference of 0.25 V. Find the numerical value of the electric field. What are the charge dens
How many grams of calcium are required to react with 1.55g of water to produce calcium hydroxide and hydrogengas?
If the solenoid current increases steadily from 0 to 11A in 2.1 seconds, find the induced current in the coil.
If the marginal revenue for the product is given by the equation MR=80x what is the profit generated from the production of 8 units of this product?
Seawater contains 8.0 x 10-1 cg of the elementstrontium per kg of seawater. Assuming all of the strontium couldbe recovered, how many grams of strontium can be recovered from acubic meter of se
Find the equillibrium point, the consumer's surplus, and the producer's surplus if the demand function is p(x)=f(x)=200-.4x^2.
Consider light that is refracted by a prism shaped like an equilateral triangle. The incident ray is parallel with the prism's base. What is the total deflection of the ray, given that the index of
Determine the tax per item that will maximize the total tax revenue and use it to compute the maximum total tax revenue possible.
A 1.2 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive direction of an x axis is applied to the block. The force is given by F(x) = (2.5 -
A rock contains .37 mg of Pb-206 and .95 mg of U-238. The half lifeof the decay series U-238 to Pb-206 is 4.5 X 109years.Assuming no Pb-206 was present in the rock initially, how old is the rock?
Use the information developed in the notes for formic acid as a guide to determine the concentration of [H+] and pH of 0.1N and 1N solutions of acetic acid.
a) what is the average acceleration of the bullet thru the board? b) what is the total time the bullet is in contact with the board? c) What thickness of the board would it take to stop the bullet,
Given one focus at (4,2) and the equation of one directrix as y=4, determine the equation of the ellipse with an eccentricity of 1/2.
Calculate the total energy of the child-stick-Earth system, taking both gravitational and elastic potential energies as zero for x = 0.
The solubility product ksp for mn(IO3)2 is 4.4 x 10^-7. Determine maxiumum solubility of this in moles per liter for mn(IO3)2.
A spring with a mass on the end of it hangs in equilibrium a distance of 0.4200 m above the floor. The mass is pulled down a distance 0.0600m below the original position, released, and allowed to os
A solution is made by mixing 200 mL of 5.9x10(-4)M CuCl with 150 mL of 4.3x10(-3)M NaBr. Will a CuBr precipitate form? (K(sp)=4.2x10(-8)
Two long parallel wires 5.50 cm apart carry 15.5 A currents in the same direction. Determine the magnetic field strength at a point 12.0 cm from one wire and 13.2 cm from the other.
What mass of ammonium chloride should be added to 2.55 L of a 0.155 M NH3 in order to obtain a buffer with a pH of 9.55?
Given the coordinates of one focus as (4,2) and the equation of one directrix as y=4, determine the equation of the ellipse with an eccentricity of ½.
Calculate the number of moles of Cl atoms in1.20×1024 formula units of magnesium chloride,MgCl2. Express your answer numerically in moles Cl.
A concave mirror has a focal length of 34.1 cm. The distance between an object and its image is 52.8 cm. Find (a) the object and (b) the image distance assuming that the object lies beyond the cente
An important component of blood is the buffer combination of bicarbonate ion and carbonic acid. Consider blood with a pH of7.42.