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Explain why there is a direct relationship between the concentration of a solution and a solution's absorbance of light
Why do difference solutions absorb specific wavelengths of light and not all wavelenghts of light?
Write the chemical formula for nickel nitrate.
how heavy in pounds is a gold bar at Fort Knox (dimensions of 7.0 in x 3 5/8 in x 1 3/4 inches? If the current price for gold is $1400 per troy ounce, how much is 1 bar of gold worth in ? (make sure you look up troy ounce!)
which of the following is not a general characteristic of amides?high boiling pointsintermolecular hydrogen bonds are
If you have 100 ml of pure water and add to it 10 ml of 2.0M HNO3, what will be the pH of the final solution
A student places 2.0 moles of methylamine in 500ml of water. what is the pH? the Kb of methylamine is 4.4x10^-4.
A sample of silver chromate (Ag2CrO4) has a mass of 24.7 g. (a) How many Ag+ ions are present? ions (b) How many CrO42- ions are present? ions (c) What is the mass in grams of one formula unit of silver chromate? g/formula unit
How many grams of Na2CO3 Standard must be used if the titration is expected to require 40 mL of 0.1 M HCl titrant?
Which of the compounds contain chiral centers? (you may choose more than one answer)
Consider a liquid with a vapor pressure of 200. torr at 20.0 oC and a vapor pressure of 400. torr at 50.0 oC. What is the closest value to the normal boiling point of this liquid. A. 357 oC B. 295 oC C. 22.0 oC D. 18.2 oC E. 83.8 oC
Balance the following full redox reactions using the lowest integer coefficients, in basic conditions. NiO2(s) + Zn(s) ? Ni(OH)2(s) + ZnO22?(aq)
A solution contains 0.35 mol of isopropanol (C3H7OH) dissolved in 0.85 mol of H2O. What is the molarity of this solution
What is the equilibrium concentration of hydronium ion in a solution that is 0.0877 M in HX and 0.240 M in X1- ion?
calculate the pH of the solution that results when 40.0 mL of 0.100 M NH3 is mixed with 20.0 mL of 0.100 M HCl solution.
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