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A backyard swimming pool holds 190 cubic yards ({{yd}}3) of water. What is the weight of the water in pounds?
Write an empirical formula for each of the following. (using the format CO2 for CO2.) (a) Ethylene glycol, car antifreeze, molecular formula C2H6O2
find the molarity of an unknown NaOH solution if 0.5536 g of the KHP required 37.00 mL of a NaOH solution.
base catalyzed reaction of vanillin with acetic anhydride? They produce slightly different products, but how and why
140 mL of a .175 M aqueous solution of NH3 is titrated with a .106 M solution of HCl. (NH4+ Ka=5.56x10^-10)
If 3.25 L of ammonia react with an excess of oxygen to form nitrogen monoxide and water steam, what volume of water steam will be produced? The pressure and temperature stay constant. A. 2.04 L B. 2.17 L C. 3.33 L D. 4.14 L E. 4.88 L e is righ one
In writing a lab report, a hypothesis is needed. The experiment called for a titration HCl solution of unknown molarity with TRIS base. Bromocresol green was used as an indicator.
What is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number n=5
The normal range for the carbonyl group of a carboxylic acid in the IR spectrum is 1725 - 1700 cm-1. Why is the carbonyl group of benzoic acid appear at 1696 cm-1
A compound of potassium had the following percentage composition: K 44.90%; H 0.5787%; P 17.78%. The rest was oxygen. Calculate the empirical formula of this compound
An aqueous CaCl2 solution has a vapor pressure of 82.2 mmHg at 50 degrees C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent
Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change.
Work function of chromium metal is 4.37 eV. What is the wavelength of radiation that must be supplied to metallic chromium to release and electron with kinetic energy of 2.05*10^-18 J
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