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Describe a sound wave experience phenomenon that you have personally and identify the wave process (i.e. reflection, refraction, diffraction, interference) that caused the phenomenon.
Calculate the maximum mass of Be(s) (in grams) that can be deposited from BeCl2(l) melt by a current of 5.0 A that flows for 1.0 hour
what is the age of a bone fragment from an archaeological dig if the bone shows an average of 2.5 radioactive events
The indicator propyl red has Ka = 3.3 × 10-6. What would be the approximate pH range over which it would change color?
The compression ratio of today's cars is so much higher than in cars of years past. What is the major advantage of increasing the compression ratio?
If a 7.0 mL sample of vinegar was titrated to the stoichiometric equivalence point with 7.5 mL of 1.5M NaOH what is the mass percent of CH3COOH (acetic acid).
At a certain temperature, 893 K, Kp for the reaction, 2 H2S(g) 2 H2(g) + S2(g), is 5.26 x 105. Calculate the value of ?Go in kJ for the reaction at 893 K.
Describe four common, effective uses to which medieval society put human and animal excrement (feces and urine), with reference to the nitrates contained therei
Problem- Propanoic acid (CH3CH2COOH or HPr) is an organic acid whose salts are used to retard mold growths in foods. What is the [H3O+] of 0.10 M HPr? Ka=1.3 x 10^-5.
What final temperature, in degrees Celsius, is needed to change the volume of the gas to each of the following, if P and n do not change
Problem- Q1) A gas occupies one litre under atmospheric pressure. What will be the volume of the same amount of gas under 750 mm of Hg at the same temperature
A certain plant material is known to contain mainly trimyristin and tripalmitin in approximately equal amounts. Tripalmitin, the structure of which you should look up in a reference source,
What are the Celsius temperatures of the following conditions? body temperature, ice freezing, water boiling, room temperature?
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