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When teachers or administrators notify authorities about possible abuse or neglect, they must also inform the individual or family suspected of this behavior.
for a certain gas that contains only carbon and hydrogen the masspercentage of carbon is known to be 85.62. it is
Calculate the energy per photon of electromagnetic radiation, for a photon having a frequency of 5.16 X 10^19 Hz (h = 6.626x10^-34 J s):
Compute the maximum number of grams of NH3 that can be produced by the reaction of N2 with 3.00 g H2. Reaction: N2(g) + 3 H2(g) ? 2 NH3(g)
a flask of one litre is filled with 1.30 grams of argon gas at the temperature ofnbsp 25 degrees celsius. a sample of
Calculate OH- for each of the following solutions, and indicate whether the solution is acidic, basic, or neutral. h+ = 2.7×10?3.
Question- Determine if HNO3 can dissolve each of the following metal samples. If so write the balance chemical reaction showing how the metal dissolves and determine the minimum volume of 6M HNO3 needed to completely dissolve the samples.
Determine the phase composition and temperature when equilibrium is reestablished?
The fluorescence of the diluted sample solution was found, by the working curve method, to correspond to a salicylate ion concentration of 4.80 x 10^-5 M. Calculate the % acetylsalicylic acid in the aspirin tablet.
a. added half the amount of benzaldehyde? b. forgot to add benzaldehyde? c. forgot to add acetone, but added a high (50%) concentration of sodium hydroxide? d. washed the product with large amounts of hot ethanol?
the barometer at an indoor pool reads 105 kpa. if the temperature in the room is 30 degrees Celsius, what is the pressure of the air
The point in the titration when buffering is least efficient occurs at the stoichiometric point, or equivalence point, in the reaction. This point is often called a point of inflection because there is a shift in the curvature from convex to conca..
A sample of argon gas occupies a certain volume at 14 degrees C. At what temperature would the volume of the gas be three times as big? Assume the pressure stays constant.
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