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If the absolute temperature of a gas is doubled, what happens to the root-mean-square speed of the molecules?
a) nothing
b)the new rms speed is 4 times the original rms speed
c)the new rms speed is 2 times the original rms speed
d) the new rms speed is 1.414 times the original rms speed
e) the new rms speed is 1/2 times the original rms speed
When a 0.250 gram sample was studied by combustion analysis, 0.451 grams of CO2 and 0.0617 grams of H2O was formed. Calculate the molecular formula.
What pH is required to start precipitation of Fe(OH)3 from a 0.110 M solution of FeCl3? Ksp of Fe(OH)3 = 4.0 10-29.
A current of 5.64 A is pass through a Ni(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 8.80 g of nickel
Kinoprene is an insect hormone. Derivatives of this type of compound have the potential of being highly selective, and non toxic (to us and non target animals) insectisides. Research in this area may bring about a new "green revolution",
what is the pH of the solution which results from mixing 25 ml of .3 M HF and 25 ml of .3 M NaOH at 25 degrees C
If toluene is an aromatic hydrocarbon, a compound composed of only C and H. If you burn 0.356 g of the compound and determine that it produces 1.22 g of CO2 and 0.286 g H2O, Find out the empirical formula of the compound.
Calculate the pH of a 0.17 M aqueous solution of ammonium chloride (NH4Cl) at 25°C. Assume that Kb for ammonia (NH3) is 1.8x10-5 at 25°C.
Draw (2R,3S)-2-bromo-3-phenylpentane in the conformation from which it is most likely to undergo E2 elimination to give 3-phenyl-2-pentene.
A 31 L tank contains a gas under a pressure of 617 atm. What volume would the gas occupy at the same temperature at 900 torr of pressure? Answer in units of L.
Compute the amount of heat liberated when 6.07 g of n-octane is burned completely with excess oxygen to form carbon dioxide and liquid water.
How many molecules of triclosan are in a tube of toothpaste?
How many micrograms are present in 2.3469 g? 1g= 1x10^6 micrograms. Please show your work and use significant figures in the answer.
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