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A gas cylinder contains a mixture of He and Ne at STP. Which of the following quantities would have the largest magnitude?:
A) Root mean square speed of He
B) Average speed of Ne
C) Average speed of He
D) Most probable speed of He
E) Root mean square speed of Ne
a 3.46 liter sample of a gas was collected over water on a day when the temperature was 21 degrees celsiusand the
what concentration of nitrogen oxide is the rate 2.0x10^-6 mol/L-min and the bromine concentration one fourth of the nitrogen oxide concentration?
how does edta react with soap. i know it reacts with sodium by replacing some of the hydrogens of the hydroxyl groups
Keep in mind that it will be too thick and greasy to insert in a capillary tube. Also, remember that the melting point of vegetable oil is well below room temperature.
Magnesium oxide decomposes into magnesium and oxygen. If 12.09g of magnesium oxide decomposes to form 7.29g of magnesium, what mass of oxygen gas is also released in the reaction?
a. what are the energies of the n=1-7 levels? b. what is the energy difference between n=6 and n=7? c. what does this very approximate calculation compare with experimental values
Which is the equivalence-point pH if 25.0 mL HCOOH (1.8 x 10-4) requires 29.80 mL 0.3567 M NaOH to reach the equivalence point?
the boiling point of a solution containing 10.44 g of an unknown nonelectrolyte in 50.00 g of acetic acid is 159.2degc.
A mixture of CaCO3 and (NH4)2CO3 is 60.7% CO3 by mass. Find the mass percent of CaCO3 in the mixture.
If 200 g of water at 20 degrees celcius absorbs 41840 J of energy, what will its final temperature be
It is quickly degraded in the atmosphere though reaction with OH• and O3 to form non volatile species which then form particles. These latter ones are responsible for the haze.
the chromic acid test acetone, formaldehyde, propanal, 3-pentanone, acetophenone, and benzaldehyde
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