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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
find the ph of the two equivalence points and the volume (ml) of 0.0414 M KOH needed to reach them in the titration of 17.3 mL of 0.130 M H2co3 (first equivalent point = ML KOH, and pH= )
What should the molar concentrations of benzoic acid and sodium benzoate be in a solution that is buffered at a pH of 4.55 and has a freezing point of -2.0 °C.
Calculate the wavelength (in picometers) associated with hydrogen atom moving at a speed of 3.13 x 10^3 cm/s
Consider the titration of 50.0 mL of 0.200 M HOCl by 0.200 M KOH for the next five questions (Ka for HOCl = 3.5 x 10-8). Calculate all pH values to two decimal places.
Categorize each phrase below as being relevant to ionic bonding, covalent bonding or metallic bonding. 1. electron transfer 2. Nonmetal with nonmetal 3. Alloy 4. separate molecules 5. metal with metal 6
How many milliliters of a 7.47 M LiOH solution are needed to neutralize 25.0 mL of a 2.87 M HBr solution
How many molecules would be contained in each of the following at the same temperature and pressure. A.) 5.0 L hydrogen
what type of solid phase would you use and what type of solvent would you select as an eluting solvent, to detect the biphenyl impurity?
The Reaction A->B+C is second order in A. When [A]0=0.100 M, the reaction is 20% complete in 53.7 minutes. calculate the value of the rate constant( in L/min mol)
an unknown liquid with boiling range of 179-181 C is insoluble in water, gives a blue green suspension with chromic acid and immediately forms a separate layer when shaken with Lucas' reagent.
How many grams of oxalic acid dihydrate are needed to react with 38.56 mL of a .2500M sodium hydroxide solution
what is the mass percent composition of aluminum in aluminum
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