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Question- The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. But given the same kinetic energies, a lighter molecule will move faster than a heavier molecule. Where R=8.314 J/(mol•K) and ? is molar mass in kilograms per mole. Note that a joule is the same as a kg•m2/s2. What is the rms speed of O2 molecules at 357 K? What is the rms speed of He atoms at 357 K?
Depict your all calculation in detail so I can understand the solution thoroughly
Order these five gases that occur in the troposphere from most abundant to least abundant: Rn, CO2, CO, N2, Ar and O2.
What is the pressure of a mixture of helium, nitrogen and oxygen if their partial pressures are 600 mmHg, 150mmHg and 102mmHg
Construct the lewis structure model for the ionic compound potassium chloride using the following steps.
What wieght of glycine (pka1=2.4, pka2=9.6) and what volume of 0.5 N(normality) HCl would be necessary to make 100 mL of 0.2 M buffer pH 2.4?
To what volume must 558 mL of 13 M Ca(OH)2 solution be diluted to make a 3 M Ca(OH)2 solution?
Use qualitative molecular orbital theory to explain why Na2O2 is diamagnetic and KO2 is paramagnetic (use the appropriate diagram from the notes. Use MO to explain the nature of the oxygen-oxygen bond in the complex anions). What is the oxygen-oxy..
What mass of NaH2PO4 must be added to 1.20 L of 0.20 M Na2HPO4 to make a buffer solution whose pH=6.90? pKa2(H3PO4)=7.21.
In the preparation of the esters given in this reaction, the reaction product is extracted with 5% sodium bicarbonate solution (NaHCO3)in the isolation step. Why? What gas is evolved during this washing step? Write a balanced equation for the reac..
A 4.5 g nugget of gold absorbed 276 j of heat. What was the final temperature of the gold if the initial temperature was 25 OC ? The specific heat of gold is 0.129 j/g OC.
The density of the metal is 8.785 g/cm3 and the specific heat of the metal is 0.425 J / g oC. If the metal foil absorbs 864.7 J of heat as its temperature changes from 21.32 oC to 34.80 oC, calculate the thickness of the metal foil in mm.
Use the hederson hasselbalch equation to calculate the number of moles and grams of monobasic sodium phosphate (NaH2PO4) and dibasic sodium ( Na2HPO4) necessary to make one liter of solution.
How much heat (in kJ}) is evolved in converting 1.00 {mol} of steam at 160.0C to ice at -55.0C? The heat capacity of steam is 2.01 {J}}/{{g.C}} and of ice is 2.09 {J}}/{{g.C}}.
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