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Helium is the lightest noble gas component of air and xenon is the heaviest. Use R=8.314J(mol x K) and M in kg/ml.
a) find the rms speed of helium in 0 degree C and in 30 degree C
b) find the ratio of the rms speed of helium to that of xenon in 30 degree C
c) find the average kinetic energy per mole of He and Xe at 30 degrees C
Treatment of 1.385 g of an unknown metal M with an excess of aqueous HCl evolved a gas that was found to have a volume of 382.6 mL at 20.0 degree C and 755 mmHg pressure. What mass of MClx is formed
A 4.00 g sample of an aluminum-copperalloy reacts with excess hydrochloric acid. The 2.81 L of H2(g) produced is collected over water at a barometric pressure of 758.4 mmHg and 19°C. What is the mass percent of aluminum in the alloy
Use condensed structures to illustrate the 3 possible charged species and the one neurtral species that can exist in aqueous environments for the polar acidic acid of your choice. Indicate which conditions are present in each of the four drawings.
A 1.25g sample of ore containing iron pyrite (FeS2) was pulverized and ignited in air, converting the Fe2O3 and SO2. The Fe2O3 produced weighed 0.516g.
what is the equation for gypsum when it is heated below 220 degrees celsius and also when it is heated to red heat?
A 4.40 g piece of solid CO2( dry ice) is allowed to vaporize(change to gas) in a ballon. The final volume of balloon is 1.00 L at 300L. What is the pressure of the gas?
if the hindenburg held 2.3x105 meters cubed of hydrogen gas at 25degreees celsius and 1.0 atm what mass of hydrogen was
if 18.6 of 0.800 solution are needed to neutralize 5.00 of a household ammonia solution what is the molar concentration
1) A sample oxygen gas is collected over water at 25.0 C an a total pressure of 642 torr. The volume of the gas collected is 500.0 mL. what mass of oxygen is collected. the vapor pressure of water at 25.o C is 28.8 torr.
A solution was prepared by dissolving 0.450 g MgSO4 (FW=120.363g/mol) in 0.500L of water. A 50.0 mL aliquot of this solution consumed 37.60 mL of EDTA solution in a titration.
Write the balanced net ionic equations for the reactions that occur in each of the given cases as. Cr2(SO4)3(aq) + 3(NH4)2CO3 (aq) = Cr2(CO3)3 ( s) + 3(NH4)2SO4 ( aq).
Given that aprotic solvents are not practical for unimolecular processes (little if any reaction occurs via a unimolecular pathway) draw the skeletal structure of the major organic substitution product when (2S,6R)-2,6-dibromo-6-methyloctane is tr..
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