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TrialTrial 2Initial water level in buret; mL Final water level in buret mL Volume of water displaced and mL 0z collected Room temperature; % Barometric pressure, mm...

Question

TrialTrial 2Initial water level in buret; mL Final water level in buret mL Volume of water displaced and mL 0z collected Room temperature; % Barometric pressure, mm Hg Vapor Pressure of Water' , mmHg Pressure of 0z gas2ay Aih 3es 3 JA Smt LI 22 224 7smyL As0814 JLLiu L44 400 ( 552 55lationsTrialTrial 2Moles Oz collected-Moles HzOz in sample g HzOz in sample g sample (density 1.0 gmL)Exactly J00 mL used) % HzOz of sample Avg: % HzOz of sampleAppendix E ulate from PV = nRT ed on Equation 5 ou

Trial Trial 2 Initial water level in buret; mL Final water level in buret mL Volume of water displaced and mL 0z collected Room temperature; % Barometric pressure, mm Hg Vapor Pressure of Water' , mmHg Pressure of 0z gas 2ay Aih 3es 3 JA Smt LI 22 224 7smyL As0814 JLLiu L44 400 ( 552 55 lations Trial Trial 2 Moles Oz collected- Moles HzOz in sample g HzOz in sample g sample (density 1.0 gmL)Exactly J00 mL used) % HzOz of sample Avg: % HzOz of sample Appendix E ulate from PV = nRT ed on Equation 5 our caleulations in Excel and submit your excel sheet with your lab report. The Exce late that you are to use can be found on BlackBoard. 127



Answers

A highly volatile liquid was allowed to vaporize completely into a $250 .-\mathrm{mL}$ flask immersed in boiling water. From the following data, calculate the molecular weight (in amu per molecule) of the liquid. Mass of empty flask $=65.347 \mathrm{~g} ;$ mass of flask filled with water at room temperature $=327.4 \mathrm{~g} ;$ mass of flask and condensed liquid $=65.739 \mathrm{~g} ;$ atmospheric pressure $=743.3$ torr; temperature of boiling water $=99.8^{\circ} \mathrm{C} ;$ density of water at room temperature $=0.997 \mathrm{~g} / \mathrm{mL}$.

According to dalton's law, partial pressure. I can write about your total edge B H two plus B H 20 Now calculating the value of ph two which is equal to 745 points to mm H. G. The changing 80 in 80 M. I just divide by 7 60 to change the value in A T. M. So honest calculation I get the Value age .980 80 M. Now using the ideal guest law that DG T V is equal to an arty. So the value of and can be managed tv by RT. So I'll bring it further. I can write the Value of number of moles of H two addict 0.980 multiplication 0.125 pleated by .08- one multiplication 298 Calvin. Which is equal to 0.0050 Moon. Now finding the volume. So here I can write the expression for volume add NRT by P Which is equal to 0.005 multiplication by 0.8 to one multiplication, 310 Calvin by 0.980 80 M, which is equal to 0.135 pleated, which is equal to 135 ml, as our final volume mob dry gas.

Hi guys live. So problem. I find 134. We need to find some other mess off the guests. It's given that mess off. Empty baskets 65.347 gram and Menzel, The flask filled with water is three 27.4 gram. So then Ms O wanted these 3 27.4 minus 65.347 grand, which is due 62.1 grams. Therefore, the rolling off the plastic doing mass off water divided right, the density off watching, which is to 62.1 grams, divided by 0.997 Grandpa Milliliters in front of all the amount of class case to 62.9 millimeter Mum, the mess of the class with the unknown liquid ese 65.7 39 grand. Therefore, myself, the unknown liquid. He's 65 points 739 minus 65.347 grams, which gives us A 0.39 to Graham. The temperature of the system. Given these 99.8 dissensions only cancan wanted to give him a skin, which gives us 3 72.8 the fishing given ese 101 too. In the basket lives Dunwoody do most very Christian by dividing it with 101.3 to 5, he keeps a 0.999 Hey, Jim, no! In this condition, the unknown guest occupies the whole container. Therefore, the world of the bears should be 2 62.9 I really need you all to 62.9 in the 1st 3 And the mess off the guests. We can't believe it. He's zero point 3 92 cream and we know when a mess A grant to mass divided by a number of months. Oh, number of Morse. Is it gonna do, Nancy? Very, very Momus. No. We can use the ideal gas. A convention. It is goingto in D. Oh, baby is going to and using the secretion we company to that one of us I need to see inside. It's inside the values that we know Massive warned. That's constant use Airplanes. Hail storm. No, your son Give me your son In village, it is 72 point do added by the pressure, which is 0.999 It's a dream And the volume please. 2 62.9 to 10 in your 1st 3 leader. Let's check on the You know this, Lieutenant. Everyone will be gone. It was very pressure will be gone. So we elected Graham and Union Verse one. These gives us 45.7 Grandpa which is someone or myself down. And then? Yes.

All right for Question 56 were asked to use Appendix B, which lists the vapor pressure of water at various external pressures. And you first need to plot that data with pressure versus temperature. And this is an example of what that plot would look like when you plot the pressure on the why access end the temperature on the X axis were then supposed to use that plot to, um, determine estimate the vapor pressure of water at body temperature, which is approximately 37 degrees Celsius. So that should be about halfway. There should be 30. That's about 35. So we're looking just a little bit above that, and you come over. I'm about halfway in this area, so between zero and 100. So for a I would estimate that at approximately that at 37 degrees Celsius, we're looking at approximately 50. Tour pressure for Part B, says um, explain the significance of the data point at 760 tour 100 degrees Celsius. So 760 tour. That's it, the same as one atmosphere and one atmosphere is considered normal pressure and 100 degrees Celsius that point right there at the 7 60 the 100 degrees Celsius. That is your normal boiling point, the normal boiling point of water. The normal boiling point is the point on the graph for vapor pressure versus temperature, at which the pressure is the normal pressure, which is one atmosphere or 760 Tour um, questions. See says the city, at an altitude of 5000 feet above sea level has a barometric pressure of 633 tour to what temperature would they have to heat water to boil in this city? So if so, the boiling point is this line. And so if we come to instead of normal pressure at 760 tour there at 633 tour. So they're somewhere about 1/3 of the way between six and 700. So we're looking here, and if we come down or somewhere in here, we're at the approximately at a 95 degrees Celsius for the boiling point at that pressure question, D says, a city with an altitude of 500 feet below sea level has a pressure of approximately 774 tour, and it wants to know what water would boil. Edit that at that pressure. So it's 774. Tour were about 3/4 of the way up here. We're just over this 100 line. So we're looking at just somewhere in the vicinity of 101 degrees Celsius, maybe even a little bit less.

Hi, everyone here we have to find the air density. The evidence street you did. Ideal guess. Equation off the state on estimate uncertainty in calculated value. Give it here at a standard condition. Pressure is 29.9 inch off. Mercury temperature is 59 degree Fahrenheit. Uncertainty and pressure, plus minus 0.1 inch off mercury and in temperature. It is, unless minus 0.5 degrees Fahrenheit. Like I see it, density is to find that, by ideal gasification be upon rt. Secure the well. £14.7 force upon inches square found 12 degree, 53.3 feet pound, foot's and burn upon 519 are 1 44 and square. But fetus square uncertainty industry is given by he upon rope. The P Dale The route upon Dale P and Tow Uncertainty Impression Square plus T upon the rope Data row upon the 30 Uncertainty in measurement off temperature, It's quit. Hold the power. How be upon rope? Data Row upon Delta P is called toe already. One on our sent 20 in b is bless minus point of one upon 29.9. That is bless minus 0.334% de upon a rule Delta rue upon day 30 it's called Toti. Upon group minus p upon r T squared equal to minus be upon rule rt that is my husband and answered Etienne Temperature measurement 0.5 upon 4 69 plus 59 So it becomes plus minus 0.0 963% 10th consent NT In measurement off density is plus minus 0.334% is square but less minus 0.9 63% is square Although the power half so you will get bless minus quite 348%. Okay, that's all for this problem. Thanks for watching it.


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