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anonymous
 one year ago
PLEASE HELP!!!
A 19.4 gram sample of gas is found to have a volume of 1.3 liters at 282 K and 1.2 atm. What is the molar mass of this gas? Show all of the work used to solve this problem.
anonymous
 one year ago
PLEASE HELP!!! A 19.4 gram sample of gas is found to have a volume of 1.3 liters at 282 K and 1.2 atm. What is the molar mass of this gas? Show all of the work used to solve this problem.

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arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3Use PV=nRT

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3here T=282 V=1.82 P=1.2 R=0.0821 and n=m/M we need M, so put m=19.4 to get M

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3It should look1.2*1.82=(19.4/M)*0.0821*282

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3@fenispart Got it?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@arindameducationusc Yeah I understand now. I got 289.55

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@arindameducationusc I also need help with one last one: A solution is made by dissolving 23.5 grams of glucose (C6H12O6) in .245 kilograms of water. If the molal freezing point constant for water (Kf) is 1.86 °C/m, what is the resulting Δtf of the solution? Show all the steps taken to solve this problem.

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3Didn't I give you the formula last time? Okay I will show again...

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3\[\Delta{T}=K _{f}* W _{b}*1000/ Mw _{b}*W _{a}\] Here Mwb= 180 because C6H12O6 6*12+12*1+6*1=180

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3convert .245 kg to gram....

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3you get 245 gram (This is Wa)

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.31kg=1000grams

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3and Wb is 19.4, and the rest is given in question... Got it?

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3@fenispart Can you solve now?

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3No not always, but for this question 19.4 is Wb

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3hmmmm....Its given in the question.... READ THE QUESTION

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait are we talking about the first question or the second one?

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3oops... my bad...... its second question and Wb is 23.5.

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3sorry about that

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.323.5 is given... I guess now you got it. Both questions are about gas so.... I made a mistake........

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3Can you do now? @fenispart

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How do I find Kf? @arindameducationusc

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3Kf is given 1.86

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I got 0.991 @arindameducationusc

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3Total answer?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@arindameducationusc

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3Yes your answer is correct....

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.3I just checked it... Good job! Bravo!
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