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Author Question: A 0.286-g sample of gas occupies 125 mL at 60. cm of Hg and 25C. What is the molar mass of the gas? ... (Read 141 times)

lilldybug07

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on: Aug 27, 2018
A 0.286-g sample of gas occupies 125 mL at 60. cm of Hg and 25C. What is the molar mass of the gas?
 
  A) 5.9 g/mol
  B) 44 g/mol
  C) 59 g/mol
  D) 71 g/mol

Question 2

A solution is prepared by adding 40.00 g of lactose (milk sugar) to 110.0 g of water at 55 C The partial pressure of water above the solution is ________ torr.
 
  The vapor pressure of pure water at 55 C is 118.0 torr. The MW of lactose is 342.3 g/mol.
  A) 2.216
  B) 125.5
  C) 225.9
  D) 115.8
  E) 86.5


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fwbard

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Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

D


lilldybug07

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Reply 2 on: Aug 27, 2018
Gracias!

kswal303

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Reply 3 on: Yesterday
Excellent

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