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Author Question: Which contains more moles of material: 80 grams of helium gas (He, having atomic weight 4.0 g/mol) ... (Read 99 times)

c0205847

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on: Jul 29, 2018
Which contains more moles of material: 80 grams of helium gas (He, having atomic weight 4.0 g/mol) or 400 grams of argon gas (Ar, having atomic weight 40 g/mol)?
 
  A) helium
  B) argon
  C) Both contain the same number of moles.

Question 2

When a vapor condenses,
 
  A) the temperature of the substance increases.
  B) the temperature of the substance decreases.
  C) heat energy leaves the substance.
  D) heat energy enters the substance.


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Sweetkitty24130

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: C


c0205847

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Reply 2 on: Jul 29, 2018
Wow, this really help

Kedrick2014

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Reply 3 on: Yesterday
Excellent

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