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Author Question: For the freezing of liquid bromine, Br2, at a given temperature and pressure, A) H is negative ... (Read 88 times)

berenicecastro

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For the freezing of liquid bromine, Br2, at a given temperature and pressure,
 
  A) H is negative and S is negative.
  B) H is negative and S is positive.
  C) H is positive and S is negative.
  D) H is positive and S is positive.

Question 2

The density of ethanol, C2H5OH, is 0.789 g/mL. How many milliliters of ethanol are needed to produce 10.0 g of CO2 according to the following chemical equation? C2H5OH(l) + 3 O2(g)  2 CO2(g) + 3 H2O(l)
 
  A) 4.12 mL
  B) 6.63 mL
  C) 13.2 mL
  D) 26.5 mL

Question 3

The acidic water of a lake (V = 4  108 L) must be neutralized with lime, CaO. It will require a minimum of ______ grams of lime to adjust the pH from 5.6 to 6.5.
 
  A) 2  104
  B) 5  104
  C) 1  105
  D) 3  104
  E) 5


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jasonq

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berenicecastro

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Reply 2 on: Aug 27, 2018
Wow, this really help


31809pancho

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Reply 3 on: Yesterday
Excellent

 

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