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Author Question: According to the following reaction, how much energy is evolved during the reaction of 2.50 L B2H6 ... (Read 254 times)

MirandaLo

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on: Aug 27, 2018
According to the following reaction, how much energy is evolved during the reaction of 2.50 L B2H6 and 5.65 L Cl2 (Both gases are initially at STP)? The molar mass of B2H6 is 27.67 g/mol.
 
  B2H6(g) + 6 Cl2(g)  2 BCl3(g) + 6 HCl(g) Hrxn = -1396 kJ
 
  A) 58.7 kJ
  B) 156 kJ
  C) 215 kJ
  D) 352 kJ
  E) 508 kJ

Question 2

In a density determination, a student measured 11.46 mL of a liquid. How many liters is this?
 
  A) 11,460 L
  B) 1.146 L
  C) 0.1146 L
  D) 0.01146 L
  E) 1.146  L


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ynlevi

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

A

Answer to Question 2

D


MirandaLo

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Reply 2 on: Aug 27, 2018
Excellent

cam1229

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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