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Author Question: Calculate the amount of heat (in kJ) required to raise the temperature of a 79.0 g sample of ethanol ... (Read 129 times)

theo

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on: Aug 27, 2018
Calculate the amount of heat (in kJ) required to raise the temperature of a 79.0 g sample of ethanol from 298.0 K to 385.0 K. The specific heat capacity of ethanol is 2.42 J/gC.
 
  A) 57.0 kJ
  B) 16.6 kJ
  C) 73.6 kJ
  D) 28.4 kJ
  E) 12.9 kJ

Question 2

Determine the number of grams H2 formed when 250.0 mL of 0.743 M HCl solution reacts with 3.41  1023 atoms of Fe according to the following reaction. 2 HCl(aq) + Fe(s)  H2(g) + FeCl2(aq)
 
  A) 0.374 g
  B) 1.33 g
  C) 1.14 g
  D) 0.187 g
  E) 1.51 g

Question 3

How many centimeters are there in one kilometer?
 
  A) 105 cm
  B) 102 cm
  C) 101 cm
  D) 10-2 cm
  E) 10-5 cm


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joshbk44

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

B

Answer to Question 2

D

Answer to Question 3

A


theo

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Reply #2 on: Aug 27, 2018
TY


joshbk44

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Reply #3 on: Aug 27, 2018
You're welcome


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