Matt W

This page lists questions and answers that were posted by visitors named Matt W.

Questions

The following questions were asked by visitors named Matt W.

Posted by Matt W on Tuesday, January 4, 2011 at 3:17pm. Calculate amount of energy needed to completely vaporize a 50g piece of 20 degree C silver melting point 1064 C L(f) = 64KJ/Kg Boiling point 2856C L(v) = 1645 KJ/Kg c= 0.13KJ/Kg degrees C I'm thinkin...

I did this problem last night with Damon's help and I think it's correct at the end of the is-could you please check it? Calculate amount of energy needed to completely vaporize a 50g piece of 20 degree C silver melting point 1064 C L(f) = 64KJ/Kg Boiling...

Answers

The following answers were posted by visitors named Matt W.

So if I did the corrections, then it would equal 18.434 and the second calculation would equal 6.786 .18434/.06786=.270 KJ Correct, Better or still wrong

a= 1044 * .13 * .05 = 6.786 b= 64 * .05 = 3.2 c= 1792 * .13*.05 = 11.648 d= 1645 * .05 =82. 25 6.786 + 3.2 + 11.648 + 82.25 = 103.884 Where did you get this formula, please?