J.R. S. answered • 10/06/20
Tutor
5.0
(145)
Ph.D. in Biochemistry with an emphasis in Neurochemistry/Neuropharm
LOL...LOL...LOL
q = mC∆T (MEMORIZE THIS FORMULA)
q = heat = ?
m = mass = 701 mg (convert this to grams: 701 mg x 1 g/1000 mg = 0.701 g)
C = specific heat = 0.235 J/g/degree
∆T = change in temperature = 8.9 - (-0.8) = 9.7 degrees
q = (0.701 g)(0.235 J/g/degree)(9.7 degrees)
q = 1.5979 J = 2 J (to 1 sig. fig. because -0.8ºC has only 1 sig. fig.)
Also NOTE: the temperature scale (ºC or K) doesn't matter because we are using ∆T and a 1 degree change in Celsius is the same as a 1 degree change in K
Abigail E.
Instead of going "LOL" because I'm asking a similar question as my first question, you should be helping me respectfully. Also, your answer is wrong - it's 1.6 J. I think you may need to work on sig figs and remember the formula instead of making fun of me TWICE, because it seems you're the incorrect one here - no wonder I'm constantly confused.10/06/20