Answer to Question #232046 in General Chemistry for ann

Question

how many ml of water at 10 degrees celsius (2 significant figures) must be added to 75 ml of water at 35 degrees celsius to obtain a final temperature of 19 degrees celsius?

Answer 1

Q=mCΔT

; where

m is the mass of the substance,

C is the specific heat of the substance, and

ΔT is the difference in temperature.

35 -19 = 16

19-10 = 9

16 + 9 = 25

0.075 × 25 × 4.189 = 7.85 ml