Answer to Question #161999 in Molecular Physics | Thermodynamics for Maryam

Question

How much oil at 200 degrees Celsiusmust be added to 50g of the same oil at 20 degrees celsius to heat it to 70 degrees celsius

Answer 1

Heat lost at high temperature will be used to increase temperature of oil at low temperature.

Let mass be m which is to be added.

Then,

$ms(200-70)=50s(70-20)$

Solving it we will get, $m = 19.23 g$