Question

A. A sample of copper goes from an initial temperature of 65.2 °C to a final temperature

of 24.5 °C. If -1960 J of heat were released. Copper has a specific heat of 0.385
J/g °C. What is the mass of the copper sample?

Answer 1

Step-by-step explanation:

Formula

H= mC∆∅

where H= -1960J

C= 0.385J/g/°C

ع= 65.2°C

∅² = 24.5°C

m= ?

-1960= m x 0.385x(65.2-24.5)

-1960= m x0.385 x 40.7

-1960= 15.6695m

m= -1960/15.6695

m= 125g