Question

What amount of heat is required to increase the temperature of 75.0 grams of gold from 150°C to 250°C? The specific heat of gold is 0.13 J/g°C.A. 750 joules B. 980 joules

C. 1300 joules D. 1500 joules E. 2500 joules

Answer 1

B. 980 joules

Step-by-step explanation:

Answer 2

B. 980 joules

Step-by-step explanation:

Given the following data

initial temperature T1= 150 °C

final temperature T2= 250 °C

specific heat of gold c= 0.13 J/g°C

mass of gold m= 75.0 grams

we can use the expression stated below to solve for the quantity of heat

`Q= mc(T2-T1)---------1`

Substituting our known data into the expression we can solve for the value of Q

`Q= 75*0.13(250-150)---------1\\\\Q= 75*0.13(100)\\\\Q= 975 Joules`

The quantity of heat need to raise the temperature from 150°C to 250°C is 975 J