How much heat is needed to change the temperature of 3 grams of gold (c = 0.129 ) from 21°C to 363°C? The answer is expressed to

Question

3 years ago

10

the nearest whole number.

2 answers:

Anna71 [15] · Answer 1 · 2022-08-23T14:24:31+03:00

6 0

Answer:

It's 132 or B on edge 2020

Explanation:

Temka [501] · Answer 2 · 2022-08-23T12:22:57+03:00

Q= mcΔT

Where Q is heat or energy

M is mass, c is heat capacitance and t is temperature

You have to convert Celsius into kelvin in order to use this formula I believe

Celsius + 273 = Kelvin

21 + 273 = 294K

363 + 273 = 636K

Now...

Q= (0.003)(0.129)(636-294)

Q= 0.132 J if you are using kilograms, in terms of grams which seems more appropriate the answer would be 132J of energy.