s258458 s258458

11-02-2021
Chemistry

contestada

A mass of 2 g burning bread heats up 80 g of water from 21 C to 80 C,Calculate the amount of heat transfered to water ( given that = 4.2 j/gC) *

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mashiam4951 mashiam4951

11-02-2021

Answer: Q

=

m

×

c

×

Δ

T

(

Q

is usually used to symbolize that heat required in a case like this.)

For water, the value of

c

is

4.186

J

g

°

C

So,

Q

=

750

×

4.186

×

85

=

266

858

J

=

266.858

k

J

Explanation:

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