Question

when one gram of gasoline burns in a cars engine, the amount of energy given off is approximately 1.03x10^4 cal. express this quantity in joules. use 1 cal= 4.184 j​

Answer 1

The amount of energy in joules : 4.31 x 10⁴ J

Further explanation

Energy can be interpreted as the ability to do work

There are several examples of energy , including heat energy

The amount of heat is influenced by the mass of the object and the difference in temperature

Can be formulated

Q = m.c.ΔT

Q: heat received or removed by an object (J)

m: object mass (kg)

c: heat type substance (J / kg⁰C)

ΔT: temperature change (⁰C)

The amount of energy given off is 1.03x10⁴ cal.

Because 1 cal= 4.184 J​, then

`\tt =1.03* 10^4* 4.184\\\\=\boxed{\bold{4.31* 10^4~J}}`