The temperature of 15.71 grams of gold rises from 32°c to 1,064°c, and then the gold melts completely. if gold’s specific heat is 0.1291 joules/gram degree celsius and its heat of fusion is 63.5 joules/gram, how much energy is gained by the gold?

The answer is:

The total energy gained is equal to 3091 Joules.

To calculate how much energy is gained by the gold, we need to use the formula to calculate the heat transfer, it's defined by the following equation:

We know that the gold melts completely (it reached its melting point or fusion temperature), so, we need to rewrite the equation as follow:

Where,

m,is the mass of the material

c, is the specific heat of the material

ΔT, is the change of temperature.

ΔH, is the heat of fusion of the material.

So, from the statement we know the following information:

Then, substituting and calculating, we have:

Hence, we have that the total energy gained is equal to 3091 Joules.

Have a nice day!

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.