What is the total amount of heat required to completely melt 347 grams of ice at its melting point?
1)334 j
2) 1450 j
3) 116,000 j
4) 784,000 j

The correct answer is Option C.

Explanation: The heat required can be calculated by using the formula:

where, q = heat required or released

m = mass of the substance

L = Latent heat

As, this process is the melting of ice, so latent heat of fusion is used:

Latent heat of fusion for ice is 334 kJ/kg

Mass of the object = 347 grams = 0.347 kg  (Conversion factor: 1kg = 1000 grams)

Putting the values in above equation, we get:

Converting kilo-joules into joules, we use the conversion:

1 kJ = 1000J

So, q = 116000J

Hence, the correct option is 3.

it's all four options.