How many kJ are required to melt 100 grams of water?

33.4 kj

Explanation:

Given data:

Mass of water = 100 g

Kj required to melt = ?

Solution:

Formula:

q = mHf

Hf = heat of fusion

Heat of fusion of water = 333.55 /g

Now we will put the values in formula.

q = 100 g × 333.55 j/ 1g

q = 33350 j

Jolue to kj conversion.

33350 j × 1kj / 1000 j

33.4 kj

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.