How many grams of ice could be melted by using 67,000 joules of energy? (Hint: identify the phase change and which formula to use and then just plug in and solve for the missing variable! Don’t forget to convert Joules (J) to kilojoules (KJ) by moving the decimal 3 places to the left.)

200.87 g

Explanation:

In order to calculate the mass of ice that could be melted by using 67,000 J of energy, we will use the following expression.

Q = ΔH°f × m

where,

67,000 J of energy can be used to melt 200.87 grams of ice.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.