The first set of questions are based on the “reaction” illustrated as: 2g + 1c + 1m --> 1s
if you are given 12 graham crackers, how many chocolate bars and marshmallows would you need to completely use all the graham crackers? show your calculations.
how many s’mores can you make? show your calculations.

6 Chocolate bars and c marshmallows would be needed to completely use all the 12 graham crackers.

We can be able to make 6 s'mores.

Explanation:

2G + 1C + 1M → S

According to reaction , 2 graham crackers along with 1 chocolate bar and 1 marshmallow gives 1 s'more.

Then for 12 graham crackers will combine with:

Then for 12 graham crackers will combine with:

Then 12 graham crackers will give:

We can be able to make 6 s'mores.

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.