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.

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.