Question

stoichiometry is a big word that describes a simple idea. stoichiometry is the part of chemistry that studies amounts of substances that are involved in reactions. you might be looking at the amounts of substances before the reaction. you might be looking at the amount of material that is produced by the reaction..... so stoichiometry studies what?
○ storks
○ meters
○ amounts of substances that are involved in reactions.

stoichiometry is a way chemist can measure the amount of atoms and molecules in a chemical reaction. instead of chemicals in a chemistry lab lets use cookie ingredients as an example (picture). if you want to make 12 cookies how many eggs do you need?

stoichiometry
chocolate chip cookie recipe:
1 cup + 4 eggs + ½ cup + 1 cup + ½ cup →12
if i want only 1 cookie, then how much of each ingredient is needed?
1/12 cup + 1/3 egg +1/24 cup +1/12 cup +1/24 cup →1

Explanation:

First Sub - Question (Multiple - Choice about Stoichiometry's Study)

The text says stoichiometry is the part of chemistry that studies amounts of substances in reactions. "Storks" is irrelevant, "meters" is a unit of length. So the correct option is the one about amounts of substances in reactions.

Step1: Analyze the Recipe

From the chocolate chip cookie recipe, to make 12 cookies, the number of eggs required is given as 4 eggs (from the recipe: 1 cup + 4 eggs + ½ cup + 1 cup + ½ cup → 12 cookies).

Step2: Confirm the Requirement

The question asks for the number of eggs to make 12 cookies, and from the recipe, it's 4 eggs.

Answer:

C. amounts of substances that are involved in reactions.

Second Sub - Question (Calculating Eggs for 12 Cookies)