# You are making cookies and are missing a key ingredient—eggs. You have plenty of the other ingredients, except that you have only 1.33 cups of butter and no eggs. You note that the recipe calls for 2 cups of butter and 3 eggs (plus the other ingredients) to make 6 dozen cookies. You telephone a friend and have him bring you some eggs. How many eggs do you need? If you use all the butter (and get enough eggs), how many cookies can you make? fortunately, your mend hangs up before you tell him how mans’ eggs you need, then he arrives, he has a surprise for you—to save time he has broken the eggs in a bowl for you. You ask him how many he brought, and he replies, “All of them, but I spilled some on the way over.” You weigh the eggs and find that they weigh 62.1 g. Assuming that an average egg weighs 34.21 g: How much hunger is needed to react with all the eggs? How many cookies can you make? Which will you have left over, eggs or butter? How much is kit over? Relate this question to the concepts of chemical stoichiometry.

### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425

Chapter
Section

### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425
Chapter 9, Problem 2ALQ
Textbook Problem
108 views

## You are making cookies and are missing a key ingredient—eggs. You have plenty of the other ingredients, except that you have only 1.33 cups of butter and no eggs. You note that the recipe calls for 2 cups of butter and 3 eggs (plus the other ingredients) to make 6 dozen cookies. You telephone a friend and have him bring you some eggs. How many eggs do you need? If you use all the butter (and get enough eggs), how many cookies can you make? fortunately, your mend hangs up before you tell him how mans’ eggs you need, then he arrives, he has a surprise for you—to save time he has broken the eggs in a bowl for you. You ask him how many he brought, and he replies, “All of them, but I spilled some on the way over.” You weigh the eggs and find that they weigh 62.1 g. Assuming that an average egg weighs 34.21 g: How much hunger is needed to react with all the eggs? How many cookies can you make? Which will you have left over, eggs or butter? How much is kit over? Relate this question to the concepts of chemical stoichiometry.

Interpretation Introduction

(a)

Interpretation:

The number of eggs needed to make cookies from 1.33 cups of butter is to be stated.

Concept Introduction:

The reactant that determines the concentration of the product formed in a chemical reaction is known as limiting reagent. The other reactants left in the reaction mixture are termed as reactants in excess.

### Explanation of Solution

From the given data it is stated that-

For the preparation of 6 dozens of cookies, one requires 2 cups butter and 3 eggs. It can be represented as a chemical equation as-

From the above reaction-

2 cups of butter need 3 eggs to make cookies

Applying unitary method-

1 cup of butter need 3/2 eggs to make cookies

So, for 1.33 cups butter, the eggs needed are-

1

Interpretation Introduction

(b)

Interpretation:

The number of cookies that can be made from 1.33 cups of butter is to be stated.

Concept Introduction:

The reactant that determines the concentration of the product formed in a chemical reaction is known as limiting reagent. The other reactants left in the reaction mixture are termed as reactants in excess.

Interpretation Introduction

(c)

Interpretation:

The amount of butter needed to react with the eggs is to be stated.

Concept Introduction:

The reactant that determines the concentration of the product formed in a chemical reaction is known as limiting reagent. The other reactants left in the reaction mixture are termed as reactants in excess.

Interpretation Introduction

(d)

Interpretation:

The number of cookies that can be made from eggs is to be stated.

Concept Introduction:

The reactant that determines the concentration of the product formed in a chemical reaction is known as limiting reagent. The other reactants left in the reaction mixture are termed as reactants in excess.

Interpretation Introduction

(e)

Interpretation:

From eggs or butter, the material that will be left over is to be stated.

Concept Introduction:

The reactant that determines the concentration of the product formed in a chemical reaction is known as limiting reagent. The other reactants left in the reaction mixture are termed as reactants in excess.

Interpretation Introduction

(f)

Interpretation:

The amount that is left over is to be stated.

Concept Introduction:

The reactant that determines the concentration of the product formed in a chemical reaction is known as limiting reagent. The other reactants left in the reaction mixture are termed as reactants in excess.

Interpretation Introduction

(g)

Interpretation:

The relation of the concepts of chemical stoichiometry with the question is to be stated.

Concept Introduction:

The reactant that determines the concentration of the product formed in a chemical reaction is known as limiting reagent. The other reactants left in the reaction mixture are termed as reactants in excess.

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