# 1.7: Experiment 5 - The Mole

- Page ID
- 306120

Learning Objectives

**By the end of this lab, students should be able to:**

- Explain the concept of the Mole and its relationship between mass, number of atoms, number of molecules, and formula units.
- Perform mole-mass calculations and determine the number of atoms, molecules, or formula units of several substances.

**Prior knowledge:**

## Introduction

The basic counting unit used in chemistry is the "Mole". In this lab, you will perform calculations using molar relationships, which is essential to understanding chemistry. The lab activities start with conversions involving elements, followed by compounds. You will also review basic scientific notation and rules for significant figures.

Can you imagine real world Moles?

- There are approximately one hundred trillion cells in a human body and there are roughly six billion people on Earth. Therefore, the total number of human cells on the planet is approximately (100 x 10
^{12}cells per human) * (6 x 10^{9}humans per Earth) = 6 x 10^{23}cells on the planet. This number is very close to one mole. - If you had exactly one mole of pennies, you could share enough money with everyone in the world that each person could spend a million dollars every hour for the rest of their lives.
- If someone wanted to use trial and error to find the combination of a password containing six alphanumeric characters, it would take that person 6
^{36}different tries, which is approximately 10^{28}. This is over 17,000 moles.

## Pre-Lab Primer

This pre-lab assignment is an individual assignment to be completed on your own with the help of the "Prior Knowledge" links at the top of this page. All work must be in your own words. Do not copy and paste information from the internet. The assignment will be due 10 minutes before your lab begins. **Late work will not be accepted.**

The document below is a preview only. Please do not try to screenshot or print it off. You will be able to find your assignment to work on in your Google Classroom.

Interactive Element

## In-Lab Assignment

### The Mole Group Worksheet

Using Zoom Breakout rooms, you will work collaboratively with your group on a Google Doc worksheet called **"The Mole Group Worksheet"**. For this assignment, your group will need to watch a lab video on YouTube and then complete the questions accordingly. The link for the YouTube video will be given to your group on the day of your lab.

Each person can type in this document at the same time. Remember, part of your grade comes from your participation during lab, so there will be a Peer Evaluation this week. Make sure you are contributing to discussion and to the completion of the worksheet. The worksheet will be due by the end of your lab session, and late work is not accepted. Be sure to turn your assignment in on Google Classroom.

The document below is a preview only. Please do not try to screenshot or print it off. You will be able to find your assignment to work on in your Google Classroom.

Interactive Element

## Post-Lab Problem Set

After you have had a chance to work on the data analysis with your group during lab, you will be given the **Mole Post-Lab Problem Set.** This is an individual assignment that must be completed on your own, and it is based on your Pre-Lab Primer and your In-Lab Assignment. This assignment will be due the day after your lab meets by 5 p.m. For example, if your lab is on Monday, the Post-Lab Problem Set will be due on Tuesday at 5 p.m.

__No late work is accepted.__The document below is a preview only. Please do not try to screenshot or print it off. You will be able to find your assignment to work on in your Google Classroom.

Interactive Element