Computational Thinking in Science and Math

Lesson 5: What is Molarity?

---

How do we know how many moles of something we have if the substance is dissolved in water? You have used many solutions in chemistry this year. The concentration of those solutions is always indicated with an "M". The "M" stands for something called molarity.

In Lesson 2: What Happens to Mass During a Chemical Reaction, you used both hydrochloric acid and acetic acid. Both of these chemical compounds were followed by (aq), meaning in an "aqueous" solution. This means that the hydrochloric acid and the acetic acid were in a solution of water.

• Molarity Calculations - Download