We have to calculate the number of molecules in 6.6 g H_{2}O.

The number of particles/molecules in a substance can be calculated by this formula:

$\overline{){\mathbf{N}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}\frac{\mathbf{mass}}{\mathbf{molar}\mathbf{}\mathbf{mass}}{\mathbf{\times}}{{\mathbf{N}}}_{{\mathbf{A}}}}$

**Where,**

N = number of particles

N_{A} = Avogadro’s number = 6.022×10^{23} particles/mol

How many molecules are in each of the following?

6.6 g H_{2}O

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mole Concept concept. You can view video lessons to learn Mole Concept. Or if you need more Mole Concept practice, you can also practice Mole Concept practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Coarfa's class at SJCD.