4Na + O2 - > 2Na2O

In this chemical reaction, how many moles of Na2O will be produced if 2.90 moles of Na react completely? Express answer to three significant figures.

Question

Naima Larson

Chemistry

11 July, 20:45

4Na + O2 - > 2Na2O

In this chemical reaction, how many moles of Na2O will be produced if 2.90 moles of Na react completely? Express answer to three significant figures.

+3

Answers (1)

Know the Answer?

Mariyah Barry · Answer 1

3.91g

Explanation:

1. Use the equation mol = mass/Mr (Molecular Formula)

2. Use the information you have and put it into the formula 2.9/23 = 0.1260869565

3. Multiply 0.1260869565 by 62 (molecular formula of Na2O) - Formula rearranged to mass = mol * Molecular formula = 7.817391303

4. Divide by two to get two moles, as shown in the chemical equation

5. 3.9086956515

6. 3.91g to three significant figures

4Na + O2 - > 2Na2OIn this chemical reaction, how many moles of Na2O will be produced if 2.90 moles of Na react completely? Express answer to three significant figures.

4Na + O2 - > 2Na2O

In this chemical reaction, how many moles of Na2O will be produced if 2.90 moles of Na react completely? Express answer to three significant figures.