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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.

Respuesta :

RosePetals0000

Answer:

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

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