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# oxygen atoms in 3.00g of sodium dichromate

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How many moles of oxygen atoms are there in 3.00g of sodium dichromate, Na2CrO7?

https://brainmass.com/chemistry/stoichiometry/number-moles-oxygen-atoms-2486

#### Solution Preview

Solving a mole problem such as this one can be broken down into several steps. Make sure that you understand the logic behind these steps as they can be applied to any problem such as this one.

1. Calculate the moles of Sodium dichromate:
This is accomplished using the formula: mols = mass/molar mass. We already ...

#### Solution Summary

This solution converts mass to moles in four steps: calculate the moles of Sodium dichromate, calculate the mols of oxygen per mol of the compound, calculate the mols of oxygen in per 0.011454 mols of the compound, and answer the question in the correct number of significant figures. 225 words.

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