Chemistry help

<p>We had to find the empirical formula of magnesium oxide (mgo) and I got mg9o5 in the lab. What’s the percent error?
I got 0.00609 mol of mg
0.0034 mol of o
I did ratio of mg to o and got 1.8 </p>

<p>Please help me. I’d really appreciate it.</p>

<p>I know it’s expeimental - accepted over accepted. But I don’t know how to get those values</p>