Asked by Jake

Katie measures the mass of a chunk of gold to be 9.67 g. The accepted mass of the gold chunk is 9.82 g.

How would I calculate the percent error and report my answer to two significant figures?
Answered by Jake
| 9.67- 9.82 | / 9.82 * 100

I got -1.5 .. Is this right?
Answered by DrBob222
That looks ok to me but I would add a % sign after -1.5. Also, since you show that as an absolute value in your formula I would think the answer to be +; however, in chemistry I always keep the - sign. That is, I would remove the absolute sign in the equation. Follow what you've been taught.
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