Question

A lab group was determining the mass of sodium hydroxide obtained from a chemical reaction in a lab experiment. Their measurements averaged out to 4.26 grams. The calculated yield of this experiment is 5.21 grams. What was their percent error?

Answer 1

The percent error for the lab group's measurements is 16.31%.

Step-by-step explanation:

To calculate the percent error, we use the formula:

Percent Error = (|Experimental Value - Theoretical Value| / Theoretical Value) x 100%

In this case, the Experimental Value is the average mass obtained by the lab group (4.26 grams) and the Theoretical Value is the calculated yield (5.21 grams).

So the percent error can be calculated as:

Percent Error = (|4.26 - 5.21| / 5.21) x 100% = 16.31%

Therefore, the percent error for the lab group's measurements is 16.31%.