3. A student took a calibrated 200.0 gram mass, weighed it on a laboratory balance, and found it read 196.5 9. What was the student's percent error?

Explanation:

The percentage error of a certain measurement can be found by using the formula

From the question

actual mass = 200 g

error = 200 - 196.59 = 3.41

We have

We have the final answer as

Hope this helps you

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.