A student measures the mass of a sample as 9.64 g. Calculate the percentage error, given that the correct mass is 9.80 g.

Explanation:

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

From the question

actual mass = 9.80 g

error = 9.80 - 9.64 = 0.16

We have

We have the final answer as

Hope this helps you

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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