Question

50 PTS/BRAINLIEST

Answer 1

The average mass of all of

the isotopes of a substance Isotopes are atoms from

the same element

(therefore containing the

same number of protons)

which have different

numbers of neutrons.

1. Multiply the mass of each

isotope by the % of the

isotope

2. Add the products

Sulfur has three main isotopes.

95% is Sulfur-32, 4% is Sulfur-34,

and 1% is Sulfur

- 33.

So 32.09 amu

Answer 2

bonds break, and new bonds form.