How do you figure out the weight of combined elements?

Answer 1

To figure out the weight of combined elements, you look at a Periodic Table to find the atomic masses of each element. Then you add up all of those masses to find the weight of the combined elements.

Answer 2

I'm going to assume you mean compound.

There is no such thing as "combined" elements. You can have an atomic number (protons) in each individual atom in a compound, however it is not "combined" when counting the protons of the whole molecule. You could say, for example, O2 has 16 protons (in total), but not an atomic number of 16 because an oxygen atom has an atomic number of 8. By saying an atomic number of 16 makes that atom sulfur and not oxygen.

Answer 3

[fraction 1 + no. of protons] + [fraction 2

+ no. of nuetrons] + [fraction 3 + no.of electrons] = average Atomic Mass of element

Answer 4

Use the following equation:

number of electrons in element 1 + number of protons in element 2 - double the amount of protons in element 1