How do you find the average mass of an object?

Answer 1

First, you have to take into consideration all of the isotopes of the certain element, including the percentages of each isotope. You then multiply each isotopes weight by its certain percentage and add all answers together. Such as the isotopes of Tugsten's naturally occurring isotopes:

0.1% of 180 amu

26.3% of 182 amu

14.3% of 183 amu

30.7% of 184 amu

28.6% of 186 amu

(.001x180)+(.263x182)+(.143x183)+(.307x184)+(.286x186)=

Answer 2

The RAM (the number) on the periodic.

Yes, but if the element is non-existant, being used as an example, it is obviously not listed in the Periodic Table.

In which case, if you have two or more variables, you can add them and devide that sum by the number of variables.

Say, for example, an element that does not exist has three different isotopes. The three are 200, 203 and 209. Add these together (612) and divide by three (number of isotopes) and you get the average Atomic Mass of the element. The answer is 204.00.

Answer 3

You need to know the density of the object first. Mass=density x volume, so assuming you have the volume, you need the density of the object to get mass. Density depends on the material of the object in question though, nothing a quick web browse shouldn't be able to handle (assuming its a solid object of one element).

Answer 4

It depends what it is, but in general you

add up all the masses and divide by the number of masses

Answer 5

Number of neutrons + number of protons

*in a typical atom, some may have more or less neutrons, making it an isotope.