Enter your answer in the provided box. the atomic masses of 63cu (69.17 percent) and 65cu (30.83 percent) are 62.94 and 64.93 amu, respectively. calculate the average atomic mass of copper. the percentages in parentheses denote the relative abundances.

The average atomic mass of copper is 63.55 amu.

Explanation:

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

  .....(1)

For isotope:

Mass of isotope = 62.94 amu

Percentage abundance of = 69.17 %

Fractional abundance of isotope = 0.6917

For isotope:

Mass of isotope = 64.93 amu

Percentage abundance of = 30.83 %

Fractional abundance of isotope = 0.3083

Putting values in equation 1, we get:

Hence, the average atomic mass of copper is 63.55 amu.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

Is a logical series of steps