2. an element is a mixture of two isotopes. one isotope has an atomic mass of 34.969 amu and an
abundance of 64.88%. the other isotope has an atomic mass 36.966 amu. create a data table for this
element like the one shown in #1. calculate the average atomic mass of the element, and then use your
periodic table to identify the element.

The average atomic mass of an element is 35.67 amu and the unknown element will be chlorine.

Explanation:

Mass of isotope 1 = 34.969 amu

% abundance of isotope 1 = 64.88% =

Mass of isotope 2 =  36.966 amu

% abundance of isotope 2 = (100-64.88)% =

Formula used for average atomic mass of an element :

Therefore, the average atomic mass of an element is 35.67 amu and the unknown element will be chlorine.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

answera compound;