The mass of a watch glass was measured four times. the masses were
99.997 g, 100.008 g, 100.011 g, and 100.005 g. what is the average
mass of the watch glass?

The average mass of the watch glass is 100.005g.

Given that,

Now the average mass of the watch glass should be

= 100.005 g

Therefore we can conclude that the average mass of the watch glass is 100.005g.

Learn more about the mass here: link

Explanation:

1. Sum of Measurements

2. Average mass

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

i think its 5049.

i hope this !