6) Using the rules for significant figures, the sum of 0.027 gram and 0.0023
gram should be expressed as
A) 0.030 gram B) 0.0293 gram C) 0.029 gram D) 0.03 gram
I need help

it would be C

Explanation:

C

Explanation:

both numbers have 2 S.F. so the answer should have 2 too.

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.