Determine the number of significant figures in each of the following measurements:. (a) 0.0000003 cm
(b) 2901 g
(c) 40.2 g
(d) 56 mL

(a) 1.

(b) 4.

(c) 3.

(d) 2.

Explanation:

Hello,

(a) In this case, we do no take into account the zero digits before the first nonzero digit which is three, therefore it has one significant figure.

(b) In this case, we consider all the given figures since they are all after the first nonzero digit, therefore it has four significant figures.

(c) In this case, we consider all the given figures since they are all after the first nonzero digit including the decimal place, therefore it has three significant figures.

(d) In this case, we consider all the given figures since they are all after the first nonzero digit, therefore it has two significant figures.

Regards.

Explained below.

Explanation:

A tennis player with two sneakers wouldn't bond to any other tennis player because he is already stable and complete with the 2 and doesn't need another players assistance to make him stand well.

However, helium atom with two electrons wouldn't bond to any other atoms because it is stable. This stability arises from the fact that it has two protons and 2 electrons, of which the 2 electrons completely fill its valence shell/outer most shell to make it neutral.