The molar mass of gallium (\ce{Ga}GaG, a) is \pu{69.72 g/mol}69.72 g/mol69, point, 72, space, g, slash, m, o, l. Calculate the number of atoms in a \pu{27.2 mg}27.2 mg27, point, 2, space, m, g sample of \ce{Ga}GaG, a.
Write your answer in scientific notation using three significant figures.
\text{atoms Ga}atoms Gastart text, a, t, o, m, s, space, G, a, end text

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

2b2t

explanation:

2b2t