How many molecules are in 9.8 grams of calcium

Molar mass of Calcium ( Ca ) = 40.078 g/mol

Number of moles in 9.8 grams :

1 mole Ca > 40.078 g
mole Ca > 9.8 g

moles Ca = 9.8 / 40.078

moles Ca = 0.2445 moles

number of molecules:

1 mole > 6.02x10²³ molecules
0.2445 moles > ?

= 0.2445 * 6.02x10²³

= 1.47x10²³ molecules

hope this helps!.

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.