How many total atoms are in 0.250g of p2o5?

Explanation:

According to the mole concept, there are atoms present.

It is given that mass is 0.250 g. And, number of moles are equal to mass divided by molar mass.

Mathematically,       No. of moles =

As molar mass of is 283.88 g/mol. Therefore, putting given values into the above formula as follows.

                 No. of moles =

                                       =

                                       = 0.0008 mol

Hence, number of atoms present in 0.0008 mol are as follows.

                     = 0.0048 atoms

Thus, we can conclude that there are 0.0048 atoms in 0.250 g of .

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.