How many chlorine molecules are in 35.5g of chlorine gas

Since chlorine is one of the 7 diatomic elements we know that chlorine appears as Cl₂ gas naturally.  That means that the molar mass of a chlorine gas is 70.9g/mol.  That being said, first you need to find the number of moles of chlorine gas that are present in a 35.5g sample.  To do this divide 35.5g by the molar mass of chlorine gas (70.9g/mol) to get 0.501mol of chlorine.  Then you have to multiply 0.501mol by 6.02×10²³ to get the number of chlorine gas molecules.  Therefore 3.01×10²³ molecules of chlorine gas are present in a 35.5g sample.

I hope that helps.  Let me know in the comments if anything is unclear.

m=9

step-by-step explanation:

7m+8=71 subtract   8 from 71 which is 63 than divide it by 7m   equal 9.

                             

D. most models represent a real world object in a simpler way