A poison (possibly used by the KGB) is W(CO) 6 and has the name tungsten hexacarbonyl. It is a white, crystalline, volatile, and highly toxic solid.

A poison (possibly used by the KGB) is W(CO)6 and has the name tungsten hexacarbonyl. It is a white, crystalline, volatile, and highly toxic solid. Unless you are specifically looking for it, it can be rather difficult to find which makes it an ideal poison. Furthermore, it is easily smuggled through airports and customs. If we wanted to determine the mass of one molecule of W(CO)6, which of the following calculations would give us the correct result? 

A.(183.84 + 12.01 + 15.999) × 6

B.(183.84 + 12.01 + 15.999)

C.183.84 + (12.01 + 15.999) × 6

D.183.84 + 12.01 + (15.999) × 6