Pb0 is not a recognized chemical notation. If you are referring to the element lead (Pb), the subscript 0 would not be a valid chemical representation.
The compound described as Pb0 does not exist in isolation. It seems that it is a notation error. The correct notation for lead is Pb with a 0 subscript indicates an oxidation state of 0, but lead typically forms compounds with positive oxidation states.
This can be modeled as a "collision" where momentum is conserved. Momentum equals mass times velocity (p = mv).Let's call the momentum of the student before the collision ps0 and the momentum of the skateboard before the collision pb0. Let's call the momentums after the collision ps1 and bs1.Since momentum is conserved, ps0 + pb0 = ps1 + bs1. Plugging the numbers for the momentum gives us:(45)(3) + (m)(0) = (45)(2.7) + (2.7)(m), where m is the mass of the skateboard.Simplified:135 = 2.7m + 121.513.5 = 2.7mm = 5So the mass of the skateboard is 5 kg.(Note that the units are all in kilograms, meters, and seconds they call match up in the calculations.)
Because it reduces things. Pb0 + CO -> Pb + CO2
The compound described as Pb0 does not exist in isolation. It seems that it is a notation error. The correct notation for lead is Pb with a 0 subscript indicates an oxidation state of 0, but lead typically forms compounds with positive oxidation states.
This can be modeled as a "collision" where momentum is conserved. Momentum equals mass times velocity (p = mv).Let's call the momentum of the student before the collision ps0 and the momentum of the skateboard before the collision pb0. Let's call the momentums after the collision ps1 and bs1.Since momentum is conserved, ps0 + pb0 = ps1 + bs1. Plugging the numbers for the momentum gives us:(45)(3) + (m)(0) = (45)(2.7) + (2.7)(m), where m is the mass of the skateboard.Simplified:135 = 2.7m + 121.513.5 = 2.7mm = 5So the mass of the skateboard is 5 kg.(Note that the units are all in kilograms, meters, and seconds they call match up in the calculations.)