A set of sample has 92% with a mass of 56.831 amu and the other with 8% with a mass of 51.22 amu, what is the Average Atomic Mass for this
element?
Avg Atomic Mass =

Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1

Which element is least likely to undergo a chemical reaction

How many neutrons does an element have if its atomic number is 50 and its mass number is 166