Air bags in automobiles inflate when sodium azide, Nan3, rapidly decomposes to its component elements: 2NaN3(s)>2Na+3N2(g)
(a) How many moles of N2 are formed by the decomposition of 1.60 mol of NaN3?
(b) How many grams of NaN3 are required to form 7.00 grams of N2 gas?

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.