determind in the cost in pennies required to make one 2.500 g penny using the Gold ($1,675.00/troy oz, 1 troy oz = 0.0311034 kg)

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

Consider the following multistep reaction: a b→ab(slow) a ab→a2b(fast)−−−−−−−−−−−−−−−−− 2a b→a2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2