For which compound does 0.256 mole weigh 12.8 g?

a) (c_2 h_4 o)
b) (co_2)
c) (ch_3 cl)
d) (c_2 h_6)
e) none of these

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

Which feature do highland climates have that lower elevation areas do not?

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u. s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?