For the chemical reaction c2h6--> c2h4+ h2+ 137kj, the chemical energy of the
a reactant is greater than the chemical energy of the products b. reactant and the chemical energy of the product are equal. c. reaction cannot be calculated. d. products is greater than the chemical energy of the reactant.

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .

How many atoms of nitrogen are in the chemical formula ni(w on