What is the molar mass, in grams, of a mole of an element equal to?
o a. the number of electrons in the element
o b. the atomic weight of the element
oc. the atomic number of the element
od. the number of neutrons in the element

Which one of the following is an oxidation-reduction reaction? naoh + hno3 --> h2o + kno3 naoh + hno3 --> h2o + kno3 so3 + h2o --> h2so4 cacl2 + na2co3 --> caco3 + 2 nacl ch4 + 2 o2 --> co2 + 2 h2o al2(so4)3 + 6 koh --> 2 al(oh)3 + 3 k2so4