Which two observations below can be evidence that a chemical change has occurred
a. production of bubbles (a gas)
b. melting
c. vaporization
d. production of heat

What is the formula for the molecular compound nitrogen monoxide

Each of the following compounds contains a metal that can exhibit more than one ionic charge. provide systematic names for each of these compounds. (a) cr(clo3)6 (b) mo(cn)6 (c) cr2(so3)3 (d) v(clo2)2 (e) v(cn)5 (f) os(clo2)4

What is the mass of 0.46 mol of mgcl2