What is most likely true of an atom with a mass of 15 amu?

What is the oxidation state of an individual bromine atom in nabro3?

If you used the method of initial rates to obtain the order for no2, predict what reaction rates you would measure in the beginning of the reaction for initial concentrations of 0.200 m, 0.100 m, & 0.050 m no2.

Which of the following are in a chemical family a. ca, sc, k b. cu, ag, au c. so, ge, sb