Balance these equations C5H12 + O2 CO2 + H2O

NH4NO2 N2 + H2O

N2 + O2 N4O10

MgCO3 + NaBr MgBr2 + Na2CO3

K + LiCl KCl + Li

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

List four observations that indicate that a chemical reaction may be taking place

What layer of the atmosphere is directly above the troposphere?