Label each of the following reactions as one of the following: Synthesis, Single Replacement, Double Replacement, Decomposition, Combustion
30.
PbSO4 > PbSO3 + O2
31.
C5H90 + 02 > CO2 + H2O
32.
H2O + SO3 > H2SO4
33.
NH3 + 12 > N216 + H2
34
NaBr + Ca(OH)2 > CaBr2 + NaOH

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.