Which reaction is balanced correctly

a. c + o2 → 2co2
b. ch4 + 4o2 → co2 + 2h2o
c. c3h8 + 5o2 → 3co2 + 4h2o
d. c6h12o6 + 3o2 → 6co2 + 6h2o

How many absorptions would you expect to observe in the 13c nmr spectra of the following molecules? a) 3-chloropentane b) cis-4-methyl-2-pentene

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

Which statement characterizes synthetic polymers? a. they come from animals and plants. b. they are found in nature. c. they are made in a lab. d. they are components of starch.