Which of the diethylbenzene isomers (ortho, meta, or para) corresponds to each set of 13c nmr spectral data?

[a] 13c nmr signals: 15, 26, 126, 128, and 142 ppm
[b] 13c nmr signals: 16, 29, 128, and 141 ppm
[c] 13c nmr signals: 16, 29, 125, 127.5, 128.4, and 144 ppm

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Displacement is the slope of a velocity vs. time graph a. true b. false

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.