What is the average for the following set of measurements?
27°c, 12°c, 31°c, 19°c, 23°c, 11°c, 17°c
o a. 7°c
o b. 28°c
o c. 20°c
o
d. 140°c
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Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

What is true for a substance that releases energy

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.