> What do all electromagnetic waves have in common?
O They can travel at the speed of light.
They have the same wavelengths.
O They travel only through matter.
O They have nonmoving magnetic fields.

Matches the chemical name of each oxide of phosphorus to its chemical formula

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)

What is the work done by the electric force to move a 1 c charge from a to b?