HELP ASAP The north pole of a bar magnet is moved close to the north pole of a second bar magnet. What prediction best
describes how the first magnet responds when it is released?
O It will move toward the second magnet because like poles repel.
O It will move toward the second magnet because like poles attract.
O It will move away from the second magnet because like poles repel.
O It will move away from the second magnet because like poles attract

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Light waves can move through , but they travel fastest when they move through a(n) .