If 0.345 L of a 1.50 M NaCl solution was left open overnight so that only 0.250 L was left, what will the new concentration be?

Which of these best describes an ionic bond?

Once similarity and one difference between a mixture of elements and a mixture of compounds

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.