The figure represents a solid block of copper metal in a beaker at 30°C Which of the following best represents the particle arrangement as a student tips the beaker, which is kept at 30°C?

The isotonic saline solution described in part a is connected to an unknown solution via a semipermeable membrane, the unknown solution level drops. based on this information, what can be said about these two solutions?

Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.