Notice the five types of bag materials. LDPE, HDPE, and Mylar are types of plastic, while latex and neoprene are types of rubber. Find the combination of water and powder that produces the maximum temperature increase. To maintain a controlled experiment, use the same amounts of water and powder in each bag. Record data below: Type of material LDPE HDPE Latex Mylar Neoprene
Maximum temp. (ºC) 67ºC 65ºC 65ºC 68ºC 54ºC

Required:
a. Which pack material got the hottest?
b. Why do you think the outside of this pack got hotter than the other ones?

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.

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.

What can be done to make a solid solute dissolve faster in a liquid solvent?