Recent content by berry2

Hi, I completed a Grade 12 experiment and now I am doing some calculations about it but I am confused. Here is the question: "Write the net ionic equation for each reaction, and note the value of ΔH for each reaction. e.g. H+(aq) + OH-(aq) --> H2O(l) ΔH = -45 kJ/mol HaOH I had three...

Hi! I have two questions. "How do the two more efficient forms of packing (hexagonal closest packing and cubic closest packing) compare regarding volume?" and "What is the relationship between coordination number, packing, and density (as mass/volume)?" I am taking this Grade 12 Chem course by...

Hi! I'm doing a Grade 12 Chem course by correspondance, so I don't have a teacher to answer my questions about the module. I had to do an experiment about hexagonal closest packing, cubic closest packing and body-centred space lattice. Here is one of the questions: "If a box fit tightly around...

Here is the link to the previous thread: https://www.physicsforums.com/showthread.php?t=74752. As I said earlier, I get totally confused just reading this question, so I'm not even sure what it is really asking. But that is all the information I'm given to work with.

Hi! This is a homework question that I'm supposed to answer but that I really do not understand. "Identify two repulsive forces and two attractive forces that influences the formation of chemical bonds between two atoms." I noticed that this question was already posted once at this website but I...