thx Craig and other people.....just one more question
explain why current account balances of countries are compared by using CAD as a percentage of GDP??
ys.i..i did...but the novel was difficult to understand as the
story alwasy talk about the past..then back to present...
also i nearly forgot the story already......that's why i ask for the summary
1)i 've got solid sample of zinc nitrate, barium chloride, calcium carbonate and sodium carbonate. given that bottles of distilled water, hydrochloric acid an lime water. how do i know which sample is which??
2) can anyone describe what is meant by an absorption spectrum for me pls...
1) Given that the production of one mole of ammonia releases 46KJ of energy, determine the maximum amount of energy that could be released when 2.5 moles of nitrogen gas and 6 moles of hydrogen gas are hearted together.
* anyone can teach me how to do this Q? what should i do first...
1. describe why it isnecessary to monitor levels of pollutants in our atmosphere
2.what reaction conditions must be met for dynamic equilibrium to be established?
3. describe why a moderate temperature is chosen for the production of ammonia
4.explain why the monitoringofhte reaction...