An unknown salt was dissolved in 1.97g of water. The temperature of the water decreased from 24.8C to 21.4C when 8mol were dissolved. What is the heat of solution in kJ/mol?

1. combine iron and copper (ii) sulfate solution. (hint: iron will form the iron (iii) ion) fe + cuso4 → 2. combine lead (ii) nitrate and potassium iodide solutions. pb(no3)2+ kl → 3. combine magnesium metal and hydrochloric acid solution. mg + hcl → 4. electrolysis (splitting) of water. h2o → 5. burning magnesium. mg + o2 →

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?