Iron + sulfur -
iron(II) sulfide

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 →

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

How many atoms are in 2 moles of phosphorus?