Track runners will all cover the same distance , the winner will take ?

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 →

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer