2) Millions of years ago, this area was covered by ocean. Which rock layer shows this tim period? #___

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 →

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Why is nh3 classified as a polar molecule