The density of mercury is 13.6 g/cm3. What approximate mass of mercury is required to fill a 1 ounce bottle? An ounce is approximately 30 cm3

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 →

Can someone me with questions 12 and 13 plz.

Why is permeable soil best for plants that need a lot of drainage?