Scenario: You are testing two different household solutions with your cabbage indicator, using the color key to the right. One solution turns blue. A possible hydrogen ion concentration for this solution is: D

1 × 10-2 M

5 × 10-2 M

5 × 10-4 M

1 × 10-8 M

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 →

Write the balanced equation for a reaction between aqueous nitric acid (hno3) and solid lithium metal (this is a single replacement reaction)

Stage in which a star’s outer layers have started to cool and grow outward?