Chemical compounds secreted by mammals and insects to communicate sexual readiness are called

Iwll give extra points to who gets this for ! what type of reaction is this? ?

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 atom or ion is the largest? 0 a. 0 0 0 0 e. li