Polonium 210, botulinum toxin, and the toxin from the poison frog are perhaps the most toxic and deadly poisons known to mankind. Polonium 210 is so radioactive that a gram of it can kill 10 million people and the few that will survive will undeniably have cancer. Botulinum toxin is the most lethal toxin. A few drops could kill billions of people. It causes botulism which weakens the muscles of the body and eventually leads to death. The poison frog is used to add poison to arrows of hunters in South America. Simply touching the small frog will surely cause death either by cardiac arrest or lung failure.
Answer:
No limiting reagent. There is an exact amount of each.
Explanation:
Start by getting the equation
Fe + O2 -> Fe2O3
If you balance the oxygens the Fe will easily follow.
Fe + 3O2 => 2Fe2O3
So far what you have is 6 oxygens on the right and 6 on the left. Now all you need do is balance the irons. The are 4 on the right (2Fe2). So you must have 4 on the left.
4Fe + 3O2 -> 2Fe2O3
Now to your question if you have 4 mols of iron, you need 3 mols of O2. Those are the balance numbers of the equation. They also represent mols.
There is no limiting reagent in the theoretical world of chemistry. All the iron will be used up and so will the given amount of oxygen.
You mostly find synthetic elements towards the bottom rows of the periodic table. One sticks out though which is Tellurium which is in the fifth row 7th element. You find your synthetic elements in rows 5, 6, 7, 8, and the lanthanides, and actanoids.
Answer:
NO₃⁻.
Explanation:
- Spectator ions are the ions that is present in the same form on both sides of a chemical equation (do not change).
For the reaction: Mg(s) + Zn²⁺ + 2NO₃⁻ → Mg²⁺ + 2NO₃⁻ + Zn(s),
- The reactants' side contains two ions
: Zn²⁺ and NO₃⁻.
- Also, the product's side also contains two ions
: Mg²⁺ and NO₃⁻.
<em>Because the nitrate anions are present on both sides of the equation, they are spectator ions.</em>