Answer:
the last picture on the right (kinda red-ish)
Explanation:
First picture: organ
Second picture: system
Third picture: organism
Last picture: tissue
Hope this helps!
The chemical reaction of Cavendish involving zinc would be a reaction between hydrochloric acid and zinc yielding zinc chloride and hydrogen gas. The balanced chemical equation would be:
2Zn + 2HCl = 2ZnCl + H2
This is an example of a single replacement reaction where zinc replaces hydrogen in the acid molecule.
A physical change<span> in a substance doesn't </span>change<span> what the substance is. In a </span>chemical change<span> where there is a </span>chemical reaction<span>, a new substance is formed and energy is either given off or absorbed.</span>
Just as a dozen is 12 of something, a mole is about 6.02 * 10^23 of something .
