Mendeleev’s chart allotted spaces for elements that were yet to be discovered. For some of these missing pieces, he predicted what their atomic masses and other chemical properties would be.
Answer:
No, he is not.
Explanation:
When he let the rubber band go, the band compresses, so there's elastic potential energy in it, which will be transformed into kinetic energy when it gains velocity and flies across the room.
Then, Elias had inverted the concepts: the experiment demonstrates the transformation of elastic potential energy to kinetic energy.
Answer:
dont know, will let uk in 2 mins
Explanation:
Answer: The stoichiometric coefficient for oxygen is
.
Explanation:
A number present on the front of an atom, ion or molecule in a chemical reaction equation is called a stoichiometric coefficient.
For example, ![H_{2}O(l) \rightarrow H_{2}(g) + \frac{1}{2}O_{2}(g)](https://tex.z-dn.net/?f=H_%7B2%7DO%28l%29%20%5Crightarrow%20H_%7B2%7D%28g%29%20%2B%20%5Cfrac%7B1%7D%7B2%7DO_%7B2%7D%28g%29)
Here, the stoichiometric coefficient for
is 1, for
is 1 and for
is
.
Thus, we can conclude that the stoichiometric coefficient for oxygen is
.