Answer:
A) The catalyst makes lower energy pathways available.
Explanation:
A catalyst is a substance which speeds up a chemical reaction without itself being used in the reaction. Activation energy is the thresh hold energy which is required to initiate a chemical reaction. In the absence of catalyst, the activation energy is high therefore reactions are slower. But, presence of catalyst lowers the activation energy required to initiate the reaction as a result of which the reaction gets an alternate energy pathway to proceed which is responsible for speeding up the reaction.
Answer:
Oxidized
Explanation:
Compounds that lose or donate electrons are also called electron donors. They act as reducing agents in chemical reactions where they reduce the oxidation states of compounds they react with and they become oxidized themselves.
For example; in the reaction between Hydrogen gas and oxygen to form water
2H+ + O2- _____> H20
Two hydrogen atoms donate their electrons to an oxygen atom, reducing the oxidation state of oxygen to 2- and oxidized itself to +1
The answer is false, liquid molecules continue to move even after the concentration is uniform.
Diffusion happens because there’s a concentration gradient between the dye and the water, therefore dye molecules moves to the water area. But note that this is only the net movement of the molecules, which means, even if more molecules are moving towards water, there are still some dye molecules that are moving in the opposite direction.
So, after the concentration is equal, the motion of the dye molecules does not stop, they still move in random directions, but there’s no net movement instead, as there’s no concentration gradient. Remember molecules are always moving in all directions , it just depends on whether there’s a net movement or not. If there’s no net movement, the amount of molecules moving to each and every direction is always equal.
Because it proves we are related and have same bone structures but we've each modified it to our needs
All of them or ....
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