Answer:
The answer is A: The nervous system uses electrical signals, while the endocrine system uses chemical messengers
Explanation: Your body uses electrical signals to move muscles and all types of things like that. The reason you can move your fingers on demand is because of your brain sending electrical signals. Now for pain your body uses chemical signals. Your brain sends out chemical signals letting you know that you are in pain in that specific area.
The right answer is the activation energy.
The catalyst increases the reaction rate by introducing new reaction paths (mechanism), and lowering its activation energy, or activation Gibbs free energy. By doing this it can increase the speed, or lower the temperature of the reaction. It is important to note that the catalyst does not alter the total Gibbs free energy of the reaction which is a system state function and therefore has no effect on the equilibrium constant.
Answer : The correct option is, the activation energy
Explanation :
Activation energy : Activation energy is defined as the minimum amount of energy absorbed by the reactant molecules so that their energy becomes equal to the threshold energy.
During the chemical reaction, the reactants react to form product. When a catalyst is added to a chemical reaction then the reaction becomes faster that means the rate of reaction increases and the activation energy decreases.
In the given diagram, 'G' is the activation energy without catalyst and 'H' is the activation energy with catalyst.
The energy diagram is shown below.
No, Bill did not follow the safe lab procedures.
Some of the safe lab procedures are as follows:
When a test tube is broken, you immediately check yourself first and ensure that it can not make any sort of injury to yourself. Then, inform the teacher or manager of the laboratory about this incident.
Then gather all sorts of pieces of broken test tubes carefully with the help of a broom, and placed them separately instead of using the same garbage can that consists of other waste compounds or substances in the laboratory.
Therefore, it can be estimated that Bill did not follow the safe lab procedures.
To learn more about Safe lab procedures, refer to the link:
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Answer:
its b
Explanation:
LOL.....l just did it
Answer:
False
Explanation:
I just took the test