Metalloids contain characteristics from both metals and non-metals, non metals are not able to conduct electricity.
Amphibian means two-lives,<span> </span>Frogs<span> begin their </span>lives<span> in the water as eggs and then tadpoles after they get big enough </span><span>they are fully developed they live on land.</span>
Answer:
- You may normally expect a <em>slow</em> reaction if a <em>high</em> activation energy is required.
- Or, You may normally expect a <em>fast</em> reaction if a <em>low</em> activation energy is required.
Explanation:
- To answer this question, we should define firstly the term of activation energy.
- The activation energy is the minimum energy must the reacting molecules have to initiate the chemical reaction.
- Also, we can define it as The energy barrier that the molecules must posses an amount of energy equal or more than the value of this barrier.
- So, as the activation energy be of low value, the possibility that the reacting molecules can have this amount of energy to initiate and proceed the reaction increases and the reaction rate also increases.
- Additionally, as the activation energy be of high value, the possibility that the reacting molecules can have this amount of energy to initiate and proceed the reaction decreases and the reaction rate also decreases.
Thus, we can answer this question as:
- You may normally expect a <em>slow</em> reaction if a <em>high</em> activation energy is required.
- You may normally expect a <em>fast</em> reaction if a <em>low</em> activation energy is required.
Ans:
from the product / reactant solution
from the environment when no solution is involved
Endothermic reactions are those reactions that proceed with the absorption of heat energy. In this case, the enthalpy of the reactants i.e. the initial energy is lower than that of the products. Therefore, energy needs to be supplied in order to break the bonds in the reactants and allow the reaction to proceed. This energy can be absorbed either from the environment when no solution is involved or from the product reactant solution.
For example, electrolysis of water which produces H2 and O2 is an endothermic reaction. Here, energy is absorbed by water in the form of electricity (current) to split it into corresponding products.
A mole of CO2 = 2 moles of O2
8 CO moles x 2 =
16 moles