Above is a potential energy curve of a reaction. It depicts conversion of reactant to product via transition state.
When a catalyst is added to the reaction system, energy barrier of reaction decreases.
It must be noted that energy barrier reaction is defined as energy difference between reactant and transition state.
In present case, energy of reactant is 200 kj, while that of transition state (in absence of catalyst) is 650 kj
Thus, energy barrier of reaction is 650 - 200 = 450 kj
<span>Hence, system must absorb 450 kj of energy for the reaction to start, if no catalyst was used</span>
Answer:
Synthesis reaction:
Explanation:
Synthesis reaction:
It is the reaction in which two or more simple substance react to give one or more complex product.
A + B → AB
All other options are incorrect because,
Single replacement:
It is the reaction in which one elements replace the other element in compound.
AB + C → AC + B
Decomposition reaction:
It is the reaction in which one reactant is break down into two or more product.
AB → A + B
Combustion reaction:
In combustion reaction substances are react with oxygen and produces carbon dioxide and water.
Answer:
Conducting an experiment
Explanation:
This is because you must test your hypothesis by doing an experiment on the hypothesis
D.) Edmond Locard. He formulated the basic principle that there will be a transfer of material if one object touches another. This material may contaminate a specimen and make it useless as forensic evidence.
“A.) Leone Lattes” is <em>incorrect</em>. He developed a method for <em>blood typing</em> that relied on detection of the specific antibodies.
“B.) Mathieu Orfila” is <em>incorrect</em>. He worked to make <em>chemical analysis</em> a routine part of forensics.
“C.) Hsi Duan Yu” is <em>incorrect</em>. It is a 13th century Chinese <em>book </em>that many people consider to be the first known guide to forensic pathology.
Answer:
im pretty sure its A, if not so sorry!!
Explanation:
