Answer:
(a) 140 years
(b) 3.125 pounds
Explanation:
<u>QuestIons</u>
(a) How long is five half-life
(b) How much radioactive strontium is left after five half-life
Given that:
Half-life is about 28 years; &
There are 100 pounds of this radioactive waste
Five half-life will be;
= 28 × 5
= 140 years
The amount of radioactive remaining after five half-life is:
= 100 × 0.03125
= 3.125 pounds
The reaction is:
<span>4Li(s) + O2 (g) = 2Li+ + 2O-2(s).
The oxidizing agent is the one that is being reduced which is oxygen where the charge changed from neutral to -2 while the reducing agent is the on being oxidized which is lithium where the charge change from neutral to +1.</span>
Answer:
Enzyme function is dependent on the three-dimensional structure or conformation of the enzyme
Explanation:
Enzyme are biological catalysts.
So they do alter the path of the reaction where the free energy change (or activation energy) is low then the non enzymatic pathway.
Thus the statement
Enzymes alter the free energy change (ΔG) of the reactions which they catalyze : True
It is known that for enzyme we function they need an optimum temperature and pH condition so the statement
Enzyme function is dependent on the pH and temperature of the reaction environment: true
This is also true that
Enzyme activity can be inhibited if the enzyme is bound by a noncompetitive inhibitor.
The false statement is : Enzyme function is dependent on the three-dimensional structure or conformation of the enzyme
Answer:
The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotopе). An element does not have an absolute atomic mass.
<em>Hope</em><em> this</em><em> </em><em>helps</em><em> </em><em>:</em><em>)</em>
