Answer:
Temperature.
Explanation:
Temperature is a measure of the average kinetic energy of a system.
Activation energy is the energy required by reactants to undergo chemical reaction and given products
Every reactant has some internal energy (sum of all kind of energy like kinetic energy, potential energy, mechanical energy, chemical energy etc). It needs some extra energy to undergo chemical reaction which is activation energy
All kinds of reaction whether exothermic or endothermic needs activation energy
Threshold energy = internal energy + activation energy
Answer:
active because he built up antibodies due to exposure to the flu
Explanation:
The Match of element to its name, atomic mass is as below
element symbol atomic mass or atomic number
Antimony Sb 51
sulfur S 32
Silicon Si 14
<u><em>Explanation</em></u>
From periodic table Antimony is a chemical element with symbol Sb and atomic number 51.
Sulfur on the other hand is a chemical element with symbol S and has a atomic mass of 32
silicon is an element with symbol Si and atomic number 14
