Answer:
element hydrogen
Explanation:
There is only one stable atom that does not have neutrons, it is also an element hydrogen called protium. Protium, which contains a single proton and a single electron, is the simplest atom. Hope this helped!
Answer : The concentration of a solution with an absorbance of 0.460 is, 0.177 M
Explanation :
Using Beer-Lambert's law :

where,
A = absorbance of solution
C = concentration of solution
l = path length
= molar absorptivity coefficient
From this we conclude that absorbance of solution is directly proportional to the concentration of solution at constant path length.
Thus, the relation between absorbance and concentration of solution will be:

Given:
= 0.350
= 0.460
= 0.135 M
= ?
Now put all the given values in the above formula, we get:


Therefore, the concentration of a solution with an absorbance of 0.460 is, 0.177 M
A catalyst is a substance that increases the rate of a chemical reaction by lowering the activation energy without itself being consumed by the reaction.
Option c would be the correct answer