<h2><u>My </u><u>Answer</u><u> </u></h2>
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My Explanation</h2>
Although caffeine (a stimulant found in coffee and tea) is a relatively complicated molecule, it's only eight atoms of carbon, ten of hydrogen, four of nitrogen and two of oxygen – C8H10N4O2. This kind of representation is called a molecular formula – it tells us what kind of atoms we have, and how many of each.
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Answer:
We cannot use hydrogen peroxides and chlorine bleach as a natural indicators because they are dissociated into its ions and changes their pH of dissociation.
Explanation:
Natural indicators are organic material that they formed by natural tissues and these are cannot be broken down into the further ions. Hence the pH value is cannot be vary.
If we use hydrogen peroxide and chlorine beach as as natural indicators these are further broken down into its ions and change their pH of dissociation.
Hence, we cannot used as a natural indicators.
C. H20 is reduced
The first equation has h20 part of it, then the second part doesn't have the substance h20
Answer:
0.174 M
Explanation:
The same can be solve by using Nernst's equation
The Nernst's equation is:
For silver cell
n= 1
As both the compartments have silver nitrate solution,t the standard emf of cell will be zero.
Given
Ecell = 0.045
[Anodic compartment]= 1 M
Putting values
Taking antilog and solving
[AgNO3]=0.174 M
The first step is always to figure out which formula you are going to use. Since you are given the moles, volume, temperature, and are asked for pressure, you will obviously be using the ideal gas law.
P = ?
V = 133 L
n = 1.7
R = 8.314
T = 393K
P = 41.76378496 kPa
Last step is to convert to mmHg
= 41.76378496 kPa x
= 313.2541482
= 3.1 x 10² mmHg