Answer:
D
Explanation:
everthing is made of matter so d is the only answer
Answer:
3.62×10³ L/mol
Explanation:
Beer-Lambert law relates the absorbance of a sample and its concentration. Its formula is:
A = ε×C×l
<em>Where A is absorbance of the sample, ε is molar absorptivity (A constant f each sample), C its concentration and l is path length</em>
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Now, the formula obtained was:
y = (3.62×10³ L/mol) x
<em>Where Y ia absorbance = A, x its concentration = C and 1cm is path length.</em>
You can write:
A = (3.62×10³ L/mol)×C×l
That means, molar absorptivity of your sample under the meaured conditions is:
<h3> 3.62×10³ L/mol</h3>
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Answer:
[H3O+] = 1.0*10^-12 M
[OH-] = 0.01 M
Explanation:
We can use the following equation to find the hydronium ion concentration. Plug in the pH and solve for H3O+.
pH = -log[H3O+]
<u>[H3O+] = 1.0*10^-12 M</u>
Now, to find the hydroxide ion concentration we will use the two following equations.
14 = pH + pOH
pOH = -log[OH-]
14 = 12 + pOH
pOH = 2
2 = -log[OH-]
<u>[OH-] = 0.01 M</u>