All categories

2 years ago

Determine the concern traction in [M] of a solution that has an absorbance of 0.420

Chemistry

1 answer:

ZanzabumX [31]2 years ago

8 0

The Concenteration of a solution that has an absorbance of 0.420

is 5.27 μМ

<h3> </h3><h3>What is Absorbance ?</h3>

Absorbance (A), also known as optical density (OD), is the quantity of light absorbed by a solution.

Transmittance is the quantity of light that passes through a solution.

We can measures the absorbance of a sample using a spectrophotometer and the value is A = 0.420.

We can calculate the concentration of the sample using the Beer-Lambert law, which relates the attenuation of light to the properties of the material through which the light is travelling, through the following equation.

A = ∈ x c x d

Where ;

A = Absorbance
∈ = molar absorptivity of the species (7.96 × 10⁴ M⁻¹ cm⁻¹)
c = concentration
d = optical path length (1.00 cm)

Therefore,

c = A / ∈ x d

= 0.420 / 7.96 × 10⁴ M⁻¹ cm⁻¹ x 1.00 cm

= 5.27 μМ

Learn more about spectrophotometer here ; brainly.com/question/20956841

#SPJ1

You might be interested in

ASAP please and thankyou<br><br>Options:<br>pollen<br>pistil<br>purple<br>white

AURORKA [14]

Answer:

pistil

Explanation:

5 0

3 years ago

The atom with the same number of neutrons as 12C is 9Be. 11B. 13C. 14N.

julia-pushkina [17]

Answer : The atom with the same number of neutrons as $^{12}C$ is, $^{11}B$

Explanation :

The given atom is, $^{12}C$

Atomic mass number = 12

Atomic number = 6

Atomic number = Number of protons = Number of electrons = 6

Number of neutrons = Atomic mass number - Atomic number = 12 - 6 = 6

Now we have to determine the number of neutrons in the given options.

In atom, $^{9}Be$

Atomic mass number = 9

Atomic number = 4

Atomic number = Number of protons = Number of electrons = 4

Number of neutrons = Atomic mass number - Atomic number = 9 - 4 = 5

In atom, $^{11}B$

Atomic mass number = 11

Atomic number = 5

Atomic number = Number of protons = Number of electrons = 5

Number of neutrons = Atomic mass number - Atomic number = 11 - 5 = 6

In atom, $^{13}C$

Atomic mass number = 13

Atomic number = 6

Atomic number = Number of protons = Number of electrons = 6

Number of neutrons = Atomic mass number - Atomic number = 13 - 6 = 7

In atom, $^{14}N$

Atomic mass number = 14

Atomic number = 7

Atomic number = Number of protons = Number of electrons = 7

Number of neutrons = Atomic mass number - Atomic number = 14 - 7 = 7

Therefore, the atom with the same number of neutrons as $^{12}C$ is, $^{11}B$

6 0

3 years ago

True/false in order. I need serious help!

Reil [10]

All i know is that #7 is true

4 0

3 years ago

What is the relationship between a compound and the elements it is made from?

dalvyx [7]

<span>The compound may have properties that are very different from those of the elements it is composed from.</span>

6 0

3 years ago

A periodic table allows you to easily compare the properties of one element ( or a group of element to another element or group

AfilCa [17]

The statement above is TRUE.
The periodic table refers to the table of chemical elements, in which the elements are arranged in order of their atomic numbers in such a way that, similar elements appear in vertical columns. Elements in the same column usually have similar atomic structures and similar chemical properties. Thus, the periodic table allows one to easily compared the properties of one element to that of another one depending on the placement of the elements in the periodic table.<span />

4 0

3 years ago

Read 2 more answers