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After creating a Beer's Law plot using standard solutions of Q, you determined the slope of Beer's Law to be 0.598 M-1. Your unk

Mashutka [201]

Answer:

$C=0.247~M$

Explanation:

We have to start this question with Beer's Law, $A=E*b*C*$ . On this equation we will have:

A=Absorbance

E=Molar absorption coefficient

b= Optical path

C=Concentration

So, the question is: what values of this equation we know?. If we check the question we have the absorbance value "0.148" additionally we have the slope of the plot, this slope is the molar absorption coefficient, therefore E=0.598 M-1, finally we have also the optical path. The optical path is 1 cm for all devices, so b=1 cm. With all these values we can calculate the concentration "C".

$C=\frac{A}{b*E}$

$C=\frac{0.148}{1*0.598}$

$C=0.247~M$

So, we will have a concentration of 0.247 M

I hope it helps!

4 0

3 years ago

List the four different sublevels and (given that only a maximum of two electrons can occupy an orbital) determine the maximum n

timurjin [86]

Answer:

l = 0 → s = 2 electrons;

l = 1 → p = 6 electrons;

l = 2 → d = 10 electrons;

l= 3 → f = 14 electrons.

Explanation:

For the quantum theory, the probability to find an electron is higher in the space region called orbital. It's impossible to determine where the electron is and his velocity at the same time (uncertainty principle). So, the theory determines four quantum numbers to characterize an electron, so it's easy to identify it:

n is the principal quantum number and identify the shell where the electron is. It varies from 1 to 7 and is represented by the letters K, L, M, N, O, P, and Q;

l is the azimuthal quantum number and identify the subshell (or sublevel) where the electron is. It varies from 0 to 3 and is represented by the letters s, p, d, and f;

ml is the magnetic quantum number, and it represents the orbital. It varies from -l to +l, passing by 0. Each orbital can have at least 2 electrons;

ms is the spin number and represents the spin of the electrons. It can be +1/2 or - 1/2.

Then, the sublevel s (l= 0) only has 1 orbital (ml = 0) so, it can have ate least 2 electrons; the sublevel p (l= 1) has 3 orbitals (ml = -1, ml= 0, ml = +1), so it can have at least 6 electrons; the sublevel d (l = 2) has 5 orbitals (ml = -2, ml = -1, ml = 0, ml = +1, ml = +2), so it can have at least 10 electrons; and the sublevel f (l = 3) has 7 orbitals (ml = -3, ml = -2, ml = -1, ml = 0, ml = +1, ml = +2, ml = +3), so it can have at least 14 electrons.

8 0

4 years ago

The feel, appearance, or consistency of a surface, substance, or fabric?

kozerog [31]

Answer:

texture

Actually, texture is defined as the physical composition of something, or the look and feel of fabric.

Explanation:

An example of texture is the smooth feeling of satin.

3 0

3 years ago

What makes an atom able to form a compound? * O different number of neutron than protons O unfilled outer electron shells O same

GaryK [48]

Answer:

same number of protons as electrons

Explanation:

The addition of a neutron can make an atom radioactive. When you change the number of protons in an atom, you will change the atom from one element to a different element. ... If you change the number of electrons in an atom, you will get an ion of the element.

7 0

3 years ago

Please help!! my grades dying 15 points

AysviL [449]

Answers-in-bold:

There are two common temperature scales. On the Fahrenheit scale, water freezes at 32 degrees. The Celsius scale divides the interval between the freezing and boiling points of water into 100 degrees.

4 0

3 years ago