PLEASE HELP!! 10 POINTS!
what could the fourth quantum number of a 2s^2 electron be?
Answers
Answer:
D. ms=+1/2.
Explanation:
Hello there!
In this case, since the quantum numbers are known as:
* Principal quantum number (n) which cannot be zero. The allowed values of n are therefore 1, 2, 3, 4, and so on.
* Angular quantum number (l) is able to be any integer between 0 and n-1. If n = 2, for example, l can be either 0 or 1.
* Magnetic quantum number (m) is able to be any integer between -l and +l. If l = 3, m can be either -3, -2, -1, 0, +1, +2 or +3.
* Spin Quantum Number (ms): ms = +½ or -½. Accounts for the orientation of the spin axis of an electron as it is able to spin in only one of two directions.
Thus, since the fourth quantum number is ms, spin, we infer that the answer is D. ms=+1/2 because it represents the positive spin on 2s^2.
Best regards!
Answer: ms = +1/2
Explanation: a pex
Related Questions
The four structures that both prokaryotic and eukaryotic cells have are
Answers
Hello! Greetings from Turkey! :)
* Cell membrane
* Cytoplasm
* DNA and RNA
* Ribosome
GOOD LUCK!!
Pls help! DO NOT GIVE ME A LINK AS AN ANSWER!
Recall the equation M, V1 = M2V2. Based on the presence of this amount of copper sulfate, complete the table to predict the concentration of the solution as water is added to the tank or removed from it. Don't actually change the amount of water in the tank yet. Type the correct answer in each box. Use numerals instead of words. Express each answer to two significant figures e. Volume (L) Concentration (mol/l) 1.0 0.80 0.60 0.50 0.20
Answers
Answer:
(top to bottom)
0.50
0.63
0.83
1.0
1.3
2.5
Explanation:
Answer: Answers are from top to bottom (Edmentum)
0.50
0.63
0.83
1.0
1.3
2.5
Explanation:
Which of the following changes will lead to an increase in the rate of dissolving.
a. increasing the surface area of the solute
b. stirring the solution
c. increasing the temperature of the solution
d. All of the above
Answers
Ultraviolet light from the Sun can
Answers
Answer:
Can cause sunburn, premature aging of the skin and damage molecules in skin cells
Explanation:
Answer:
pueden afectar directo al adn de las celulas de la piel y son causantes de las quemaduras del sol
Explanation:
Which unit is commonly used for measuring pressure?
O m3
O bar
O N/m3
O Celsius
Answers
Answer:
3
Explanation:
Answer:
bar
Explanation:
yes
if the original volume of a gas was 300 ml at 0.250 atm and 400.0 k what is the volume of the gas at 2.00 atm
Answers
Answer:
the answer is 18.75
pls help !! - Using the graph below, what is the rule for a translation form point A to point D?
Answers
Answer:
Graph? Question is incomplete.
1
The table gives the composition of three particles
particle
number of
protons
number of
electrons
number of
neutrons
А
15
16
B
15
16
с
15
17
(a) What is the evidence in the table for each of the following?
(i) Particle A is an atom.
(ii) A, B and C are all particles of the same element
Answers
Answer:
the answer is wurkey churkey since the birdy is really really cute
Explanation:
if the birdy was not squishy then it would have died already?!?!?
What are the three components of a circuit
Yup I’m a kid-
Answers
Answer:
it's B(Energy source,conductor and receiver)
Explain Newton’s third law of motion.
Answers
Answer:
His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.
Explanation:
please help
sorry if it’s a little hard to read
Answers
Explanation:
Potassium=19, metal
Nitrogen=7, nonmetal
Silver=47, metal
Iron=26, metal
Sodium=11, metal
Magnesium=12, metal
Oxygen=8, nonmetal
Copper=29, metal
Calcium=20, metal
Chlorine=17, nonmetal
Plz help if you can!
Name these Ionic Compounds: ( Al is Aluminum and Cl is chlorine)
1. AlI3
2. K3N
3. Cs2O
4. CaCl2
5. LiBr
Answers
Answer:
Aluminum Iodide
Potassium Nitride
Caesium Oxide
Lithium Bromide
Explanation:
How long does it take the Earth to move from Point A to Point C?
Answers
Answer:
the answer should be six months
How does molecular shake affect polarity?
Answers
Answer:
I believe its A
Explanation:
A molecule that has a symmetrical shape will be a nonpolar molecule.
5. The pictures below show four kinds of seeds. Which seed has a structure that
allows it to be carried away by wind?
A Bean seed
B Watermelon seed
C Dandelion seed
D Acorn
Answers
Answer:
Dandelion seed
Explanation:
(I learnt it in camp)
Answer:
C Dandelion Seed
Explanation:
Dandelion Seed are light enough to be carried by the wind.
8. Calculate the pH of a solution if the [OH-] concentration is 0.015 M.
A) 1.82
B) 8.82
C) 12.18
D) 4.32
Answers
Answer:
1.82
Explanation:
pH is given by the equation
The car is heading north covering a distance of 500 meters in 20 seconds. What is the car’s velocity?
Answers
Since it is traveling 500 meters in 20 seconds, you would divide the two.
500/20=25
Have a nice day!
How many liters of ammonia gas can be formed from 24.5 L of hydrogen gas at STP?
Answers
Answer: 16.3 L of ammonia gas can be formed from 24.5 L of hydrogen gas at STP
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
The balanced chemical equation is:
[tex]3H_2+N_2\rightarrow 2NH_3[/tex]
According to stoichiometry :
[tex]3\times 22.4=67.2L[/tex] of [tex]H_2[/tex] produce = [tex]2\times 22.4=44.8L[/tex] of [tex]NH_3[/tex] at STP
Thus 24.5 L of [tex]H_2[/tex] will produce= [tex]\frac{44.8}{67.2}\times 24.5=16.3L[/tex] of [tex]NH_3[/tex] at STP
Thus 16.3 L of ammonia gas can be formed from 24.5 L of hydrogen gas at STP
Identify the type of reaction occurring based on the description
below:
"Sodium hydroxide reacts with iron (III) chloride."
What type of reaction is this?
a Double displacement
b
Decomposition
C Synthesis
d Combustion Reaction
Answers
Answer:double displacement
Explanation:I just did it
11. A mixture of magnesium powder and lead (II) Oxide will react vigorously when heated
but no reaction occurs when a mixture of magnesium oxide and lead powder are heated,
a) Explain the observation.
b Which of the two substances, magnesium or lead(IT) Oxide is;
i) Oxidized in the reaction?
ii) Oxidizing agent?
C Which is the most reactive metal
Please help
Answers
Answer:
Explanation:
The reaction is violent but safe, provided the procedure is followed exactly. ... Chemicals. Magnesium powder (HIGHLY FLAMMABLE), 0.25 g (note 4); Copper(II) oxide powder ... top must NOT be hot when the magnesium powder/copper oxide mix is added. ... After one or two minutes (be patient) a vigorous reaction occurs.
if the hydrogen ion concentration [H+] in a solution is 1.87 x 10^-11M what is the [OH-]
Answers
By using pH formula, the concentration of hydroxyl ion [OH-] will be 5.3 ×[tex]10^{-4}[/tex] M.
What is pH?
The pH scale is a measurement of hydrogen ion concentration that is used to determine the acidity as well as alkalinity of a solution.
Calculation of [OH-] by using formula of pH.
Given data:
[H+] = 1.87 x [tex]10^{-11} M[/tex]
[OH-] = ?
Calculation of [OH-] is shown below:
It can be calculated by using the formula:
pH = -log [H+]
Put the value of concentration of hydrogen ion [H+] in above formula.
pH = -log (1.87 x [tex]10^{-11} M[/tex])
pH = -log (1.87) -log ( [tex]10^{-11} M[/tex])
pH = -0.27 +11
pH = 10.73
Now, use the formula, pH +pOH = 14
pOH = 14 - pH
pOH = 14 - 10.73
pOH = 3.27
Now, use formula pOH = -log [OH-]
[OH-] = [tex]10^{-pOH}[/tex]
[OH-] = [tex]10^{-3.27}[/tex]
[OH-] = 5.3 ×[tex]10^{-4}[/tex] M
Therefore, the concentration of hydroxyl ion [OH-] will be 5.3 ×[tex]10^{-4}[/tex] M.
To know more pH
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The reactant which is consumed completely in a reaction is called the excess reactant. TRUE or FALSE
Answers
Answer:
False
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which scale is most precise?
which scale is most accurate?
Answers
It’s most precise bc it goes to thousandths but it’s also closest to 1 making it most accurate.
HELP ASAP! 20 POINTS
Answers
Which property is NOT used to separate a mixture?
Answers
Answer:
Conductivity.
Explanation:
You place a balloon in a closed chamber at standard temperature and pressure (STP). You triple the chamber pressure.
What happens to the balloon?
The volume stays the same.
The volume increases to three times its original volume.
The temperature must also change for the volume to change.
The volume decreases to one-third of its original volume.
Answers
Answer:
it pops?
Explanation:
Arteries
have very thin walls
o appear bluish in color
o carry blood away from the heart
connect capillaries and veins
Answers
Answer:
carry blood away from the heart
List the methods of separation used in water purification...... ( HELP PLEASE )
Answers
Answer:
I can list four. These are the main ones.
Bolling
Filtration
Distillation.
Chlorination
Explanation:
A container has a volume of 5.85 L and a pressure of 4.25 atm. What will the volume be
If the containers pressure is changed to 2.75 atm?
Answers
Answer:
9.04 LExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we're finding the new volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
We have
[tex]V_2 = \frac{4.25 \times 5.85}{2.75} = \frac{24.8625}{2.75} \\ = 9.0409...[/tex]
We have the final answer as
9.04 LHope this helps you
4. In the following reaction: 2NaN3 decomposes to form 2Na + 3N2. If 500 grams of NaN3 decomposes to form 320 grams of Na, how much Na is produced?
180 grams
320 grams
500 grams
Answers
mass of NaN₃ → moles of NaN₃ → moles of Na → mass of Na
500 g NaN₃ ×
1
mol NaN₃
65.01
g NaN₃
= 7.69 mol NaN₃
7.69 mol NaN₃ ×
2
mol Na
2
mol NaN₃
= 7.69 mol Na
7.69 mol Na ×
22.99
g Na
1
mol Na
= 176.8 g Na
Using Mass of N₂
You must make the following conversions:
mass of N₂ → moles of N₂ → moles of Na → mass of Na
323.20 g Na ×
2
mol N₂
28.01
g N₂
= 11.539 mol N₂
11.539 mol N₂ ×
2
mol Na
3
mol N₂
= 7.692 mol Na
7.692 mol Na ×
22.99
g Na
1
mol Na
= 176.85 g Na