Answer: The Pauli Exclusion Principle
Explanation:
The electrons are filled in orbitals of equal energy with one electron entering each orbital until all the orbitals contain one electron with the same spin. The pairing of electrons take place thereafter.
The first electron in an orbital could have +1/2 spin or -1/2 spin. All of the electrons in singly occupied orbitals have the same spin so as to maximize total spin. which is given by Hunds rule.
Two electrons must have opposite spin and thus different spin quantum numbers is given by Pauli's exclusion principle.
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Answer: its D
Explanation:
because the earth sun and moon are all lined up that will cause a solar eclipse.
what is disproportionation reaction and give one example of it ?
Answer:
A disproportionation reaction is when a multiatomic species whose pertinent element has a specific oxidation state gets oxidized and reduced in two separate half-reactions, yielding two other products containing the same pertinent element. A convenient example is Mn2O3 becoming Mn2+ and MnO2 .
Please help ( there was no science option for subject)
This is due in a little while
Answer:
1 solar system, 2 , 3 , 4 hotter, 5 star, 6 the sun, 7 rotated, 8 planets, 9 orbits, 10 direction, 11 gravity, 12 revolve, 13 Mercury, 14 Neptune
Explanation:
I very sorry for not filling in everything but I have a small trick for you to help you out. So if you read out loud each sentence and put one of the words from the word bank in the sentence only a few will make sense. So if you read the second sentence out loud with one of the words that you have and one of them sounds correct then you fill it in. Also like your paper says one word can be used multiple times.
Your welcome :)
what best defines concentration
Answer:
Explanation:
Answer. In chemistry, concentration refers to the amount of a substance per defined space. Another definition is that concentration is the ratio of solute in a solution to either solvent or total solution. Concentration usually is expressed in terms of mass per unit volume.
Calculate the mass of 12.3 moles of MgSO4.
Answer:
614 034 kg
Explanation:
n = m/Mm
m = n * Mm
Mm(MgSO4) = 1 * 24.3 * 1 * 32.1 * 4 * 16 = 49921.92
m = 12.3 * 49921.92
m = 614 034 kg
ANSWER THE QUESTION BELOW FOR BRAINLEST AND 10 POINTS
Answer:
C
Explanation:
It just is, if you look online and conduct research you will see that compounds look just like number 3. It cannot be A or B.
Which of the following elements is a metalloid?
A. Silicon
B. Sulfur
C. Neon
D. Nitrogen
Answer:
A. Silicon
Explanation:
how are Distilled water and tap water alike?
Answer:
They are both water
Explanation:
One is cleaner than the other.
ASAP!!MARK BRAINLIEST! Mia wants to get her drinking water from an artesian well on her property. To make sure
that this water is drinkable, she must have a laboratory analyze it. Canadian standards state that the maximum permitted amount of boron in drinking water is 5 ppm. A laboratory analyzed a sample of 250 mL of water from Mia's well. This sample
contained 0.1 mg of boron.
Can Mia drink the water from her well?
O Yes
O No
Answer: yes
Explanation:
Answer:
yes
Explanation:
due to the properties of baron she should be fine
What is plasama?.......
Explanation:
Plasma is the clear, straw-colored liquid portion of blood that remains after red blood cells, white blood cells, platelets and other cellular components are removed. It is the single largest component of human blood, comprising about 55 percent, and contains water, salts, enzymes, antibodies and other proteins.
Blood plasma is a yellowish liquid component of blood that holds the blood cells of whole blood in suspension. It is the liquid part of the blood that carries cells and proteins throughout the body. It makes up about 55% of the body's total blood volume. It is the intravascular fluid part of extracellular fluid.
draw the condensed formula of 2 - methyl pentane - 1 ol ?
Answer:
Hope this helped!
Identify each of these substances as acidic, basic, or neutral.
___ pure water, pH = 7.0
___ lake water, pH = 6.5
___ baking soda solution, pH = 9
___ soapy water, pH = 12
Answers: neutral, acidic, basic, basic
Answer:pure water is neutral . Lake water is acidic. Baking soda and soapy water are basic.
Explanation: 7 is neutral. The higher on the ph scale like 1-6 is acidic. The lower on the scale 8-13 is base or alkaline.
Answer:
neutral
acidic
basic
basic
Based on what you have read, write two to three sentences explaining what James Cross Giblin probably wants readers to think about people who focus on difficult goals.
It didnt give me anything to read either
Answer:
Explanation:
The message of the book is that perseverance is necessary for success. If we focus on our goals and learn from others, we will be rewarded in the end.
It's a reap what you sow kind of meaning as well in which perseverance is key for accomplishing our goals.
Answer:
The message of the book is that perseverance is necessary for success. If we focus on our goals and learn from others, we will be rewarded in the end.
Explanation:
this is the answer frm edge
help plz! What chemical makes an object give off light?
Answer:
Its Chemiluminescence makes things glow by creating a chemical reaction.The electrons within the object become excited because of the reaction between two chemicals, and the electrons give off energy by blowing.
Maybe this helps I'm sorry if I got your answer wrong..
The metal grill of the barbecue is made of steel. Six properties of steel are given below. Which properties are needed for the metal grill?
Answer:
It is rigid.
It has a very high melting point.
Explanation:
It conducts electricity. It is rigid. It has a very high melting point. It is magnetic. It is shiny. It rusts.The two properties that are needed for the metal grill out of the options are its rigidity and high melting point.
The rigidity of the metal grill will enable it to hold materials to be grilled without problems while the high melting point will enable the grill to remain intact at the high temperature required for the successful grilling of certain food materials.
During all chemical reactions, charge, mass and energy are
(A) Condensed
(B) Conserved
(C) Decayed
(D) Decomposed
Answer:
(B) Conserved
Explanation:
what causes atoms to react with each other?
a. a state change
b. a chemical equation
c. a physical change
d. a chemical reaction
Answer:
You are right, it's D
A chemical Reaction causes atoms to react with each other. Hence Option (D) is correct.
What is Chemical Reaction ?
A process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
Therefore, A chemical Reaction causes atoms to react with each other. Hence Option (D) is correct.
Learn more about chemical reaction here ;
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Which reaction is reversible and could reach dynamic equilibrium?
O A. Burning a wood log
O B. Frying an egg
O C. 3H2 + N2 = 2NH3
O D. 2Mg + 02 → 2Mgo
Answer:
The correct answer is - option C. 3H2 + N2 = 2NH3
Explanation:
If in a chemical reaction the rate of the forward reaction and the rate of reverse reaction are equal, this is called dynamic equilibrium. Due to this equal rate of both side reactions, there is no change in the system. In this type of reaction, the concentration of reactants and products remain constant and the overall reaction is continuous.
Dynamic reactions can be reached by reversible reactions such as 3H2 + N2 = 2NH3 where the concentration of hydrogen and nitrogen and concentration of the ammonia remains constant and rate of the both side are equal.
Answer:
3H2 + N2 = 2NH3
Explanation:
mass is the amount of
Answer:
Mass is a measure of the amount of matter in a substance or an object
Explanation:
we learned about this on school
What is best classified as a physical change?
Answers)
A: photosynthesis
B:Digestion
C:Exercise
D:Boiling
Answer:
D
Explanation:
Answer:D:Boiling
Explanation:
9. A family is driving to a nearby city. If they travel an average 68 miles per hour for 3.2 hours how
many miles have they gone?
All you have to do is multiply 68 miles and 3.2 hours. It will give you the answer, 217.6 mph.
68x3.2=217.6 miles per hour.
True or False. Frogs have to drink a lot of water.
Answer:
frogs do require alot of water, although they do not drink it, they absorb it through their skin.
Explanation: so, it is false.
What is this graph showing?
Explanation:
It's a distance-time graph showing the speed of an object
What is the meaning of CPI?
Answer:
(CPI) Consumer Price Index
Explanation:
A consumer price index measures changes in the price level of a weighted average market basket of consumer goods and services purchased by households. A CPI is a statistical estimate constructed using the prices of a sample of representative items whose prices are collected periodically.
Determine the change in energy when an electron transitions from n= to n=5?
Answer:
ΔE = 13.056 ev
Explanation:
Energy associated with nth state is,
En = -13.6/n²
For n = 1
E₁ = -13.6 / 1²
E₁ = -13.6/1
E₁ = -13.6 ev
Kinetic energy of electron = -E₁ = 13.6 ev
For n = 5
E₅ = -13.6 / 5²
E₅ = -13.6/25
E₅ = -0.544 ev
Kinetic energy of electron = -E₅ = 0.544 ev
Wavelength of radiation emitted:
ΔE = hc/λ = E₅ - E₁
by putting values,
ΔE = -0.544ev - (-13.6 ev )
ΔE = 13.056 ev
in which shell duplet rule is applied, why?
Answer:
In first shell duplet rule is applied because first shell contains maximum 2 electrons
Explanation:
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Which of the following could be a characteristic of the fossil that is most closely related to humans?
S-shaped back bone
Arms longer than legs
Water-dwelling
Tree-dwelling
When an unbalanced force acts on an object, the change in the object's _______ or _______ depends on the size and direction of the force.
A.
position; mass
B.
speed; direction
C.
mass; speed
D.
direction; mass
Answer:
B
Explanation:
Question 21
2 pts
(02.04 MC)
How does a change in temperature affect the rate at which a lollipop dissolves in water? (2
points)
O Changing the temperature of water should have no effect on the rate at which the lollipop dissolves.
O Decreasing the temperature of water increases the surface area of the lolipop, making it more
O Increasing the temperature of water decreases the rate at which the lollipop dissolves.
O Increasing the temperature of water increases the speed at which the lollipop dissolves.
soluble.
37. An atom is electrically neutral because the
(1) number of protons equals the
number of electrons
(2) number of protons equals the
number of neutrons
(3) ratio of the number of neutrons
to the number of electrons is 1:1
(4) ratio of the number of neutrons
to the number of protons is 2:1 37
Answer:
(1) number of protons equals the
number of electrons
Explanation:
