Answer:
The order of a element in period 2 that has 6 valence electrons is:
1s²2s²2p²
Explanation:
The Electronic Configuration of the elements is the arrangement of all electrons of an element in energy levels and sub-levels (orbitals).
There are 7 energy levels, numbered from 1 to 7, and in which electrons are distributed, logically in order according to their energy level. Electrons with less energy will be spinning at level 1. Each level is divided into sub-levels. These sub-levels into which each level is divided can be up to 4. These 4 sub-levels are called: s, p, d, f. In the sub-level s there can only be a maximum of 2 electrons, in p there can be a maximum of 6 electrons, in the sub-level d 10 electrons and finally in the sub-level f there can be a maximum of 14 electrons.
In level 1 there is only one sub-level, which will be the s. In level 2 there are 2 sub-levels, the s and the p. At level 3 there are 3 sub-levels s, p and d. And at level 4 there are 4 sub-levels, the s, the p, the d and the f.
Aufbau's principle is a principle of atomic physics, which explains how electrons are accommodated in their orbits around the nucleus of the atom. This principle states that the filling of these orbitals occurs in increasing order of energy, that is, from the orbitals of lower energy to those of higher energy.
The simplest of the sub-levels is 1s. If you fill the 1s you can start filling the 2s. After the 2s sub-level is satisfied, the 2p can begin to fill and so on.
So, the order of a element in period 2 that has 6 valence electrons is:
1s²2s²2p²
Please help!!! Will give brainlist
why is the term "ionic" used when describing compounds formed from a metal element and a nonmetal element?
The term ionic is used when compounds are formed from a metal element and non metal element because of the transfer of electrons from the metallic to the non metallic elements to become ions
Ionic combination is the process of chemical combination that mostly happens between metals and nonmetals in which metals lose electrons and non metals gain electrons.
Metals are reducing agents because they are highly electropositive. Hence they become ionized by losing electrons to electronegative elements like the non metals
Non metals are oxidizing agents because they become ionized by gaining electrons from electropositive elements, mostly metals.
Therefore, the term ionic is used when compounds are formed from a metal element and non metal element because of the transfer of electrons from the metallic to the non metallic elements to become ions
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what are 3 types of mutations
1- Base substitutions.
2- Deletions.
3- Insertions.
extremely hot.When a student went to open the car doo , he burned his finger. What two forms of energy were responsible for the student burning his fingers
Answer:
radiation and conduction
Explanation:
During a warm summer day, a car became extremely hot. When a student went to open the car door, he burned his fingers. What two forms of energy were responsible for the student burning his fingers?
Solution:
Heat is the transfer of energy from a warmer object to a cooler object. For heat transfer to occur, there have to be a difference in temperature between two objects.
Heat can be transferred in three ways: by conduction, by convection, and by radiation.
Conduction is the transfer of thermal energy between bodies through direct contact. Convection is the transfer of thermal energy through the movement of heat in a liquid or gas. Radiation is the transfer of thermal energy through thermal emission by electromagnetic waves.
During a warm summer day, The sun makes the car to become hot through energy transfer from the sun to the car. When the student touch the car, there is heat transfer as a result of conduction.
4. Proteins make up our bodies ?
Please help ASAP I’ll mark you as brainlister:(((!!!!!!!!
Answer:
c. Gas particles don't interact
Explanation:
Ideal gas particles do not interact with each other.
The gas molecules do not interact with each other except for colliding with each other. Gases expand to completely fill a container; they would not if they were attracted to each other. That being said, they obviously still do, as a result of Dalton's Law.
QUICK HURRY FIRST ANSWER GETS BRAINLIST!!!! Why is it important to add coefficients to the
reaction equation to make it balanced? (Hint: your
answer should talk about the law of conservation of mass)
find the empirical formula of a compound containing 32.0g of bromine and 4.9 of magnesium.
Explanation:
32.0g×1 mole/79.9g = 0.401 mole Br
ratio 1:2
MgBr2
9g × 1mole/24.31= 0.20 mole Mg
The job of the ______ is to hold all of the parts of a cell together
Answer:
cell membrane
Explanation:
it holds everything together
1. Which layers from North America are the same age as layers from Europe? Use the number or letter of the layer to identify it?
Answer:
layer 1 is the same age as layer C
layer 3 is the same age as layer D
1. Hg(OH)2 + Ag →
what is the answer for this?
Answer: 2Ag + 2H2O + HgCl2 → 2AgCl + H2 + Hg(OH)2
Explanation: hope this helps, if so give me brainliest thanks!
Find V2, M1 = 3.00M, V1 = 0.500L, M2 = 0.100M
Answer:i think its 1974
Explanation:
Pls help me with this problem
Answer:
B
Explanation:
The triple point is the temperature and pressure in which the three states or phases of a matter coexist with one another.
For example, the triple point of pure water is 0.01°C and 4.5mmHg
Select odd one out.
I) O
II) Na
III) Cu
IV) Ag
Explanation:
0 is the odd one...............
and rest are metals and they lose electron and 0 gain electron and is non metal
what are the products of the reaction below?:
calcium chloride+ silver nitrate
Answer:
Calcium chloride react with silver nitrate to produce calcium nitrate and silver(I) chloride.
Answer:
Silver Chloride and Calcium Nitrate
Explanation:
calcium chloride + silver nitrate = Silver Chloride + Calcium Nitrate
^ ^ ^ ^
The Reactants The Products
2AgNO3 + CaCl2 -> 2AgCl(ppt) + Ca(NO3)2
I am trying to figure out what blood type the father of my son could have since my son and I are both type A. Also, my brother is type o and my mom is A.
Answer:
It could probably be O.
Explanation:
Just like eye or hair color, our blood type is inherited from our parents. Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A.
Which statement best describes a chemical reaction in which energy is released?
The chemical reaction in which energy is released is referred to as an Exothermic reaction.
What is an Exothermic reaction?This is the type of reaction in which the overall standard enthalpy change is negative.
This is however as a result of the energy being released when a chemical reaction takes place under certain conditions.
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How could we stop an asteroid that we know was going to hit Earth?
Pls help ASAP
Answer:
An object with a high mass close to the Earth could be sent out into a collision course with the asteroid, knocking it off course. When the asteroid is still far from the Earth, a means of deflecting the asteroid is to directly alter its momentum by colliding a spacecraft with the asteroid.
Hope it helps!!
Answer:
1. deflect it 2. grab it with a claw 3. blast it to smithereens
Explanation:
How much heat is absorbed by a 112.5 g sample of water when it is heated from 12.5 °C to 9°C? (Specific heat capacity of water is 4.184 J/g °C)
Answer:
–1647.45 J
Explanation:
From the question given above, the following data were obtained:
Mass (M) = 112.5 g
Initial temperature (T₁) = 12.5 °C
Final temperature (T₂) = 9°C
Specific heat capacity (C) = 4.184 J/g°C
Heat (Q) absorbed =?
Next, we shall determine the change in temperature. This can be obtained as follow:
Initial temperature (T₁) = 12.5 °C
Final temperature (T₂) = 9°C
Change in temperature (ΔT) =?
ΔT = T₂ – T₁
ΔT = 9 – 12.5
ΔT = –3.5 °C
Finally, we shall determine the heat absorbed. This can be obtained as follow:
Mass (M) = 112.5 g
Change in temperature (ΔT) = –3.5 °C
Specific heat capacity (C) = 4.184 J/g°C
Heat (Q) absorbed =?
Q = MCΔT
Q = 112.5 × 4.184 × –3.5
Q = –1647.45 J
write down the formula for B
example:
Hydrogen + Fluorine = Hydrogen Fluorine
help
Answer:
P³⁻ + Cl⁻ --> PCl₃
Explanation:
PCl₃: phosphorus trichloride. prefix in front of chloride is "tri"–meaning three.
Answer:
phosphorus + chlorine = phosphorus trichloride
(He asked for word equation)
1. Which one does not belong the the group?" helium iodine radon or krypton
Answer:
Iodine
Explanation:
Helium, Radon, and Krypton are all in group 18 but Iodine is not
(it's in group 17)
:)
HELP ASAP
0.0000000000012 s=[?]ps
Answer:
No, Micah is not correct. Since there are equal numbers of people in each group who drive and who do not drive, the relative frequency for each is 50%. Because the relative frequencies are the same, there is no association between the variables.
Explanation:
Answer:1.2 picoseconds
Explanation:
Cells are made of many parts, or , that help the cell do its job. Each cell organelle has a specific function, or
Answer:
Organelles; role.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells. Generally, cells have the ability to independently replicate themselves. In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles with their respective functions in all living organisms such as trees, birds, and bacteria include;
1. Nucleus : it controls all the activities taking place in the cell and the synthesis of proteins.
2. Mitochondria : it provides all the energy required in the cell by transforming energy forms.
3. Lysosomes : they are responsible for absorbing materials and breaking the materials taken in by the cells.
4. Chromosomes : they give sets of instructions for the synthesis of products.
5. Ribosomes : they are involved in the build up of proteins.
6. Endoplasmic Reticulum : this is where the ribosomes perform their tasks.
7. Cytoskeleton : they help to maintain and support the shape of the cells.
8. Vesicles : they ensure proteins are properly transported to the right and exact location.
9. Golgi apparatus : it prepares the protein for export by chemically tagging them.
10. Cell membrane : is the wall of the cell and typically controls what leaves and enters the cell.
Hence, cells are made of many parts, or organelles, that help the cell do its job. Each cell organelle has a specific function, or role.
Which of these organism do you think would have a niche similar to that of an African fish?
Answer:
B. the American bald eagle
HELP
What is the total pressure of a wet gas mixture at 60°C, containing water vapor, nitrogen, and helium. The partial pressures are
Pnitrogen - 53.0 kPa and Phelium = 25.5 kPa.
Answer:
98.4 kPa
Explanation:
Step 1: Given and required data
Partial pressure of water vapor at 60°C (pH₂O): 19.9 kPa (this info is tabulated)Partial pressure of nitrogen (pN₂): 53.0 kPaPartial pressure of helium (pHe): 25.5 kPaStep 2: Calculate the total pressure of the gaseous mixture
The total pressure of the gaseous mixture (P) os equal to the sum of the partial pressures of the gases that form it.
P = pH₂O + pN₂ + pHe
P = 19.9 kPa + 53.0 kPa + 25.5 kPa = 98.4 kPa
The total pressure of the wet gas mixture is 98.4 KPa
Dalton's law of partial pressureThis law states that at constant temperature, the total pressure of a mixture of gases is equal to the sum of the partial pressure exerted by each gas. Mathematically, it is expressed as
Total pressure = partial pressure of A + partial pressure of B
How to determine the total pressure Partial pressure of water vapor at 60°C (pH₂O) = 19.9 KPa Partial pressure of nitrogen (pN₂) = 53.0 KPa Partial pressure of helium (pHe) = 25.5 KPa Total pressure (P) =?P = pH₂O + pN₂ + pHe
P = 19.9 + 53 + 25.5
P = 98.4 KPa
Learn more about partial pressure:
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How many moles of methane gas are in 44.8 L of CH at STP?
Answer:
2 mol CH 4
Explanation:
43.8 x L
---------------- = 2 mol CH 4
22.4 x L x mol - 1
Calculate the volume of 12.0 g of helium at 100° C and 1.2 atm.
Answer:
the answer I think is 76.5L
what is the SI unit that represents the amount of substance?
Answer:
Mole
Explanation:
In solids, amount of substance is given by;
n = mass/molar mass
n will have a unit of mole
However, in liquids, amount of substance is;
n = concentration × volume
Again, n will be in mole
Thus, the SI unit that represents the amount of substance is mole
Why do fossil fuels such as crude oil contain varying amounts of nitrogen and sulfur? Pls help
Answer:
See explanation
Explanation:
Fossil fuels are formed from the remains of plants and animals that have been subjected to intense pressure during the carboniferous era. These plants and animal remains undergo the process of fossilization to yield the fossil fuels we have today such as crude oil.
Living organisms are composed of elements which include nitrogen and sulphur. Since these fuels originated from dead organisms, they also contain these elements found in living organisms.
Hence, fossil fuels such as; coal, crude oil, and natural gas contain 0.05%-0.5% sulfur and 0.5%-2.1% nitrogen.
Plz helpppp^^^^^^^^^^
