Air pressure is greatest near the surface of the Earth in the _______.
Question 7 options:
Thermosphere
Mesosphere
Troposhere
Exosphere
An electromagnet is created by
A. putting a piece of soft iron in an outlet.
B. brushing a piece of steel with a soft cloth.
C. running electric current through a coiled, conductive wire.
D. rubbing two pieces of metal together quickly.
A. putting a piece of soft iron in an outlet
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Answer:
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Explanation:
If an atom has four electrons in the outer energy level, how will it form a bond?
A. It will gain electrons.
B. It will share electrons.
C. It will not form a bond.
D. It will lose electrons.
Answer:
b . Thunder formed between carbon atoms and other elements because carbon has four valence electrons it made take for Coral Bell and funds to obtain a complete outer energy level.
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Answer:
White-Blue-Red-Yellow-Orange
Explanation:
The sun emits all colors of the rainbow more or less evenly.
⚠️ I'm not 100% sure but for sure there is White ⚠️
Explain what a product is
Answer:
an article or substance that is manufactured or refined for sale. or a thing or person that is the result of an action or process.
Explanation:
Answer:
product is the item offered for sale. A product can be a service or an item. It can be physical or in virtual or cyber form. Every product is made at a cost and each is sold at a price. The price that can be charged depends on the market, the quality, the marketing and the segment that is targeted.
electronegativities of the elements be, mg, ca, and sr follow a specific trend within their group. based on this trend, the atoms of which element will have the least attraction for an electron?
Based on the trend of electronegativities values of the elements Be, Mg, Ca, and, Sr within their group (increasing from bottom to top), the atoms of the element Sr will have the least attraction for an electron.
We need to remember that electronegativity indicates the affinity or attraction of an element for an electron. Hence, the higher the electronegativity, the higher the attraction of that element for an electron.
The values of electronegativities of the given elements are the following:
Be = 1.57
Mg = 1.31
Ca = 1.0
Sr = 0.95
We can see that the increasing trend of electronegativities in this group is from the bottom to the top, having the Sr with the lowest electronegativity value and the Be with the highest.
This trend is related to atomic size, the larger the atomic size, the lower the electronegativity because the electron in the outermost shell will feel less attraction towards the nucleus of an atom. In a group of the periodic table, the size of an atom will increase from top to bottom.
Therefore, according to the said above, the atoms of the Sr will have the least attraction for an electron (it has the lower electronegativity value).
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If 1000 ml of linseed oil has a mass of 992 g, calculate the density of linseed oil.
Answer:
0.99 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 992 g
volume = 1000 mL
We have
[tex]density = \frac{992}{1000} \\ = 0.992[/tex]
We have the final answer as
0.99 g/mLHope this helps you
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Answer:
may be the answer will be study the structure of the earth and resources.
during the process of nuclear decay what form of energy is released?
Answer:
Mostly Kinetic
Explanation:
Minerals have:
A. an exact chemical composition, such as SiO2.
B. a small range in chemical composition, such as (Mg, Fe)2SiO4
C. a large range in chemical composition, such as (Mg, Fe, Al, K, Na)2SiO4
D. no set chemical composition.
Answer:
B
Explanation:
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In San Diego (elevation 15 feet), you
step on a scale and weigh 115
pounds, using the same scale in
Denver, Colorado (elevation 5,280
feet) you would weigh
A. more than in San Diego
B. less than in San Diego
C. the same as in San Diego
Answer: b
Explanation:
It will weigh less than in San Diego. So, the correct option is (B).
What is Elevation?The elevation of a geographic location is defined as its height above or below a fixed reference point known as a geoid which is a mathematical model of the Earth's sea level as an equipotential gravitational surface.
Height is defined as the vertical distance of a point on a horizontal surface while Elevation is the height of a point above (or below) sea level.
As the Elevation is higher, the weight will be less, whereas if the Elevation is less, then the weight will be more. For example, the elevation in San Diego is 15 feet, so the weight is 115 pounds, while the elevation in Denver, Colorado, is 5,280 feet, so the weight would be less than 115 pounds.
Thus, it will weigh less than in San Diego. So, the correct option is (B).
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Is fresh squeezed lemonade a homogeneous or heterogeneous mixture
Answer: This makes the lemonade a homogenous mixture
Explanation:
If the freshly squeezed lemonade is made by squeezing lemons to extract the sour juice and mixing this with water and sugar all the substances in the mixture finally created are in the same phase.
Which substance tends to form anions when bonding with other elements?
oxygen
calcium
argon
sodium
Answer:
A) Oxygen
Explanation:
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A. If the statement is true, write T; if the statement is false, write F.
am not sure
Explanation:
1T
2T
3T
4F
5F
6F
7F
8T
9T
10T
A formula unit represents the simplest ratio of elements in a
Answer:
formula unit
Explanation:
formula unit represents the simplest ratio of elements.
why does the reaction of anthracene with maleic anhydride needs to be kept away from water?
Answer:
Water separates the two reactants into two layers, stopping the reaction.
Explanation:
Maleic anhydride can and will react with water.
The reaction between maleic anhydride and anthracene is a Diels Alder reaction. This type of reaction is a cycloaddition reaction.
What is Diels Alder reaction?The Diels Alder reaction is a member of a class of reactions called cycloadditions. This reaction involves three pi bonds, two from the diene and one from the dienophile in a concerted reaction to give a six-membered ring.
Since this reaction involves four pi electrons in the diene and two pi electrons from the dienophile, it is sometimes referred to as a 4+2 cycloaddition.
The presence of electron donating groups on the diene and the electron withdrawing groups on the dienophile favors normal Diels Alder reactions. The reaction involves the formation of new σ bonds which are energetically more stable than π bonds.
Anthracene can react with water, breaking the center ring. Maleic anhydride can react with water, opening its ring. The reactants get seperated into two layers by water and thereby stops the reaction.
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How many valence electrons in this electron configuration 1S2 2S2 2P6 3S2
Answer:
Explanation:
Electron Configurations
A B
Fluorine 1s2 2s2 2p5
Neon 1s2 2s2 2p6
Sodium 1s2 2s2 2p6 3s1
Magnesium 1s2 2s2 2p6 3s2
water has a density of 1.0 g/mL. a plastic cup floats when it is placed into a container of water. what can you conclude about the density of the plastic cup? (look at the picture)
How would you change liquid water into ice? Be sure to explain what is happening to the energy (the heat)
Answer:
By putting the liquid water in the fridge
Explanation:
When it is solid the heat will melt to liquid water and if you put it inside a boiling kettle if it boil finished it will bring out gas,if you open it the cover of the kettle you see water if you put it in the fridge and it will be solid again.
how much energy is released when 23 g of steam at 100 Celsius is condensed into liquid water?
H = mc∆T
H = 23g * 4.2J/g°C *(100°C - 0°C)
H = 9660 J
H = 9.66 KJ.
The energy released is 9.66 KJ.
a space probe identifies a new element in a sample collected from an asteroid. successive ionization energies, in attojoules per atom, for the new element are given in the table. i1 i2 i3 i4 i5 i6 i7 0.507 1.017 4.108 5.074 6.147 7.903 8.294 to what family of the periodic table does this new element probably belong?
The element belongs to group 17 of the periodic table.
In the periodic table, elements are arranged in groups depending on their properties. Usually, elements whose atoms have the same number of valence electrons are placed in the same group.
All the elements in group 17 have seven electrons on their outermost shell. Since an ionization energies of the electrons on the valence shell of an atom are always close together, the ionization energies of the seven electrons as shown indicate that they must be on the same shell.
Hence, the new element must be a member of group 17 of the periodic table.
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PLZZ HELP
Which of the following Is acompound?
Ne
N₂
Naci
02
Answer:
[tex]N2[/tex]
Explanation:
Because
Molecular nitrogen (N2) is a very common chemical compound in which two nitrogen atoms are tightly bound together.
If yuo put hand sanitizer in a bottle, light a match, drop it in the bottle, what will happen?
Answer: As hand sanitizer dries, it evaporates into gas, which can also catch fire. That’s why the experts recommend that people avoid lighters, matches and fires after using hand sanitizer.
Explanation:
Explanation:
A medida que se seca el desinfectante de manos, se evapora en gas, que también puede incendiarse. Es por eso que los expertos recomiendan que las personas eviten los encendedores, fósforos y fuegos después de usar desinfectante para manos.
Based on location in the periodic table, which element has chemical properties that are most similar to iodine
xenon (Xe)
calcium (Ca)
Selenium (Se)
fluorine (F)
Answer:fluorine
Explanation:
Based on location in the periodic table, fluorine (F) has chemical properties that are most similar to iodine.
In the periodic table, elements are classified in groups and periods. The elements in the same group are chemically similar and they have the same number of valence electrons. Elements in the same period have the same highest energy level.
Hence, when looking for an element that is most chemically similar to iodine, we have to consider the element that is in the same group with iodine.
Both fluorine are iodine are both in group 17 hence, fluorine is most chemically similar to iodine.
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Answer:
I think the answer is yellow or White
Explanation:
because it is the visible light that I know
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Do you have more human cells or
bacteria cells in your body?
at the end of the isomerization reaction, what chemical is used to quench the residual bromine?
Answer:
They are constitutional isomers and diastereomers.
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Answer:
nosé
Explanation:
wadsdfc evdcaedc<dc
Answer:
second one
Explanation:
what is the name of the ionic compound made of beryllium and chlorine?
Answer:
beryllium chloride
Explanation:
Therefore a compound made from beryllium and chlorine will be named beryllium chloride.