This image represents a(n)

a) atom of nitrogen
b)mixture of nitrogen atoms
c)compound containing nitrogen
d)molecule of diatomic nitrogen

Answer:

Viewed simply, electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy. ... In a more realistic model, electrons move in atomic orbitals, or subshells.

Explanation:

Viewed simply, electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy. ... In a more realistic model, electrons move in atomic orbitals, or subshells.

Answer:

[tex]3.7837 \times {10}^{ - 19} j[/tex]

Explanation:

[tex]e = \frac{hc}{ \lambda} \\ where \: h \: = plancks \: constant \\ and \: c = speed \: of \: light[/tex]

Planck constant value: h = [tex]6.62606957 \times {10}^{ - 34} j \: s\: [/tex]

speed of light constant: c = [tex]299,792,458 \frac{m}{ s} [/tex]

[tex]hc = 6.62606957 \times {10}^{ - 34} j \: s\: \: \times \\ 299792458 = 1.98645 \times {10}^{ - 25} j \: m[/tex]

Divide the wavelength in nanometers by 10^9 to calculate the value in meters.

[tex] \frac{525}{ {10}^{9} } = 5.25 \times {10}^{ - 7} m[/tex]

[tex]e = \frac{hc}{ \lambda} \\ = \frac{1.98645 \times {10}^{ - 25} j \: m}{ 5.25 \times {10}^{ - 7} m} [/tex]

[tex] = 3.7837 \times {10}^{ - 19} j[/tex]

Answer:

Lava is hot liquid rock. When lava flows over solid ground, the solid ground beneath it increases in temperature. What happens to the molecules in the solid ground when the temperature is increasing? The energy of the molecules in the ground decreases.

The amount of heat absorbed by the water is 1606.6 J (383.99 Calories )

Initial temperature (T₁) = 21.5 °C

Final temperature (T₂) = 28.1 °C

ΔT = T₂ – T₁

ΔT = 28.1 – 21.5

Mass of water (M) = 58.18 g

Change in temperature (ΔT) = 6.6 °C

Specific heat capacity of water (C) = 4.184 J/gºC

Q = MCΔT

Q = 58.18 × 4.184 × 6.6

Divide by 4.184 to express in Calories

Q = 1606.6 / 4.184

Therefore, the amount of heat absorbed by the water is 1606.6 J (383.99 Calories )

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Answer:

3−

Thus, a nitrogen atom will form an anion with three more electrons than protons and a charge of 3−.

Explanation:

Answer:

[tex]tin \: sulphar gold \: are \: not \: mixture \: \\ they \: are \: elements \: \: others \: are \: mixture \\ thank \: you[/tex]

Tin, sulfur, and gold are not a mixture because they are pure elements.

Pure substances can be described as elements that cannot be broken down into simple substances because they have only one type of atom in the whole composition.

A pure substance can be described as composed of two or more elements that are chemically combined and have a set composition such kind of pure substance is known as a compound.

A mixture can be described as made up of two or more different substances which are just physically combined but not chemically. A mixture can be separated into its initial components.

The composition of a heterogeneous mixture is non-uniform throughout the mixture while the composition of a homogeneous mixture is always the same in the entire mixture.

Therefore, tin, sulfur, and gold are pure elements, not a mixture.

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b.c10²

i dont know if it is right sorry if isn't

Answer:

13. A. Kinetic energy increases

14. A. Kinetic energy

15. B. is not transferable

Sorry if I got any wrong, they should be all correct. I tryed.

Answer:

mcsdfltghjktym,mxsdjqeury46yuiejlm,x.dfkrut9ejv7uahjfm,clo95yijmfgnhgkm,vfwosafijj

Explanation:

ccguhfộcdwlklil,,c,c.cclkidjiiiiiiiiiinc ciiiiiiiiiiiiiiiiiiiiiiiiii icbccfrewwwfvbbgjjjdjjmehyuejhuys,kuyjmwjhuj,mhyisooo gkshjyhcfmkijxlk0 hô tôys nhé cusjjhdfkjarfffssssssssssssssssaassssssssssgbssssssssssssnsssssssssssssssa

Answer:

When compared to the standard hydrogen electrode, zinc has a reduction potential of -0.762 volts and copper a reduction potential of + 0.342 volts. What is the reduction potential when zinc and copper are connected to one another? Standard Santand Inc ар -40 INC IM IM Z IM ಅವಳ ದdಂಗpa volts 0.420- volts 0.420- volts 0.420- volts 1.104+

Explanation:

Btw brainliest me plss

Answer: Its B,C,D, and E

Explanation:

The correct statements about the compound calcium chloride are Chlorine becomes a negative ion, The chemical formula is CaCl₂, Calcium transfers electrons to the chlorine atoms and The subscript 2 is used to balance the charge.

Hence, Option B, C, D and E are correct.

Calcium chloride is a crystalline white substance which is soluble in water. It is the chloride salt of calcium. The chemical formula of calcium chloride is CaCl₂. In calcium chloride, Calcium atom has two valence electrons.

Now lets check all statements one by one

Option (A): Calcium chloride is a ionic compound. Here calcium transfers its valence electrons to both chlorine atoms.

So, statement A is incorrect.

Option (B): In calcium chloride each chlorine atom gains 1 electron and we get a negatively charged ion Cl⁻.  

So, statement B is correct.

Option (C): In Calcium chloride the valency of calcium is +2 and the valency of chlorine is -1.  So the chemical formula is CaCl₂.

So, statement C is correct.

Option (D): In calcium chloride calcium transfer its two valence electrons to both the chlorine atoms.

So, statement D is correct.

Option (E): In calcium chloride the subscript 2 is used to balance the charge. The subscript show the number of atoms in compound.  

So, statement E is correct.

Thus, from the above conclusions we can say that The correct statements about the compound calcium chloride are Chlorine becomes a negative ion, The chemical formula is CaCl₂, Calcium transfers electrons to the chlorine atoms and The subscript 2 is used to balance the charge.

Hence, Option B, C, D and E are correct.

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Answer:

Volatile

Explanation:

Nonmetal are usually volatile, which means it evaporate easily.

Answer:

Because its the basic building block of life

Explanation:

Carbon is essential to life since it is present in nearly all molecules in the body. like, sugars, DNA, proteins, lipids, and so on. Except for water though.

0.75x2.5x328/(0.325x1.5)

=1261.5K

Answer:

oxygen-17

Explanation:

sum of the mass numbers and sum of the atomic numbers should be same in the both sides respectively

Answer:

neutron

Explanation:

neutron and proton has approximately the same mass .proton is positively charged but neutron has no charge

Answer: Which statement is always true when nuclear fusion occurs: The combined number of protons and neutrons remains constant.

21H+ 21H→ 42H+energy

Which statement best describes the mass numbers of the atoms in the reaction? There are two atoms with mass numbers of 2.

Which fact is true during a fission chain reaction? The number of freely-moving neutrons increases over time.

Explanation:

The statement which is always true when nuclear fusion occurs is "the combined number of protons and neutrons remains constant".

Nuclear fusion is a type of reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

Fission chain reaction is a process in which neutrons released in fission produce an additional fission in at least one further nucleus. This nucleus in turn produces neutrons, and the process repeats.

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Answer:

5 cm and 50 mm

Explanation:

1 cm = 10 mm

So 5cm = 50 mm

Answer:

Ca(OH)2 chemical of lime water.

it is alkali in nature if it is only lime then it is an example of critic acid and it is know as. acid

lime wate is alikali

limes is acid

Explanation:

Answer:

Alkali

Explanation:

Limewater is the calcium hydroxide. It is Alkali

Answer:

Beryllium has 2 dots and Carbon has 4

Answer:

They both classify as halogens they are both in the fluorine family and their both in group 17 on the periodic table

Explanation:

That's all I could come up with

Answer:

Answer:

Pluto I think it's the ans

Answer:

When the sun's rays shine down on a plant, the chlorophyll capture the energy from the sun and use it during photosynthesis to make sugars. Sugar is the energy source for plants, that is why sunlight and photosynthesis is so important

The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

Answer:

Answer:

Stay in the shade, especially during midday hours.

Wear clothes that cover your arms and legs.

Consider options to protect your children.

Wear a wide brim hat to shade your face, head, ears, and neck.

Wear wraparound sunglasses that block both UVA and UVB rays.

Explanation:

CAN YOU GIVE ME BRAINLIEST

Answer:

Paper burning

Explanation: