Someone help me please! I will mark brainliest if it’s right!

Answer:

(1) extraterrestrial impacts, (2) gravitational contraction of the Earth's interior, and (3) the radioactive decay of unstable isotopes.

Explanation:

hope this helps

(1) Extraterrestrial impacts, (2) gravitational contraction of the Earth's interior, and (3) the radioactive decay of unstable isotopes are the sources of heat that are not major contributors to Earth's present-day internal heat.

Heat is the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object.

(1) Extraterrestrial impacts, (2) gravitational contraction of the Earth's interior, and (3) the radioactive decay of unstable isotopes are the sources of heat that are not major contributors to Earth's present-day internal heat.

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Answer:

The bottommost layer in core sample 1 and the topmost layer in core sample 2.

Explanation:

Correct me if im wrong :)

The concentration of S2−in equilibrium with MnS(s) (sp=4. 6×10−14) and 0.083M Mn2+ is mathematically given as

[s^2-]=61.333*10^{-14}M

Generally, the equation for the solubility constant  is mathematically given as

Ksp=[Mn^2+][s^2-]

Therefore

4.6*10^{-14}=0.075*[s^2-]

[s^2-]=4500/0.075*10{-14}

[s^2-]=61.333*10^{-14}M

In conclusion, The concentration of S2−

[s^2-]=61.333*10^{-14}M

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Answer:

the position of hydrogen is controversial in periodic table because hydrogen is the only element with out neutron. it belongs to 1 st group but it is not placed there .Feb 8, 2018

Explanation:

pls give brainliest and heart much appreciated

Answer:

all u have to do is multiply

Answer: gravity affect the amount of both kinetic and potential energy

Explanation:

Answer: Carbon,Hydrogen, Chlorine

Explanation:

C=Carbon

H=Hydrogen

Cl=Chlorine

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Answer:

divide the volume value by 1000

So 3828/1000=3.828

Answer:

Photolysis and hydrolysis. These are two methods that can be used to break down a compound into simpler substances and smaller units.

Explanation:

Answer:

0.0499 moles

Explanation:

56.08g => 1 mol

2.80g => y mol

Y = 2.80/56.08 = 0.0499 moles

A sample of calcium oxide (CaO) has a mass of 2.80 g. the molar mass of CaO is 56.08 g/mol. No. of moles of CaO this sample contain are 0.499.

Avogadro's number is the number of units in one mole of any substance and equals to 6.02214076 × 10²³. The units can be electrons, atoms, ions, or molecules.

No. of moles is defined as a particular no. of particles that we can calculate with the help of Avogadro’s number.

Mass of a particular product is also find out by stoichiometry of a reaction as per the no. of mole given in the reaction.

No. of moles = Mass of compound ÷ Molar mass of compound

No. of moles = 2.80 ÷ 56.08 = 0.0499

Therefore, A sample of calcium oxide (CaO) has a mass of 2.80 g. the molar mass of CaO is 56.08 g/mol. No. of moles of CaO this sample contain are 0.499.

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Answer:

3845

Explanation:

Answer:

it is 3845 grams

Explanation:

Answer:

The reaction rate would decrease

Explanation:

What would happen to the rate of the forward reaction if the concentration of nitrogen were decreased? The reaction rate would decrease . What will happen to the rates of the forward and reverse reactions when a catalyst is added? Both forward and reverse rates increase.

Answer:

It had changed by .001 liters because of the way that cold air can't evaporate more than .5 liters of air

Explanation:

Answer:

Answer in picture

Explanation:

Answer:

Ammonia (NH3) is composed of Nitrogen and 3 Hydrogens

Explanation:

Answer:

When it is cold, it's hard for the molecules and whatever microscopic organisms live there to move around.

When it is hot, the molecules will move quicker due to a chemical reaction with the atoms and other forms of energy increasing with the heat energy. This reaction happens because 2 forms of energy meet.

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Answer:

False

Explanation:

It occurs when two waves meet while traveling along the same medium.

Answer:

I'm pretty sure it all of the above

sorry if I'm wrong

Explanation:

Answer:

5.6 x 10²⁴ molecules H₂O

Explanation:

9.3 moles * (6.02214076 x 10²³) = 5.6 x 10²⁴

The Avogadro constant = 6.02214076 x 10²³

This constant is the number of particles (such as atoms, ions, or molecules) in one mole of something.

If a mixture is prepared by mixing 29.27 mL of the blue dye solution with 35.00 mL of the red dye solution and 14.73 mL of the yellow dye solution, the molar concentration of the blue dye in the mixture is

MB'=0.1189M

Generally, the equation for the moles  is mathematically given as

Moles=Molarity *volume

Therefore

For Blue dye

MB=0.3523*25.27*1/1000ml

MB=8.90*10^{-3}

For red dye

MR=0.1017*35.27*1/1000ml

MR=3.55*10^{-3}

For yellow dye

MY=0.3523*14.73*1/1000ml

MY=2.27*10^{-3}

Where

Total volume is

T=25.27+35.ml+14.73

T=75ml

In conclusion, The molar conc of blue dye is

[tex]MB'=\frac{8.90*10^{-3}*1000}{75}[/tex]

MB'=0.1189M

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Answer:

refigeration,coolant for nuclear reactants

Explanation:

used for cooling properties since it's boiling point being close to absolute zero.

Answer:

Electrons

Explanation:

"Static charges" occur when the number of positive charge and negative charge are not equal. This can be applied to neutral objects by friction, induction and conduction with the help of "electrons."

In friction, the electrons are being transferred between the objects being rubbed together.

In conduction, the electrons are also being transferred from one object to another but not through rubbing; instead through direct contact.

In induction, the electrons are able to react immediately without the need for direct contact.

So, electrons are being utilized in these processes in order to create charge.

Answer:

Nuclear fusion, Conduction, Conduction, Radiation.

The Sun produces energy deep inside its core by fusing hydrogen atoms together to form heavier ones through nuclear fusion. Conduction and convection are used to move heat from the core to the surface.

Radiation is the electromagnetic transmission of heat energy through space. The majority of the electromagnetic radiation that the sun emits and that reaches the Earth is invisible. Only a tiny fraction is visible light. Light consists of waves of various frequencies.

When two objects with different surface temperatures come in contact with one another, conduction happens. Up until they reach the same temperature, heat moves from the warmer to the cooler object. Heat moves through a substance by conduction when molecules collide.

Thus the correct order is Nuclear fusion, Conduction, Conduction, and Radiation.

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Answer:Part 1. A chemist reacted 15. 0 liters of F2 gas with NaCl in the laboratory to form Cl2 and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1. 50 atm.

Explanation:

answer f2 280

Answer:

A. The moon

Explanation:

This is because the sun gives the moon the light the moon doesn't make it.

Answer:

Rutherford concluded from his metal foil experiments that most of an atom is empty space with a tiny, dense, positively charged nucleus at the center that contains most of the mass of the atom. He also concluded that the electrons orbit the nucleus like the planets orbit the sun

Explanation:

Answer:

The answer of this question is density

Answer:

electrons

Explanation:

A redox reaction is one in which oxidation and reduction takes place. in the sense of

oxidation being the loss of electrons and reduction the gain of electrons.

Answer:

A 1.33

Explanation:

Refractive index = (speed of light in vacuum)/(speed of light in another medium)

Refractive index = (300000000)/(225000000)

Refractive index = 1.33