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3 years ago

How would you describe the rock cycle in your own words?

1 answer:

3 0

A continuous process by which rocks are created, changed from one form to another, destroyed, and then formed again into different types of rocks. But what really know is that it's a rocky situation.

You might be interested in

What is the melting point of a solution in which 2.5 grams of sodium chloride is added to 230 mL of water?

Lemur [1.5K]

To get the melting point of a solution so, we will use this formula:

ΔT = - mKf

when:

m is molality of the solution

Kf is cryoscopic constant of water = 1.86 C/m

and ΔT is the change in melting point (T2 - 0 °C)

so, now we need to calculate the molality to substitute:

when the molality = moles NaCl / Kg of water

and when moles NaCl = mass / molar mass

= 2.5 g / 58 g/mol

= 0.043 mol
∴ Kg water = volume *density /1000

= 230 mL * 1 g/mL / 1000

= 0.23 Kg
∴ molality = 0.043 / 0.23 =0.187 M

by substitution:

T2-0°C = - 0.187 * 1.86

∴T2 = - 0.348 °C

5 0

3 years ago

What is the maximum amount of electrons that can be in the third energy level of an atom? (question continued in comments)

Alex787 [66]

Answer:

18 electrons

Explanation:

If you search on Google you get the same answer, so the question gives you your answer.

6 0

4 years ago

The partial pressure of N2 in a mixture of gases, where the total pressure is 1.50 atm, is 300. torr. What is the mole fraction

makvit [3.9K]

Answer:

The mole fraction of N₂ is 0.26.

Explanation:

The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:

PT = PA + PB

This relationship is due to the assumption that there are no attractive forces between the gases.

Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture. The mole fraction is a dimensionless quantity that expresses the ratio of the number of moles of a component to the number of moles of all the components present.

So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:

PA = XA * PT

In this case:

PA= PN₂= 300 torr
XA=XN₂= ?
PT= 1.50 atm= 1140 torr (being 1 atm= 760 torr)

Replacing:

300 torr= XN₂*1140 torr

Solving:

$X_{N_{2} } =\frac{300 torr}{1140 torr}$

XN₂= 0.26

The mole fraction of N₂ is 0.26.

6 0

3 years ago

Which is an example of VELOCITY?

sveticcg [70]

a person not moving at all (if right put brainiest) plz

3 0

3 years ago

The “rungs” that form the middle of the DNA molecule, and whose order make up the “code”, are called ___________. Question 1 opt

DaniilM [7]

The answer to that question is c

3 0

3 years ago

Read 2 more answers