CHEMISTRY HIGH SCHOOL

The process in which a substance changes from a gaseous state to the liquid state is

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Answer 1
Answer:

The process in which a substance changes from a gaseous state to a liquid state is condensation

hope this helps!!!
Answer 2
Answer:

Answer:

Condensation is the change of state from a gas to a liquid

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In plants, movement of CO2 and O2 happens through:

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Stomata
Stomata are the pores present on the leaves of the plant

A person pushes horizontally with a force of 220. N on a 56.0 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.21. (a) What is the magnitude of the frictional force? (b) What is the magnitude of the crate's acceleration?

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Explanation:

(a)   As it is given that there is no vertical displacement. Hence, the forces on y-axis are equal and opposite.

Also, it is known that F = mg

So,            F = 56 kg * 9.8 m/s^(2)

                    = 548.8 N

Also,   F_(f) = \mu N

where,   \mu = coefficient of kinetic friction

                 N = force calculated

Putting the values into the formula as follows.

            F_(f) = \mu N

                       = 0.21 * 548.8

                      = 115.25 N

Hence, the magnitude of the frictional force is 115.25 N.

(b)   Now, let us assume that the acceleration is towards the positive x-direction.

                F - F_(f) = ma

        548.8 N - 115.25 = 56 * a

                  a = 7.74 m/s^(2)

Therefore, the magnitude of the crate's acceleration is 7.74 m/s^(2).

What stays the same when’s solution is diluted by adding more solvent

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The amount of solute does not change.((:

How many grams of iron metal do you expect to be produced when 265 grams of an 84.5 percent by mass iron (II) nitrate solution react with excess aluminum metal? Show all of the work needed to solve this problem. 2Al (s) + 3Fe(NO3)2 (aq) yields 3Fe (s) + 2Al(NO3)3 (aq)

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The balanced reaction is:

2Al (s) + 3Fe(NO3)2 (aq) = 3Fe (s) + 2Al(NO3)3 (aq)

We are given the amount of iron (II) nitrate solution with its purity. This will be the starting point of our calculation.

265 (.845) gram iron (II) nitrate (1 mol Fe(NO3)2 / 179.85 g Fe(NO3)2) ( 3 mol Fe / 3 mol Fe(NO3)2) (55.85 g Fe / 1 mol Fe) = 69.54 g Fe

The density of gold is 19.32. Give two reasons why this statement is incomplete

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The density of gold is 19.32. The two reasons due to which the statement is incomplete are there is no unit and it doesn't present the temperature and pressure.

What is density?

Density has been defined as the mass per unit volume it means that mass is present in one meter cube.

S.I unit of density is kg/meter^3.

Mathematically

Density = Mass/Volume.

Momentum has been the  product of mass and velocity. It is a vector quantity and it's S.I unit kg x meter/sec. There will be no effect of the outside environment on the potential energy that has to be present inside the body. The kinetic energy decrease or increase with change in the velocity.

Weight has been defined as the total heaviness of the body or object. It has been also known as the portion of anything weighs. In physics weight has been known as the vertical force which has  experienced by mass which is due to the gravitation. The weight has been equal to the mass of the body and the product of mass and acceleration of free fall is known as weight.

Therefore, The density of gold is 19.32. The two reasons due to which the statement is incomplete are there is no unit and it doesn't present the temperature and pressure.

Learnmore about density on:

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a: there is no unit. b: it doesn't present the temperature and pressure

How many kilojoules are equivalent to 10 joules?

Answers

1 Kj ------------- 1000 J
?? --------------- 10 J

10 x 1 / 1000 => 0.01 Kj
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