What is this please help

Answer:

molecular collisions that have very specific orientations

Explanation:

Based on the collision theory, a high frequency of effective collision is dependent on the molecular collisions that have very specific orientations.

Answer:

C. molecular collisions that have very specific orientations

Explanation:

Answer:

Nuclear energy

I'm not sure ok.. Better ask some adult for making sure.

Answer:

A line spectrum is produced when the electron moves from one energy level to a lower energy level.

Answer:

Explanation:

...from one energy level to a lower energy level

Answer:

The pressure inside the cylinder is [tex]8.327\times 10^{-3}[/tex] atmospheres.

The value for R for this problem is 0.082 atmosphere-liters per mol-Kelvin.

Explanation:

Let suppose that helium gas inside the cylinder behaves as an ideal gas, the equation of state for the ideal gas is:

[tex]P\cdot V = n\cdot R_{u}\cdot T[/tex] (1)

Where:

[tex]P[/tex] - Pressure, measured in atmospheres.

[tex]V[/tex] - Volume, measured in liters.

[tex]n[/tex] - Molar quantity, measured in moles.

[tex]T[/tex] - Temperature, measured in Kelvin.

[tex]R_{u}[/tex] - Ideal gas, measured in atmosphere-liters per mole-Kelvin.

If we know that [tex]V = 60\,L[/tex], [tex]n = 0.020\,mol[/tex], [tex]T = 304.65\,K[/tex] and [tex]R_{u} = 0.082\,\frac{atm\cdot L}{mol\cdot K}[/tex], then the pressured inside the cylinder is:

[tex]P = \frac{n\cdot R_{u}\cdot T}{V}[/tex]

[tex]P = \frac{(0.020\,mol)\cdot \left(0.082\,\frac{atm\cdot L}{mol\cdot K}\right)\cdot (304.65\,K) }{60\,L}[/tex]

[tex]P = 8.327\times 10^{-3}\,atm[/tex]

The pressure inside the cylinder is [tex]8.327\times 10^{-3}[/tex] atmospheres.

The value for R for this problem is 0.082 atmosphere-liters per mol-Kelvin.

Answer:

its A

Explanation:

Answer:

7.85 g/cm³

Explanation:

Density is Mass/Volume

The mass is 212 grams

The volume is 27 cm³ (3 x 3 x 3 = 27)

212/27 = 7.851851852

We can estimate this to 7.85 g/cm³

Density is simply defined as the mass of a substance per unit volume of substance. It is expressed mathematically as:

[tex]Density = \frac{Mass }{Volume }[/tex]

To solve the question given above, we'll begin by calculating the volume of the iron. This can be obtained as follow:

Dimension = 3.0 cm by 3.0 cm by 3.0 cm

Volume = 3 × 3 × 3

Thus, the volume of the iron is 27 cm³

Finally, we shall determine the density of the iron as follow:

Mass of iron = 212 g

Volume of iron = 27 cm³

[tex]Density = \frac{Mass}{Volume } \\\\Density = \frac{212}{27}[/tex]

Therefore, the density of the iron is 7.85 g/cm³

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Answer:

Chemical Equation: (NH4)2S(aq) + 2KOH(aq) -> K2S(aq) + 2NH4OH(s)

Complete Ionic Equation: 2NH4^+(aq) + S^2-(aq) + 2K^+(aq) 2OH^-(aq) -> 2K^+(aq) + S^2- (aq) + 2NH4OH(s) 2NH4^+(aq) + OH^-(aq) -> NH4OH(s)

Explanation:

A "cell" might be a better name for the torch battery. A "battery" is a collection of connected cells. Another example of an electric cell is a lemon with two strips of different metals (for instance, zinc & copper) inserted into it. The correct option is B.

A primary cell in a dry-cell battery is one that cannot be recycled. Each dry-cell battery has a cathode and an anode for operation. Remote controls, clocks, and calculators are a few examples of modern-day items that employ dry-cell batteries.

Alkaline and lithium batteries are the two most typical types found in flashlights. A "dry" cell used in a torch has a finite lifespan.

Thus the correct option is B.

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Answer:

Break apart

Explanation:

Decompose: to break down or cause to break down into component elements or simpler constituents.

Answer:

The noble gases(neon, helium, argon)

Explanation:

In the ground state, noble gas atom has a completely filled valence electron shell. Space makes up the majority of an atom.

The smallest unit of matter that may be split without producing electrically charged particles is the atom. It is also the smallest piece of substance with chemical element-like characteristics. Electric forces, which link electrons towards the nucleus of atoms, cause them to be drawn to any positive charge.

Space makes up the majority of an atom. The remainder is made up of a cloud of negatively charged electrons around a positively charged nucleus made up of protons and neutrons. Compared to electrons, that are the smallest charged particles in nature, the nucleus is tiny and dense. In the ground state, noble gas atom has a completely filled valence electron shell.

Therefore, in the ground state, noble gas atom has a completely filled valence electron shell.

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The mass number of an atom is equal to the number of protons plus the number of neutrons that it contains. In other words, the number of neutrons in any atom is its mass number minus its atomic number.

hope this helps, if not, your free to give me 1 star

Answer:

Ooo points, You get teal, turquoise, and cyan :)

Answer:

Pure copper(II) sulfate is white. It is also known as anhydrous copper(II) sulfate because it has no water in it.

When water is present in a sample of copper(II) sulfate it turns blue. It is still a dry solid, because the individual water molecules are trapped within the ionic lattice surrounding the copper(II) ions. Solutions of copper(II) sulfate are also blue.

This colour change can be used to detect the presence of water (or water vapour).

Answer:

Bromine

Explanation:

Br2 is an oxidizing agent, Na is a reducing agent.

Answer:

Great Rapids White Water Rafting Company rents rafts for $125 per hour. Explain why the point, (0,0) and (1, 125) are on the graph of the relationship and what these points mean in the context of the problem. * 100 points

Explanation:

Answer:

1. B

2. C

Explanation: The law that the properties of the elements are periodic functions of their atomic numbers. And the second one is, most of the air we breathe is made of oxygen.

Answer:

I did this already

................

Answer: % yield

=

actual yield

theoretical yield

⋅

100

%

So, let's say you want to do an experiment in the lab. You want to measure how much water is produced when 12.0 g of glucose (

C

6

H

12

O

6

) is burned with enough oxygen.

C

6

H

12

O

6

+

6

O

2

→

6

C

O

2

+

6

H

2

O

Since you have a

1

:

6

mole ratio between glucose and water, you can determine how much water you would get by

12.0

g glucose

⋅

1 mole glucose

180.0 g

⋅

6 moles of water

1 mole glucose

⋅

18.0 g

1 mole water

=

7.20

g

This represents your theoretical yield. If the percent yield is 100%, the actual yield will be equal to the theoretical yield. However, after you do the experiment you discover that only 6.50 g of water were produced.

Since less than what was calculated was actually produced, it means that the reaction's percent yield must be smaller than 100%. This is confirmed by

% yield

=

6.50 g

7.20 g

⋅

100

%

=

90.3

%

You can backtrack from here and find out how much glucose reacted

65.0 g of water

⋅

1 mole

18.0 g

⋅

1 mole glucose

6 moles water

⋅

180.0 g

1 mole glucose

=

10.8

g

Explanation:

Answer:no answer,

Explanation: but if the other dude see this can you re word Wht u said it’s hard to make sense of it

Answer:

hydrogen and oxygen to form water

Answer:

True

Explanation:

Answer:

A tropism is a turning toward or away from a stimulus in the environment. Growing toward gravity is called geotropism. Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin.

Explanation:

Answer:

A is the answer to your question

They usually have crystals since they are formed from lava

Answer:

A

Explanation:

Hopefully this helps.

Answer:

c

Explanation:

Answer:

one atom of iron and three atoms of chlorine.

Explanation:

I just took the test and made a 100 and im really good that this because it so easy.

The compound FeCl₃ is made of one atom of iron and three atoms of chlorine.

Let's consider the chemical formula for iron (III) chloride: FeCl₃.

Let's consider which of the following is true for iron (III) chloride.

The compound FeCl₃ is made of:

The compound FeCl₃ is made of one atom of iron and three atoms of chlorine.

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