Only awnser #5#6#7#8 please 20 points! And i will mark brainliest.

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Answer:

C

Explanation:

Answer:

D)

Explanation:

On land, volcanoes form when one tectonic plate moves under another. Usually a thin, heavy oceanic plate subducts, or moves under, a thicker continental plate. When this happens, the ocean plate sinks into the mantle.

Answer:

B) Crust

Explanation:

It's the farthest layer from the core listed.

Answer:

B) Crust

Explanation: it is the lowest from the center of the earth.

Answer:

46.9 atm

Explanation:

Applying Van der waals equation

P = [nRT/(V-nb)]- (an²/V²)............... Equation 1

Where P = pressure, T = temperature, n = number of moles, V = volume, R = Universal constant, a and b = gas constant

Given: n = 20 moles, R = 0.08205 L.atm/mol.K, T = 273 K, V = 10.0 L, a = 0.0341 atm.L²/mol², b = 0.0237L/mol

Substitute these values into equation 1

P = [(20×0.08205×273)/(10-20×0.0237)]-(0.0341×20²/10²)

P = (447.993/9.526)-0.1364

P = 47.028-0.1364

P = 46.9 atm

Answer:

0.326 mol. is the answer.

Explanation:

No. of moles = Volume (L) / Volume at STP

N = 7.3 / 22.4

N = 0.326 moles

Explanation:

[tex]pressure = 760mm \: of \: mercury \\ = 101325 \: pascals \\ from \: PV = nRT \\ 101325 \times 1 = n \times 8.314 \times 273 \\ n = 44.6 \: moles[/tex]

Answer:

740

Explanation:

The nitrogen is combined with it.

Answer:

0.46 J/g degrees C, Iron

Explanation:

16.1 J = 5 g x c x 7 degrees C

c = 16.1 / 5 x 7 = 0.46

Answer: 0.46 J/g degrees C, Iron

Answer:

Yes it is hard. For some of us. I already gave up, but now hes coming back. Id say sometimes its useless to get his attention if he never even pays attention to you anyways. It sucks because its so hard to get then to notice you for once.

Explanation:

Hiiii- Are you asking what the element of Hu is???

If so- it's Hundium.

...

If this was just a random keyboard spam of a question, then Huuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu to you too

Answer:

2. chlorine

3. Copper??

4. Isotope

5. sodium, magnesium, aluminum, silicon, phosphorus, sulfur, or argon

6. Oganesson

7. Hydrogen

Hope these are right!

Answer:

Molarity of our solution= 0.46=0.5

Explanation:

When diluting a solution we can use the formula: 1 1 = 2 2

= M= Molarity of the solution

=V=volumes

On the left side, we'll put what we know/already have and on the right side of the formula we'll put down what we want to dilute it to.

Let's plug in what we already know.

(0.700M)(2L) = (M2)(3L)

Solve for M2 by dividing both sides by 3 so M2 will be by itself.

(0.700M)(2L)/(3L) = M2

M2= 0.46, we can round it up to 0.5

Answer:

radioactive decay

Explanation:

By increasing the frequency which changes the wavelength,  frequency changes across the electromagnetic spectrum, from radio waves to gamma rays.

The electromagnetic spectrum is a wide range of frequencies that vary depending upon the wavelength of the spectrum and somehow the energy of photons also affects the frequencies and wavelengths.

There are three types of electromagnetic spectrum hydrogen spectrum emission spectrum due to the emission of light and absorption spectrum due to absorption of light.

Therefore, frequency changes across the electromagnetic spectrum, from radio waves to gamma rays are By increasing the frequency which changes the wavelength.

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Answer:

on the PH scale anything with a ph of 1-7 is acidic, anything 7-14 is basic, in this case the solution mentioned in the question is basic.

Answer:

Well, technically its considered neutral but since it doesn't exactly fall into a certain category, but its not exactly a basic either, so I would say that it would be acidic.

Explanation:

Answer:

1) it takes 13 second

2) 2100 miles

3) 40 miles / hours

4) 730 meters

Answer:

ph=5.2 solution is acidic

Answer:

Rabbbits are scared so if there is an increase in the snake population they would try and hide and run from it bur hawks also prey on rabbits but not every hawk so Im going with bthe snake answer .

Explanation:

Answer:

9.598 × 10⁻¹¹ m

0.09598 nm

9.598 × 10⁻⁹ cm

Explanation:

Step 1: Given data

Distance between oxygen and hydrogen in water (d): 95.98 pm

Step 2: Convert "d" to meters

We will use the conversion factor 1 m = 10¹² pm.

95.98 pm × 1 m/10¹² pm = 9.598 × 10⁻¹¹ m

Step 3: Convert "d" to nanometers

We will use the conversion factor 1 m = 10⁹ nm.

9.598 × 10⁻¹¹ m × 10⁹ nm/1 m = 0.09598 nm

Step 4: Convert "d" to centimeters

We will use the conversion factor 1 m = 100 cm.

9.598 × 10⁻¹¹ m × 100 cm/1 m = 9.598 × 10⁻⁹ cm

Explanation:

A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.

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Answer:

Generally, all atoms of elements contain three sub-atomic particles- Protons(Positively-charged), Neutrons(Neutral) and Electrons(Negatively-charged).

The Magnitude of the Positive Charge possessed by the Protons and the Magnitude of the Negative Charge possessed by the Electrons cancel each other, which make the atom electrically neutral.

Hence,

Without any electrons, the magnitude of the positive and negative charges wouldn't balance, and the atom would be unstable and disintegrate almost immediately. Hence, all stable atoms should have electrons revolving around them, where the number of protons and electrons are the same, under normal conditions.

To Conclude,

Every atom of an element will have electrons arranged in different shells, or matter couldn't exist without electrons.

Answer:

2.3g

Explanation: my mom is a teacher

CH₄ + 2O₂ → CO₂ + 2H₂O For this reaction the mass of methane gas (CH4) is required in order to follow the Law of Conservation of Mass is 2.3 gram. Therefore, option D is correct.

The Law of Conservation of Mass states that the total mass of the reactant is exactly equal to the total mass of the product.

It is also state that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal gets carbon dioxide when it is burned.

This law is important in understanding and production of various chemical reactions. If researchers experience the identities alongside the quantities of the reactants for any particular reaction.

According to the Law of Conservation of Mass, In given combustion reaction to obey this law the mass of reactant is 2.3 grams.

Thus, option D is correct.

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Answer: food, chemical

Explanation:

Cellular respiration is a process in which the food or glucose reserve is oxidized so as to produce chemical form of energy in the form of ATP, that is used by the body's cell to perform metabolic activities within the cell. During this process the glucose in the presence of oxygen is converted into water and carbon dioxide and the chemical form of energy so produce is called adenosine triphosphate or ATP. Thus in the end chemical energy is produced.

Answer:  

50 milliliters of acetone solution

Explanation:

If a solution is 40% by volume of acetone, then we have  40 mL of acetone in a 100 mL solution. So if we have 20 mL of acetone, we get: 100 mL solution 40 mL ( CH3) 2CO⋅

20mL (CH3) 2CO  =50mL solution

The volume percent of 40% indicates that 40 ml of acetone is present in 100 ml solution. Then, 20 ml acetone can be made into 50 ml solution.

Volume percentage is a common term used to express the concentration of a solution. Volume percentage of a solution is the ratio of the volume of the solute to the volume of the solvent multiplied by 100.

The volume percentage of the solution measures how much volume of the solute is present in 100 ml of the solution. Thus a 50% by volume solution is 50 ml solute in 100 ml solution.

Given that volume percentage of acetone = 40%.

that is 40 ml of acetone is present in 100 ml of the solution.

Therefore, the volume of the solution containing 20 ml of acetone is :

(20 × 100)/40 = 50 ml.

Therefore, 50 ml of  40% by volume o solution can be made by 20 ml of acetone.

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Answer:

The answer copper carbonate

Answer:

I think it might be liquid

Answer: in a molecular molecules move just enough to stay close together but not to stick

Explanation: