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Answer:

the correct answer is b antifreeze protects the radiator during summer in winter.

Explanation:

Antifreeze is (typically mixed with water) to help manage the engine during extreme temperatures. As the temperature fluctuates between hot and cold coolant is distributed throughout the engine block to sustain even operating temperature.

Answer:

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below

Explanation: welcome

Answer: If a neutral atom gains electrons, then it will become negatively charged

Explanation: If a neutral atom gains electrons, then it will become negatively charged. If a neutral atom loses electrons, then it become positively charged.

Answer:

Substance C

Explanation:

Substance C would be the answer because Substance C has a lower attraction level. Because of this, it takes more energy to take out of in order to become a liquid.

The internal energy of a human body is the net energy contained in the body due motion of its particle or molecules.

In a human body the internal energy is stored . It increases when the temperature of the body rises, or when the body observes some changes. Internal energy we can say that is the sum of kinetic and potential energy of all particles in the body.

Internal energy is a state function of a system and is an extensive quantity. Every substance possesses a fixed quantity of energy which depends upon  its chemical nature and also on its state of existence. Every substance have a definite value of Internal energy.

The change in the Internal energy of a reaction may be considered as the difference between the internal energies of the two states.

ΔU = \(E_{B}\) - \(E_{A}\)     where \(E_{B}\) and \(E_{A}\) are the initial energies of states A and B. Or we can also write the equation as:

ΔU = ΔE

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Answer:

salt water

Explanation:

beacuse it is made up of 2 elements,NaCl and H2O

B.) have a better chance of colliding with other atoms.

Answer:

Did this for an assignment, reword and shorten it yourself, also give brainliest

Explanation:

The idea of Olive Oil coffee from a chemistry perspective brings several factors into consideration, such as polarity, solubility, density, melting points, boiling points, and types of mixtures.

Firstly, olive oil is a nonpolar substance, while coffee is primarily composed of polar compounds, such as caffeine and various acids. Polarity refers to the distribution of charge within a molecule, and polar and nonpolar substances do not readily mix. This fundamental difference in polarity makes it challenging to create a stable and homogeneous mixture between olive oil and coffee.

Secondly, solubility plays a crucial role. Coffee is soluble in water due to its polar components, allowing the extraction of flavor compounds when brewed. However, olive oil is not soluble in water, so attempting to mix it with coffee would result in phase separation, with the oil floating on top or forming droplets dispersed throughout the coffee. This lack of solubility further contributes to an unstable and unappealing mixture.

Density is another relevant factor. Olive oil is less dense than water, which means it would naturally rise to the top when mixed with coffee. This separation of phases would lead to an unpleasant texture and appearance in the cup.

Additionally, the melting points and boiling points of olive oil and coffee differ significantly. Olive oil has a higher melting point and boiling point compared to the volatile compounds found in coffee. When attempting to mix hot coffee with olive oil, the heat could cause the oil to evaporate or decompose, altering its flavor and aroma.

Moreover, considering the types of mixtures, the combination of olive oil and coffee would likely result in an unstable heterogeneous mixture rather than a homogeneous one. Homogeneous mixtures are uniform throughout, while heterogeneous mixtures have distinct phases. The immiscibility of oil and water would make it challenging to achieve a stable and well-blended mixture.

To stabilize such a mixture, emulsifiers or surfactants could be employed to promote the dispersion of oil in water. However, finding an appropriate emulsifier that can effectively bind polar and nonpolar components in coffee without compromising its taste and texture would be a difficult task.

In conclusion, the idea of Olive Oil coffee from a chemistry standpoint faces challenges related to the differences in polarity, solubility, density, melting points, boiling points, and the types of mixtures involved. These factors make it highly unlikely to achieve a stable and appealing combination.

Answer:

ty sa pointd

Answer:

If Mountain lions are removed from a habitat/ecosystem, their prey will overpopulate, which may lead to extinctions on the pray of the secondary consumers. ex. A mountain lion would eat rabbits who eat berries, if there are no mountain lions to kill the rabbits, then the berries may be scarce

Explanation:

bc i know everthing

Reaction b,c and d could be written as net ionic equations.

The electrolyte in the solution produces ions.  

The equation of a chemical reaction can be expressed in the equation of the ions  

For strong electrolytes (the ionization rate = 1) is written in the form of separate ions, while the weak electrolyte (degree of ionization <1) is still written as an un-ionized molecule  

In the ion equation, there is a spectator ions that is the ion which does not react because it is present before and after the reaction  

When these ions are removed, the ionic equation is called the net ionic equation  

For gases and solids including water (H₂O(l)) can be written as an ionized molecule  

So only the dissolved compound is ionized ((expressed in symbol aq)  

To see the reaction can be expressed in terms of the net ionic equation, we must see that there are two or more ions that are the same from both sides of the reactant and the product in the form of aquoeus (because the form of compounds in the form of gases, solids and liquids will remain molecular and non-ionized)

CH4 (g) + 2 O2 (g) = CO2 (g) + 2 H2 O(g)

No⇒no compounds in the aqueous form

Cu(s) + 2 AgNO3 (aq) = 2 Ag(s) + Cu(NO3 )2 (aq)

Cu(s) + 2 Ag⁺+ 2NO3⁻ (aq) = 2 Ag(s) + Cu²⁺ +2NO3⁻ (aq)

Cu(s) + 2 Ag⁺(aq) = 2 Ag(s) + Cu²⁺(aq)

yes, because there are NO3 (spectators ion) on both sides

MgCl2 (aq) + 2 KOH(aq) = Mg(OH)2 (s) + 2 KCl(aq)

Mg²⁺(aq)+2Cl⁻ (aq) + 2K⁺(aq)+2OH⁻(aq) =  Mg(OH)2 (s)+ 2K⁺(aq)+2Cl⁻(aq)

Mg²⁺(aq)+2OH⁻(aq) =  Mg(OH)2 (s)

yes, because there are 2Cl⁻ (aq) and 2K⁺(aq (spectators ion) on both sides

CaCO3 (s) + 2 HCl(aq) = CaCl2 (aq) + CO2 (g) + H2 O(l)

CaCO3 (s) + 2 H⁺(aq)+2Cl⁻(aq) = Ca²⁺(aq)+2Cl⁻ (aq) + CO2 (g) + H2 O(l)

CaCO3 (s) + 2 H⁺(aq) = Ca²⁺(aq) + CO2 (g) + H2 O(l)

yes, because there are Cl⁻ (spectators ion) on both sides

The moles of Cl₂(g) will be present at equilibrium is 3.94 × 10⁻⁴ mol

To determine the number of moles of Cl₂(g) at equilibrium, we need to use the given equilibrium constant (Kₑ) and the initial concentrations of CO(g) and COCl₂(g).

Given:

[CO(g)] = 0.3500 mol

[COCl₂(g)] = 0.05500 mol

Kₑ = 1.2 × 10²

The balanced equation for the reaction is:

CO(g) + Cl₂(g) ⇌ COCl₂(g)

Let's denote the number of moles of Cl₂(g) at equilibrium as x. At the start, we have [Cl₂(g)] = 0 mol, but it will change by x at equilibrium.

Using the equilibrium expression, we can write:

Kₑ = [COCl₂(g)] / ([CO(g)] * [Cl₂(g)])

Plugging in the values:

1.2 × 10² = [COCl₂(g)] / (0.3500 * [Cl₂(g)])

To solve for [Cl₂(g)], we need to isolate it on one side of the equation:

[Cl₂(g)] = [COCl₂(g)] / (0.3500 * Kₑ)

Now, let's substitute the given values:

[Cl₂(g)] = 0.05500 / (0.3500 * 1.2 × 10²)

[Cl₂(g)] ≈ 3.94 × 10⁻⁴ mol

Therefore, approximately 3.94 × 10⁻⁴ moles of Cl₂(g) will be present at equilibrium.

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The question was Incomplete, Find the full content below:

Starting with 0.3500 mol CO(g) and 0.05500 mol COCl₂(g) in a 3.050-L flask at 668 K, how many moles of Cl₂(g) will be present at equilibrium

CO(g) + Cl₂(g) ⇄ COCl₂(g)  Ke 1.2 x 10^{2} at 668 K

Answer:

Number of moles in 20.5 grams of calcium (Ca) = 0.5 moles (Approx.)

Explanation:

Given:

Amount of calcium (Ca) = 20.5 grams

Find:

Number of moles in 20.5 grams of calcium (Ca)

Computation:

Number of moles = Gram weight / Atomic weight of substance

We know that, Atomic weight of calcium (Ca) is 40.078 u

Number of moles in 20.5 grams of calcium (Ca) = Amount of calcium (Ca) / Atomic weight of calcium (Ca)

Number of moles in 20.5 grams of calcium (Ca) = 20.5 / 40.078

Number of moles in 20.5 grams of calcium (Ca) = 0.511

Number of moles in 20.5 grams of calcium (Ca) = 0.5 moles (Approx.)

Answer:

I think it's raising an objective higher to increase it....I don't really know but here's an explanation I researched on.

Explanation:

To increase the gravitational potential energy of an object, the object show be raised higher. The higher the object, the higher gravitational potential energy.

Physics is a vast field that addresses a wide range of questions about the nature of the physical world. Probing questions can help to explore this field and encourage critical thinking and deep exploration of its topics.

Probing questions are open-ended questions asked to gather information, encourage critical thinking and deep exploration of a particular topic. Physics is a natural science that studies matter and its motion through space-time. It is a branch of science that deals with the fundamental nature of the universe and seeks to explain how and why objects behave as they do in the physical world.The following are some examples of probing questions within the scope of physics:What is the nature of light-The nature of light is an important topic within the scope of physics. It refers to the dual nature of light, as both a wave and a particle. Light behaves as a wave when it is traveling through space and as a particle when it is interacting with matter.How do magnets work-Magnets are a common object in the world around us, and they have a broad range of applications. They work by producing a magnetic field, which can attract or repel other magnetic objects. This topic lies within the scope of physics.What is the relationship between energy and matter-Energy and matter are two fundamental concepts in physics. The relationship between them is described by Einstein's famous equation E=mc2, which states that matter and energy are two forms of the same thing and are interchangeable. The study of the relationship between energy and matter lies within the scope of physics.What is the nature of the universe?The study of the universe's nature is one of the most significant topics within the scope of physics. This question addresses the origins and properties of the universe, its components, and the laws that govern its behavior.

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Answer:

C. Egg

Explanation:

has more higher concentration on water.

Given the reaction between CS2 and oxygen expressed as:

Given the following pramters

Mass of CS2 = 20grams

Mass of O2 = 10grams

Determine the mole of CS2

Determine the mole of oxygen

Since there are 3 atoms of oxygen, 1 atom will have:

Since the mole of oxygen is less than the mole ofCS2, hence O2 will b the limiting reactant while CS2 will be the excess reactant

Answer:

(a) GaF3, gallium(III) fluoride

(b) LiH, lithium hydride

(c) AlI3, aluminum(III) iodide

(d) K2S, potassium sulfide

Answer:

c. The waves from the speaker are mechanical waves.

d. The frequency or amplitude of the waves could change.

g. The speaker does not change the wave type.

These statements are true. The waves that come out of the speaker are mechanical waves, meaning they require a medium to travel through, such as air or water. The frequency and amplitude of the waves could change, depending on the characteristics of the sound being played through the speaker. The speaker does not change the type of wave from mechanical to electromagnetic, or vice versa.

Answer:

The mass of HCN is 79.65 g.

The mass of reactant which remain at the end of both reactions is 88.5 g.

Explanation:

Given that,

Mass of ammonia = 50.2 g

Mass of methane = 48.4 g

Hydrogen cyanide, HCN, can be made by a two-step process

Ammonia reacts with O₂ to give nitric oxide NO.

The reaction is,

\(4NH_{3}+5O_{2}\Rightarrow 4NO+6H_{2}O\)

We need to calculate the mole of NO

Using given data,

2.25 g NH_{3}=\dfrac{50.2}{17}= 2.95\ mole\ NH_{3} \)

\(4\ mole NH_{3}\ glose 4\ mol NO\)

2.95 mol NH₃ will produced 2.95 mol NO

Then nitric oxide reacts with methane,

The reaction is,

\(2NO+2CH_{4}\Rightarrow 2HCN+2H_{2}O+H_{2}\)

We need to calculate the mole of methane

Using given data,

\(mole\ of\ methane=\dfrac{48.4}{16}\)

\(mole\ of\ methane = 3.03\ moles\)

2 mole NO produced 2 mole HCN

2.95 mol NO will produced \(\dfrac{2.95\times3.03}{3.03}\)= 2.95 mol HCN

We need to calculate the mass of HCN

Using formula of mass

\(m=N\times M\)

Where, N = number of mole

M = molecular mass

Put the value into the formula

\(m=2.95\times27\)

\(m= 79.65\ g\)

The mass of HCN is 79.65 g.

We need to calculate the mass of NO

Using formula of mass

\(m=N\times M\)

Where, N = number of mole

M = molecular mass

Put the value into the formula

\(m=2.95\times30\)

\(m= 88.5\ g\)

Hence, The mass of HCN is 79.65 g.

The mass of reactant which remain at the end of both reactions is 88.5 g.

Answer:

compared to sodium, silicon has a higher ionization energy meaning it takes more energy to remove electrons.

Explanation:

hope this helps

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The  volume of acetone would be required to purify a 5.0g sample of compound is 58.82ml

Let use the solubility data of acetone provided to calculate the volume.

First we will need to calculate the solubility of Y in 25 degree.

   Solubility of Y= 0.12g/10ml= 0.012g/ml.

Solubility of y in boiling acetone = 0.85g/10ml =0.085g/ml.

In order to purify y, we need to dissolve the amount of y in the 5.0g sample.

The amount of acetone needed to dissolve y in the sample is

amount acetone= mass of y/ solubility of y in boiling acetone.

amount acetone= 5.0g/0.085g/ml= 58.82ml.

Therefore, the  volume of acetone would be required to purify a 5.0g sample of compound is 58.82ml

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If the [OH-] concentration is 5.9 x 10^(-M), the pOH of the solution is approximately -4.77 and the solution is basic.

To calculate the pOH of a solution, we can use the formula:

pOH = -log[OH-]

Given that the [OH-] concentration is 5.9 x 10^(-M), we can substitute this value into the formula:

pOH = -log(5.9 x 10^(-M))

Calculating this expression, we find:

pOH = -log(5.9 x 10^(-M))

pOH ≈ -log(5.9) + (-log(10^(-M)))

Since log(10^(-M)) is equal to -M, the equation simplifies to:

pOH ≈ -log(5.9) - M

Now, we need the value of M (the exponent) to calculate the exact pOH value. It appears that the value of M is missing in the given information. However, assuming M is a positive value, we can continue the calculation.

If we consider M = 6, for instance, the equation becomes:

pOH ≈ -log(5.9) - 6

Now, we can evaluate the expression:

pOH ≈ 1.23 - 6

pOH ≈ -4.77

Therefore, if the [OH-] concentration is 5.9 x 10^(-M), the pOH of the solution is approximately -4.77.

To determine whether the solution is acidic, basic, or neutral, we can use the relationship between pH and pOH. The sum of the pH and pOH of a solution at 25°C is always equal to 14.

Since pOH = -4.77, the pH would be:

pH = 14 - pOH

pH ≈ 14 - (-4.77)

pH ≈ 18.77

A solution with a pH above 7 is considered basic. In this case, the calculated pH is greater than 7. Therefore, the solution is basic.

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The overall chemical equation obtained by combining the intermediate equations is: CH4 + 2O2 → CO2 + 2H2O

According to this question, methane gas reacts with oxygen in a combustion reaction to produce carbon dioxide and water as products.

The chemical equation for the reaction is as follows:

CH4 + O2 → CO2 + H2O

However, the equation is balanced i.e. the number of atoms of each element on both sides of the equation is not the same. We balance the equation using coefficients placed in front of the compound/element as follows:

CH4 + 2O2 → CO2 + 2H2O

Therefore, in words, the correct statement for the balanced equation is: Upper C upper H subscript 4 plus 2 upper O subscript 2 (g) right arrow upper C upper O subscript 2 (g) plus 2 upper H subscript 2 upper O (l).

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Answer:

A on EDGE 2022

Explanation:

The oxidation state of nitrogen (N) in NaNO3 is +5. option B

To determine the oxidation state of nitrogen (N) in sodium nitrate (NaNO3), we need to assign oxidation numbers to each element in the compound.

In NaNO3, we know that the sodium ion (Na+) has a +1 oxidation state because it is an alkali metal. Oxygen (O) typically has an oxidation state of -2 in compounds, and there are three oxygen atoms in NaNO3. Since the compound is neutral, the sum of the oxidation states must be zero.

Let's assume that the oxidation state of nitrogen is x. Therefore, we can set up the equation:

(+1) + x + (-2) * 3 = 0

Simplifying the equation:

+1 + x - 6 = 0

x - 5 = 0

x = +5

Therefore, the oxidation state of nitrogen (N) in NaNO3 is +5.

The oxidation state of an element indicates the number of electrons it has gained or lost in a compound. In this case, the nitrogen atom in NaNO3 has gained five electrons to achieve a stable oxidation state of +5.

It is important to note that oxidation states are formal charges and do not necessarily represent the actual distribution of electrons in a compound. They are assigned based on a set of rules and can be useful in understanding the reactivity and behavior of elements in chemical reactions.

Option B

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Answer:

Two positive aspects of using methane recapture systems are able to generate significant electricity. Another benefit is that the process of anaerobic digestion creates heat that can be used to warm buildings where animals are kept

Answer:  The correct answer is;

Two positive aspects of using methane recapture systems include lowering the impact on greenhouse gasses and the production of energy. Methane is a very potent greenhouse gas that is contributing to global warming. As a result, the recapturing process reduces the methane impacts of global warming by reclaiming and reusing the gas for other purposes. Recaptured methane can be stored and used to generate electricity or used as fuel to power updated vehicles and other engines on the farm. The overall benefits from this combination are reducing impacts causing global warming and lower the cost of electricity or fuel on the farm.

Explanation:  This answer has been confirmed correct.

4. The process which leads to transition from the above task are as follows:

5. The two processes that cause transition from each given below:

6. The major reason why water shortages are the problems for many people around the world is simply because of climatic change which alters the weather of a given place at a period of time, thereby leading to water insufficiency.

Melting refers to a chance of state of matter which refers to the process whereby a solid substance changes to liquid.

From the context of the above task, river ice melts into river in a process known as melting.

In conclusion, we can now deduce from the explanation given above that transition is a process which involves the change in form of matter.

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Answer:

301.15 K

Explanation:

Answer:

Explanation:

An element with 70 protons and a mass of 170 would be considered radioactive.

In general, an element with an atomic number (number of protons) greater than 82 tends to be radioactive. Since the element in question has 70 protons, which is less than 82, it does not fall into the category of naturally radioactive elements. However, it is important to note that the stability of an element also depends on the balance between protons and neutrons in the nucleus. Without information about the number of neutrons in the nucleus, we cannot determine the stability of this specific element definitively.