Which of the following best support the claim that the cycling of matter and energy in Earth's interior affects
Earth's surface? Select all correct answers!!!!

A)Tectonic plates move together, apart, and past each other.
B)Lava can be observed rising to Earth's surface in some places.
C)The Earth's crust is much cooler than the Earth's interior.
D)The Earth's inner core is composed mostly of solid iron.

In a cation of Beryllium with a +1 charge, there Protons=4, Neutrons=4, Electrons=3, hence, option B is correct.

When Beryllium loses one electron to form a cation with a +1 charge, it becomes Be+1. The number of neutrons remains the same as in the neutral atom, which is 4. Option B is the right answer since protons equal 4, neutrons equal 4, and electrons equal 3.

The electron configuration of an ion, such as the +1 charge Beryllium cation, determines its characteristics, which impact its reactivity and chemical behavior.

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Answer:

2 electron in 1 energy level

and 8 at second

also 8 at third

because only 4 shells are in the high school level

k,l,m,n

a.) 1 foot = 0.33 yard.

b.) 1 year = 365 days

c) 1 yard = 0.18 rod

d) 1 foot= 0.0001893 mile

e) 1 day = 24 hours

f) 60 seconds = 1 minute

According to the international system of measurement, the conversion factor needed for the following unit conversions are as follows:

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Answer:

I think 1.67 x 10^20

Explanation:

The balanced equation of the half-reaction in acidic conditions is:

The balanced equation of the half-reaction is determined as follows:

Half-reaction: NO₃⁻ → NO

Add electrons to the left-hand side to balance the charges and also add water to the right-hand side to balance the oxygen atoms:

NO₃⁻ + 4H⁺ + 3 e⁻ → NO + 2 H₂O

The reaction occurs in an acidic solution, so H⁺ ions are added to balance the charges.

NO₃⁻ (aq) + 4 H⁺ (aq) + 3 e- → NO (g) + 2 H₂O (l)

Therefore, the half-reaction is balanced and the phases are given.

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Answer:

116 km...

Explanation:

as mentioned in the question, speed is constant....as it is clearly given the speed is 116 km per hour....so it will go 116km in an hour.

Answer:

consisting of microscopically dispersed insoluble particles is suspended throughout another substance. However, some definitions specify that the particles must be dispersed in a liquid, and others extend the definition to include substances like aerosols and gels.

It would require approximately 6 half-lives for the amount of a radioactive isotope to decrease to 3.13% of its original value.

To determine the number of half-lives required for a radioactive isotope to decrease to 3.13% of its original value, we can use the equation:

Final amount = Initial amount * (1/2\()^(number of half-lives)\)

We want the final amount to be 3.13% of the initial amount, which can be expressed as 0.0313 times the initial amount.

0.0313 = 1 * (1/2\()^(number of half-lives)\)

To solve for the number of half-lives, we can take the logarithm (base 1/2) of both sides:

log(0.0313) = log((1/2\()^(number of half-lives)\))

Using logarithmic properties, we can rewrite the equation as:

log(0.0313) = (number of half-lives) * log(1/2)

We can now solve for the number of half-lives:

number of half-lives = log(0.0313) / log(1/2)

Calculating this expression, we find:

number of half-lives ≈ 5.141

Since the number of half-lives must be a whole number, we round up to the nearest whole number.

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The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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The correct answer is: The blue proton is more acidic because its conjugate base is less stable, with a negative charge on the more electronegative oxygen atom. Option C.

In general, the proton that is more accessible to a base will be more acidic. In this case, the red proton is more accessible and therefore more acidic.

This is because the blue proton is surrounded by the four atoms of the carbon chain, giving it less opportunity to interact with a base.

On the other hand, the red proton has a hydrogen atom on one side and an oxygen atom on the other side, making it more accessible to a base and therefore more acidic.

The acidity of a proton is determined by its access to a base. When a proton is surrounded by other atoms, its access to a base is limited, making it less acidic than a proton with fewer atoms around it. This is why the red proton in the compound is more acidic than the blue proton.

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The strongest type of intermolecular force between solute and solvent in the solution of CH\(_{3}\)Cl (g) in CH\(_{3}\)OCH\(_{3}\) (g) is dipole-dipole interaction.

In  CH\(_{3}\)Cl, the molecule has a polar covalent bond between carbon and chlorine atoms. Chlorine is more electronegative than carbon, resulting in a partial negative charge on chlorine and a partial positive charge on carbon. In  CH\(_{3}\)OCH\(_{3}\) , the molecule is also polar due to the oxygen atom's higher electronegativity compared to carbon and hydrogen. This creates a dipole moment in both molecules.

In the solution, the positive end of the  CH\(_{3}\)Cl molecule interacts with the negative end of the  CH\(_{3}\)OCH\(_{3}\) molecule, forming dipole-dipole interactions. These intermolecular forces are stronger than London dispersion forces, which are present in all molecules but are typically weaker. Therefore, the strongest intermolecular force in this solution is dipole-dipole interaction.

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Answer:

milk, lemon juice, toothpaste and baking soda

Answer:

It's compound? It's chemical compound would be represented my letters or numbers

Answer:

The letters in a chemical formula are the symbols for the specific elements. So for example, H means hydrogen, O means oxygen, S means sul fur, C u means copper, F means fluorine, Fe means iron and Au means gold.

Explanation:

Yea, Hope I helped

Brainly appreciated

Answer:

Covalent

Explanation:

Covalent is the sharing of electrons and Ionic is transferring of electrons.

Answer:

Covalent bonds

Explanation:

the interatomic linkage that results from the sharing of an electron pair between two atoms

The nuclear symbol for the isotope formed after loss of just one alpha particle from francium-221 would be Actinium-225 (Ac-225).

When protactinium-229 (Pa-229) loses one alpha particle, it undergoes a single alpha decay. An alpha particle consists of 2 protons and 2 neutrons. Therefore, after the loss of one alpha particle, the isotope formed will have 2 fewer protons and 2 fewer neutrons.

Pa-229 has 91 protons and 138 neutrons (229 - 91 = 138). After losing one alpha particle, the isotope will have 89 protons and 136 neutrons. The element with 89 protons is actinium (Ac). So, the nuclear symbol for the isotope formed after the loss of just one alpha particle is Actinium-225 (Ac-225).

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The number of hamburgers sold on Wednesday is 275.

Let's assume the number of hamburgers sold is x.

According to the given information, the number of cheeseburgers sold is 70 more than the number of hamburgers. So, the number of cheeseburgers sold can be expressed as x + 70.

The total number of hamburgers and cheeseburgers sold is given as 620, so we can set up the following equation:

x + (x + 70) = 620

Combining like terms, we get:

2x + 70 = 620

Subtracting 70 from both sides of the equation:

2x = 550

Dividing both sides by 2:

x = 275

Therefore, the number of hamburgers sold on Wednesday is 275.

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312.5 mL of magnesium chloride stock solution is needed to prepare 1.5 L of 25 mg/mL solution.

This type of chemical process is called dilution. It is the addition of water into a small amount of a concentrated solution or a stock solution to make it less concentrated. In this problem, the equation below is used.

(Concentration of stock solution)(Volume of stock solution needed)=(Resulting concentration of solution)(Resulting volume of solution)

For easier writing of the equation, subscript 1 can be assigned to the concentrated solution and subscript 2 for the diluted solution.

C1*V1=C2*V2

Substituting the given to the formula:

(120 mg/ml)*(V1)=(25 mg/ml)*(1.5 L)

V1= 0.3125 L

V1= 312.5 ml

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Let's check

\(\\ \rm\Rrightarrow C_4H_{2(4)-2}\)

\(\\ \rm\Rrightarrow C_4H_{8-2}\)

\(\\ \rm\Rrightarrow C_4H_6\)

So

Option B

The percent by mass of NaCl in the solution is approximately 16.47%.

To calculate the percent by mass of a solution, you need to determine the mass of the solute (NaCl) and the mass of the entire solution (NaCl + water). Here's how you can calculate it:

Mass of NaCl = 14 g

Mass of water = 71 g

Total mass of the solution = Mass of NaCl + Mass of water = 14 g + 71 g = 85 g

Now, you can calculate the percent by mass of NaCl in the solution:

Percent by mass of NaCl = (Mass of NaCl / Total mass of the solution) * 100

Percent by mass of NaCl = (14 g / 85 g) * 100

Percent by mass of NaCl = 16.47%

Therefore, the percent by mass of NaCl in the solution is approximately 16.47%.

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Answer:

gravity.

Explanation:

Explanation:

2 9 10 7 1 10_20 20_30 30_40 40_ 50 50_60

While both double replacement reactions and combustion reactions involve the breaking and forming of chemical bonds, there are some differences between them in terms of the products that are formed. One thing that can happen in a double replacement reaction but not in a combustion reaction is the formation of a precipitate, which is a solid that forms when two solutions are mixed together and a reaction occurs.

Chemical reactions can be broadly classified into several types based on the nature of the reactants and products involved. Two common types of chemical reactions are double replacement reactions and combustion reactions. While both of these reactions involve the breaking and forming of chemical bonds, there are some differences between them in terms of the products that are formed.

A double replacement reaction is a type of chemical reaction where the cations and anions of two ionic compounds switch places to form two new ionic compounds. This type of reaction is also known as a metathesis reaction. The general equation for a double replacement reaction is:

AB + CD → AD + CB

In this reaction, the reactants AB and CD switch their respective cations and anions to form the products AD and CB. For example, a double replacement reaction between silver nitrate (\(AgNO_{3}\)) and sodium chloride (NaCl) can be represented as:

\(AgNO_{3}\) + NaCl → AgCl + \(NaNO_{3}\)

In this reaction, the silver ion (Ag+) from silver nitrate combines with the chloride ion (Cl-) from sodium chloride to form silver chloride (AgCl), while the sodium ion (Na+) from sodium chloride combines with the nitrate ion (\(NO_{3}\)) from silver nitrate to form sodium nitrate (\(NaNO_{3}\)).

On the other hand, a combustion reaction is a type of chemical reaction where a fuel and an oxidant react to produce heat and light. The general equation for a combustion reaction is:

Fuel + Oxidant → Heat + Light

For example, the combustion of methane (\(CH_{4}\)) in the presence of oxygen (\(O_{2}\)) can be represented as:

\(CH_{4}\) + \(2O_{2}\) → \(CO_{2}\) +\(2H_{2} O\) + Heat + Light

In this reaction, methane (the fuel) combines with oxygen (the oxidant) to produce carbon dioxide (\(CO_{2}\)) and water (\(H_{2} O\)), along with heat and light.

One thing that can happen in a double replacement reaction but not in a combustion reaction is the formation of a precipitate. A precipitate is a solid that forms when two solutions are mixed together and a reaction occurs. In a double replacement reaction, the reactants are typically two aqueous solutions of ionic compounds, which means that the products are also typically aqueous solutions of ionic compounds. However, sometimes the products can be insoluble in water, which means they will form a solid and settle out of the solution. This solid is called a precipitate.

In the example double replacement reaction between silver nitrate and sodium chloride mentioned earlier, the product silver chloride is insoluble in water and will form a precipitate. This means that if the reaction is carried out in a test tube or other container, the precipitate will be visible as a cloudy or milky substance that settles to the bottom of the container.

In a combustion reaction, the reactants are typically a fuel and an oxidant, which means that the products are typically gases or liquids. There is generally no formation of precipitates in a combustion reaction because there are no ionic compounds present that can form insoluble products.

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Answer:

V₂ ≈416.7 mL

Explanation:

This question asks us to find the volume, given another volume and 2 temperatures in Kelvin. Based on this information, we must be using Charles's Law and the formula. Remember, his law states the volume of a gas is proportional to the temperature.

where V₁ and V₂ are the first and second volumes, and T₁ and T₂ are the first and second temperature.

The balloon has a volume of 600 milliliters and a temperature of 360 K, but the temperature then drops to 250 K. So,

Substitute the values into the formula.

Since we are solving for the second volume when the temperature is 250 K, we have to isolate the variable V₂. It is being divided by 250 K. The inverse o division is multiplication, so we multiply both sides by 250 K.

The units of Kelvin cancel, so we are left with the units of mL.

Let's round to the nearest tenth. The 6 in the hundredth place tells us to round to 6 to a 7.

The volume of the balloon at 250 K is approximately 416.7 milliliters.

Two isotopes of any particular element differs on the count of number of neutrons present on its nucleus.

Isotopes are particular atomic species (or nuclides, as specialized term) of a similar component. They have a similar nuclear number (number of protons in their cores) and position in the occasional table (and subsequently have a place with a similar synthetic component), however contrast in nucleon numbers (mass numbers) because of various quantities of neutrons in their cores. While all isotopes of a given component have practically similar substance properties, they have different nuclear masses and actual properties.

The term isotope is framed from the Greek roots isos and topos , signifying "a similar spot"; consequently, the importance behind the name is that various isotopes of a solitary component possess a similar situation on the periodic table. It was begat by Scottish specialist and essayist Margaret Todd in 1913 in an idea to the English scientist Frederick Soddy.

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Answer:

Sodium

Formula : Na

Equivalent mass:23.0

Mark me as Branliest

Answer: D

Explanation:

A control group is the variable that remains constant throughout the whole experiment

The statement which is true about a control group is that it is a test group where the variable is not changed or applied. Thus, the correct option for this question is D.

A control group may be defined as a group that is significantly separated from the rest of the experiment, where the independent variable is being tested. This group reflects the difference between dependent and independent variables.

According to the context of this question, during the course of the experiment, the control groups remains constant throughout the process. Researchers compare the results of a treatment group to the control group in order to determine the effect size, also known as the treatment effect.

Therefore, the correct option for this question is D.

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Answer : The original volume of gas is \(365cm^3\)

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)

where,

\(P_1\) = initial pressure of gas = 800 torr

\(P_2\) = final pressure of gas at STP = 760 torr

\(V_1\) = initial volume of gas = ?

\(V_2\) = final volume of gas at STP = \(450.0cm^3\)

\(T_1\) = initial temperature of gas = \(-40^oC=273+(-40) =233K\)

\(T_2\) = final temperature of gas at STP = \(0^oC=273+0=273K\)

Now put all the given values in the above equation, we get:

\(\frac{800torr\times V_1}{233K}=\frac{760torr\times 450.0cm^3}{273K}\)

\(V_1= 364.8cm^3\approx 365cm^3\)

Therefore, the original volume of gas is \(365cm^3\)

For an ion, the electron dot structure shows the number of valence electrons in the ion.

The Lewis dot structure shows valence electrons as dots. These valence electrons are the electrons in the outermost shell of an atom or ion. They are the electrons that may participate in a chemical reaction.

The electron dot structures of nitrogen, oxygen, and fluorine ions are shown in the images attached.

The common thing about all these ions is that they have all attained a stable octet as shown.

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Answer:

element and compound.

Explanation:

reason

an element is a pure substance that cannot be broken down into simpler substances by any ordinary physical or chemical process.

and compound is a pure substance that consists of two or more elements held together in fixed proportions by natural forces called chemical bonds.

homogeneos and heterogenous mixtures are considered impure substances because they dont have a definite composition.

In chemistry, pure substances have been defined by matter that has characteristic properties. An element and compound are pure substances. Thus, options 1, and 2 are correct.

Pure substances have been the matter that is characterized by the presence of a fixed chemical composition that cannot be physically separated by the processes like filtration, evaporation, etc.

Elements and compounds are pure substances as elements are not broken physically or chemically to form simple -small substances like zinc. Furthermore, compounds are formed by the combination of pure substances like water.

Homogeneous mixtures and heterogeneous mixtures are not pure substances as they lack fixed ratios and proportions that cannot be said to have definite composition.

Therefore, options 1 and 2. are elements and compounds are pure substances.

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