Plz help! :) :D I will mark you as BRAINLIEST for the best answer!!! ( I actually mean it)
Physical and Chemical Properties of Magnesium

Here is an EXAMPLE of how it has to be like. Instead of Mercury, you HAVE to do Magnesium

Physical Properties of Mercury: ”I’m a highly stable element, so you can count on me”

Chemical Properties of Mercury: ”I love to travel but I do corrode aluminum so we won’t be flying off on adventures in airplanes planes anytime soon”

Answer:

Explanation:

The moving part won't move on its own there's a force but the force isn't enough for something like a bike chain it need grease to move smoothly or else it will just be super stuck or slow.

Answer:

because grease produce more fiction which helps moving part of machine not get jamm while working

Answer:

iIllustrated Glossary of Organic Chemistry - Atomic radius. Atomic radius: The radius of an atom. This distance between an atom's nucleus and outer electron shell. ... Atomic radius differs with the bonding state of an atom (for example an nonbonded atom of an element versus the same element within a covalent bond).

Explanation:

What would be the new volume if the pressure on 600 mL is increased from 90 kPa to 150 kPa? V = Pu V₂ = 360 mL ~ 400 mL 6.

Answer:

A. Compounds

Explanation:

Firstly, don't let the word "pure" confuse you; this is pretty much irrelevant to the question.

The key to answering this question lies in "substance" and "more than one type of element chemically bonded."

Something you ought to memorize is that a substance is either an element or compound. Therefore, you can eliminate choices B./C.

Next, use the part of the definition that says "more than one type of element chemically bonded" to conclude that it's a compound. Not only is this the definition of a compound, but the fact that is says more than one type of element should automatically tell you that it is different from just a regular element (Choice D.).

Δ'∘ for the reaction is approximately -1.1 kJ/mol.

Δ for the reaction is approximately -1.69 kJ/mol.

The initial concentrations of reactant and product being 1 M is not consistent with the conditions at which Δ'∘ is measured, as the concentrations used for the calculation are different (1.2 M and 0.65 M).

To determine the values of Δ'∘ and Δ for the given interconversion reaction, we need to use the equation:

Δ'∘ = -RT ln(K'eq)

Where:

Δ'∘ is the standard Gibbs free energy change for the reaction at 25 °C,

R is the gas constant (8.314 J/(mol·K)),

T is the temperature in Kelvin,

ln represents the natural logarithm,

K'eq is the equilibrium constant at the given temperature.

Given that K'eq is 1.97, we can calculate Δ'∘ as follows:

Δ'∘ = -(8.314 J/(mol·K))(298 K) ln(1.97)

Δ'∘ ≈ -1.1 kJ/mol

Therefore, Δ'∘ for the reaction is approximately -1.1 kJ/mol.

To calculate Δ, the Gibbs free energy change under the given conditions with adjusted concentrations, we can use the equation:

Δ = Δ'∘ + RT ln(Q)

Where:

Δ is the Gibbs free energy change,

Δ'∘ is the standard Gibbs free energy change (previously calculated),

R is the gas constant (8.314 J/(mol·K)),

T is the temperature in Kelvin,

ln represents the natural logarithm,

Q is the reaction quotient.

Given the concentrations of fructose 6-phosphate (1.2 M) and glucose 6-phosphate (0.65 M), the reaction quotient (Q) is:

Q = ([glucose 6-phosphate]^n)/([fructose 6-phosphate]^m)

Q = (0.65 M)^1 / (1.2 M)^1

Q ≈ 0.54

Now, we can calculate Δ using the equation:

Δ = -1.1 kJ/mol + (8.314 J/(mol·K))(298 K) ln(0.54)

Δ ≈ -1.1 kJ/mol - 0.59 kJ/mol

Δ ≈ -1.69 kJ/mol

Therefore, Δ for the reaction is approximately -1.69 kJ/mol.

Among the given statements, the ones that are consistent with the conditions at which Δ'∘ is measured are:

The temperature is 273 K.

The pH is 7.

The pressure is 101.3 kPa (1 atm).

The initial concentrations of reactant and product being 1 M is not consistent with the conditions at which Δ'∘ is measured, as the concentrations used for the calculation are different (1.2 M and 0.65 M).

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The reactant that runs out first and The reactant that determines the maximum amount of product that can be formed in a reaction are the correct options.

:In a chemical reaction, a limiting reactant is the one that gets used up first, limiting the amount of product that can be formed. The limiting reactant determines the maximum amount of product that can be produced in a chemical reaction. The other reactants involved in the reaction are called excess reactants because they exist in abundance and do not limit the reaction.

\If the limiting reactant is completely consumed, the reaction ceases even if there is still an excess of other reactants left. Thus, the limiting reactant controls the reaction.

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Answer:

\(V_{base}=6.0mL\)

Explanation:

Hello there!

In this case, by considering that the reaction between sodium hydroxide and hydrochloric acid is in a 1:1 mole ratio of these two reactants, we are able to use the following equation relating the concentration and volume of each one:

\(M_{acid}V_{acid}=M_{base}V_{base}\)

In such a way, by solving for the volume of the base, we will obtain:

\(V_{base}=\frac{M_{acid}V_{acid}}{M_{base}} \\\\V_{base}=\frac{0.5M*24mL}{2.0M}\\\\V_{base}=6.0mL\)

Regards!

The Ksp equation for sodium bicarbonate (NaHCO3) should be written as:
Ksp = [Na+][HCO3-]

In this equation, Ksp represents the solubility product constant, [Na+] represents the concentration of sodium ions (Na+), and [HCO3-] represents the concentration of bicarbonate ions (HCO3-).

The concentration of the sodium ions and bicarbonate ions in the solution are represented by [Na+] and [HCO3-], respectively. Ksp is a constant at a given temperature and represents the product of the concentration of the ions raised to their stoichiometric coefficients in the balanced chemical equation.

This equation is useful for calculating the solubility of NaHCO3 in a given solvent, as well as predicting the formation of precipitates when two solutions containing ions that can form an insoluble salt are mixed.

If the product of the ion concentrations exceeds the Ksp value, the solution becomes supersaturated, and a precipitate forms.

In summary, the Ksp equation for sodium bicarbonate (NaHCO3) is a measure of its solubility in water, and it relates to the concentration of sodium ions (Na+) and bicarbonate ions (HCO3-) in the solution.

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Answer: A phylogenetic tree is an evolutionary tree that shows the evolutionary relationships between different groups of animals, Cladograms give a hypothetical picture of the actual evolutionary history of the organisms

Explanation: Hope this helps you out :)

The results are shown in the following table:

Test Tube Number of moles of zinc Heat absorbed by water (J) Change in internal energy of copper(II) sulfate (J) Reaction enthalpy (J/mol)

3 0.00765 1046 -1046 -13,600

4 0.00385 2093 -2093 -54,100

Here are the calculations for test tubes 3 and 4:

Test Tube

Number of moles of zinc:

mass of zinc / molar mass of zinc = 0.500 g / 65.38 g/mol = 0.00765 mol

Heat absorbed by the water:

Q = mCΔT = 10.0 g * 4.186 J/g°C * 25°C = 1046 J

Change in internal energy of the copper(II) sulfate:

ΔU = -Q = -1046 J

Reaction enthalpy, in joules/mole:

ΔH = -ΔU / n = -1046 J / 0.00765 mol = -13,600 J/mol

Test Tube 4

Number of moles of zinc:

mass of zinc / molar mass of zinc = 0.250 g / 65.38 g/mol = 0.00385 mol

Heat absorbed by the water:

Q = mCΔT = 10.0 g * 4.186 J/g°C * 50°C = 2093 J

Change in internal energy of the copper(II) sulfate:

ΔU = -Q = -2093 J

Reaction enthalpy, in joules/mole:

ΔH = -ΔU / n = -2093 J / 0.00385 mol = -54,100 J/mol

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In order to determine the element being oxidized in the redox reaction, we need the complete balanced equation for the reaction.

The given information "C3H8O2 + KMnO4" is not a balanced equation and lacks the products and reaction conditions.

To identify the element being oxidized, we need to compare the oxidation states of the elements before and after the reaction. In a redox reaction, oxidation involves an increase in oxidation state, while reduction involves a decrease in oxidation state.

Please provide the complete balanced equation for the reaction, including the products and any other relevant information, so I can assist you in determining the element being oxidized.

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Answer:

Can be absorbed and transformed into heat

Explanation:

Answer:

Refer to the picture.

Answer:

D.geothermal energy

Explanation:

The State of Nevada has abundant solar, wind, and biomass energy sources, but has more potential for geothermal energy production than any other state.

Answer:

i dont think so

Explanation:

is there a image to explain this ? if so it would help ALOT

ANSWER

increasing the NO concentration in the flask will shift the reaction to the left

option D

EXPLANATION

Given that

To identify the direction of the equilibrium, follow the steps below

Step 1: State Le Chatelier's principle

Le Chatelier's principle state that when an external constraint such as temperature, pressure, or concentration is imposed on a chemical equilibrium system, the equilibrium arrow will adjust so as to annul the effect of the constraint.

Looking at the reaction, you will see that the number of moles of reactants is equal to the number of moles of the products. Hence, pressure will not have effect on the reaction.

Since the reaction is a reversible reaction, the products and reactants are produced simultaneously.

Therefore, adding more of the products will favor the production of the reactants ( favors the reverse reaction)

Hence, increasing the NO concentration in the flask will shift the reaction to the left

Answer:

NO2=Nitrogen dioxide

KCL=potassium chloride

NH3=Ammonia

The precipitate in the reaction between MgCl2 (aq) and 2NaOH (aq) is Mg(OH)2 (s).

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The pH of sour milk is less than 7. To determine the concentration of lactic acid in sour milk, you could titrate with a base. The more sour the milk is, the more base will be needed to neutralize it. Therefore, all statements make sense in terms of food titration.

To estimate the concentration of certain ingredients, such as acids or bases, in a food sample, the food titration technique is used in food analysis and quality control. Milk's pH drops when it goes sour, indicating an increase in acidity. A solution is acidic if its pH is lower than 7.

Titrations are a popular analytical method for figuring out how much acid or base is in a solution. To achieve the endpoint, where the acidity is neutralised, the titration process will need additional base as the milk grows more sour and its acidity rises.

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Answer: The answer is B. The pressure inside the tires increased.

Explanation:

The relationship between the pressure, volume, and temperature of a gas is described by the ideal gas law, which is usually written as:

\($$PV = nRT$$\)

where:

- \(\(P\)\) is the pressure,

- \(\(V\)\) is the volume,

- \(\(n\)\) is the number of moles of gas,

- \(\(R\)\) is the ideal gas constant, and

- \(\(T\)\) is the temperature (in Kelvin).

In this case, the volume \(\(V\)\) and the number of moles \(\(n\)\) of air in the tires stay the same. The temperature \(\(T\)\) is increasing. Therefore, for the equation to remain balanced, the pressure \(\(P\)\) must also increase.

So, the answer is B. The pressure inside the tires increased.

Answer:

is under lower pressure

Explanation:

I think because arteries is for oxygenated blood so it flows very fast and the pressure is big but for veins , it is for deoxygenated blood that flows slower than oxygenated blood, so of course the pressure is lower.

When diluting a strong acid with water, it is recommended to add the acid to the water and not the other way around. The statement is true.

This is because adding water to the acid can cause a rapid and exothermic reaction, leading to splattering and potential injury.

When the acid is added to the water, the heat generated is absorbed by the water, reducing the potential for splattering. Additionally, adding the acid to water allows for better mixing and reduces the risk of creating concentrated acid pockets that can be dangerous.

Overall, it is important to follow safe laboratory practices when working with acids and to consult with a trained professional if you are unsure about the proper procedures.

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Answer:

d

Explanation: i think

The required partial pressure of neon in mmHg) in the tank is 272 mmHg.

The partial pressure of neon in the tank is 152 mmHg.A mixture of neon, argon, and helium gases are contained in a tank. The total pressure in the tank is 600. mmHg, while the partial pressures of neon and argon are 120 torr and 0.20 atm, respectively.To calculate the partial pressure of neon in mmHg, we need to convert the pressure of argon to mmHg:0.20 atm x 760 mmHg/atm = 152 mmHgNext, add the partial pressures of neon and argon:120 torr + 152 mmHg = 272 mmHg

Therefore, the answer is 272 mmHg, option (b) is correct.

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Answer:

I think it's B.

Answer:

Explanation:

The percent composition of carbon in acetic acid is 40.002%.