10.8 1.0
Electronegativity difference of Mg and O:

yes
no

When the hydrate of CuSO4·5H2O (copper sulfate pentahydrate) is heated, it undergoes a chemical reaction that results in the loss of water molecules, leaving behind anhydrous CuSO4 (copper sulfate). This process is known as dehydration. The reaction proceeds in the direction of the products as the anhydrous CuSO4 is the thermodynamically stable form of copper sulfate at high temperatures.

Copper sulfate pentahydrate (CuSO4·5H2O) is a crystalline compound that contains five water molecules (H2O) per formula unit. When this compound is heated, the water molecules are lost, and the remaining compound is anhydrous CuSO4. This process is known as dehydration, and it is an example of a chemical reaction.

The chemical equation for the dehydration of copper sulfate pentahydrate can be represented as follows:

CuSO4·5H2O(s) → CuSO4(s) + 5H2O(g)

In this equation, the arrow points in the direction of the products, indicating that the reaction proceeds in that direction. This means that, upon heating, the hydrate of copper sulfate loses its water molecules, and the anhydrous form of the compound is formed.

The driving force for this reaction is the thermodynamic stability of anhydrous CuSO4 at high temperatures. Anhydrous CuSO4 is more stable than copper sulfate pentahydrate at temperatures above 100°C, and as such, the reaction proceeds in the direction of the products, leading to the formation of anhydrous CuSO4.

In conclusion, the dehydration of copper sulfate pentahydrate results in the formation of anhydrous CuSO4, and the reaction proceeds in the direction of the products due to the thermodynamic stability of anhydrous CuSO4 at high temperatures.

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I=0,1,2 for an orbital quantum number for M shell (n=3).

n = 3 (Given)

Depending on the amount of n, l might range from 0 to (n – 1).

∴ For n = 3 l = 0, 1, 2

M l can have ( 2 l + 1) values for a given value of l.

For l = 0, m = 0, l = 1, m = -1, 0, 1 and l = 2, m = -2, - 1, 0, 1 and 2, respectively

∴ For n = 3, l = 0, 1, 2, m = 0, 1, 0, 1, 2, and m = 2, 1, 0, 1, 2, respectively.

L equals 2 for a 3D orbit.

The number of possible values for ml for a given value of l is (2l + 1), or 5.

∴ For l = 2 m\s2\s = - 2, - 1, 0, 1, 2

Only the orbitals 2s and 2p are possible from the set. 3f and 1p are incompatible.

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[ES] - D. The [S] required to reach ½ Vmax for enzymes that exhibit hyperbolic kinetic behavior; Km - B. Approximately equal to [Etotal] at saturating conditions. kcat - C. Is directly proportional to the rate of the slowest step of the enzyme. Vmax - A. Equal to the velocity (V0) at saturating conditions.

Here is the matched list:

A. Equal to the velocity (V0) at saturating conditions - Vmax
B. Approximately equal to [Etotal] at saturating conditions - Km
C. Is directly proportional to the rate of the slowest step of the enzyme - kcat
D. The [S] required to reach ½ Vmax for enzymes that exhibit hyperbolic kinetic behavior - [ES]

So, the final answer is : [ES]- D. The [S] required to reach ½ Vmax for enzymes that exhibit hyperbolic kinetic behavior ; Km- B. Approximately equal to [Etotal] at saturating conditions; kcat- C Is directly proportional to the rate of the slowest step of the enzyme; Vmax- A. Equal to the velocity (V0) at saturating conditions.

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Answer:  the empirical formula of potassium persulfate is KSO₄, and its molecular formula is K₂S₂O₇.

Explanation:  the empirical formula of potassium persulfate is KSO₄, and its molecular formula is K₂S₂O₇.

Answer:

that the polar bear will come out again in 2 years

Answer:

Sodium Aluminate

Formula:-

\(\quad{:}\longrightarrow\sf NaAlO_2\)

Melting points and boiling points of some ionic compounds

\(\boxed{\begin{array}{|c|c|c|c|} \cline {1-4}\Large\sf {Ionic\:Compounds} & \sf \Large {Chemical\:Formula} & \Large \sf{Melting\:point_{(k)}} & \Large\sf {Boiling\:point_{(k)}} \\ &&& \\ \cline {1-4} \sf Sodium\:Chloride & \sf NaCl & 1074 & 1686 \\ &&& \\ \cline {1-4} \sf Lithium\:Chloride & \sf \sf LiCl & 887 & 1600 \\ &&& \\ \cline {1-4} \sf Calcium\:Chloride & \sf CaCl_2 & 1045 & 1900 \\ &&& \\ \cline {1-4} \sf Calcium\:Oxide & \sf CaO & 2850 & 3120 \\ &&& \\ \cline {1-4} \sf Magnesium\:Chloride & \sf MgCl_2 & 981 & 1685 \\ &&& \\ \cline {1-4} \end{array}}\)

A chemical reaction where heat is absorbed is called an endothermic reaction.

What is an endothermic reaction?

An endothermic reaction is a type of chemical reaction in which heat is absorbed from the surroundings, resulting in a decrease in temperature. This means that the energy required for the reaction to occur is supplied by the environment, and the products of the reaction have a higher energy than the reactants. Examples of endothermic reactions include the dissolving of ammonium nitrate in water and the reaction between baking soda and vinegar.

The formula for the enthalpy change, or heat of reaction (ΔH), for an endothermic reaction is: ΔH = heat absorbed by the reaction (positive value)

The enthalpy change is typically represented in units of energy per mole of reactant, such as joules per mole (J/mol) or calories per mole (cal/mol). The sign of ΔH is positive for endothermic reactions, since heat is absorbed by the reaction.

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Explanation:

B has a correct statement

(-25C / 1) 1 electron divided by 1.60x 1019 C results in 1.6 x 1020 electrons. Water has a mass of 18 g per mole. (1 / (1.6 x 1020 electrons) 1 molecular to 1 electron (6.02 x 1023 molecules/one mole) 4.8 x 103 g = (18g/mole)

It is possible for an electron, a negatively charged subatomic particle, to be either free or bonded to an atom (not bound). An electron is attached to an atom and is one of the three major types of particles in an atom.

A positively charged atom's structural constituents are called electrons. An atom's total negative charge of its electrons equals the positive charge of its protons in the atomic nucleus.

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Answer: Acid rain is caused by a chemical reaction that begins when compounds such as sulphur dioxide and oxides of nitrogen are released into the air. These substances can rise very high up into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants called acid rain.

Explanation:

go here is the answer key

http://msschmidly.weebly.com/uploads/2/6/2/0/26201624/gases_review___calculations.pdf

According to ideal gas equation, there are 271472.7 moles of gas present in a gas trapped within a 37.0 L vessel at 80.0°C at a pressure of 2.50 atm.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons .Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

Substitution of values in ideal gas equation gives,n= 2.5×37/8.314×353=271472.7 moles.

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The total heat energy required is expressed according to the formula:

where:

Qvap is the heat energy absorbed by the vapor

Qw is the heat energy absorbed by the water

Get the heat energy absorbed by the vapor at 100 degrees

Given the following parameters;

Mass of water = 100g

Molar mass of water (H2O) = 18.015g/mol

Hvap,w = 2259 J/g = 40.8 kJ/mol

Substitute the given parameters into the formula to have:

Get the heat absorbed by the water from 30 to 100 degrees and from 100 to 110 degrees using the formula below. Note that the water vapor is being heated without any phase changes, so we will be utilizing the specific heat capacity of water vapor.

Get the total heat energy required;

To calculate the ratio of uranium-235 to lead-207 atoms in the mineral sample, we can use the atomic masses and the concept of radioactive decay.

The ratio of uranium-235 to lead-207 atoms in the mineral sample is 1:3.The atomic mass of uranium-235 (U-235) is approximately 235 atomic mass units (amu), while the atomic mass of lead-207 (Pb-207) is approximately 207 amu.

Given:

Number of uranium-235 atoms = 50,000

Number of lead-207 atoms = 150,000

To find the ratio, we divide the number of uranium-235 atoms by the number of lead-207 atoms:

Ratio = Number of uranium-235 atoms / Number of lead-207 atoms

Ratio = 50,000 / 150,000

Simplifying the ratio:

Ratio = 1/3

Therefore, the ratio of uranium-235 to lead-207 atoms in the mineral sample is 1:3.

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Answer:

30 g

Explanation:

According to Mendeleev's theory, the total mass of the reactants and products are the same.

A dark ale that is sweet, strong, and hosts a malt flavor is known as a(n) b. stout.

Ale is a type of beer that is brewed using a warm fermentation method, typically at temperatures between 15-25°C (59-77°F). It is made with a type of yeast called Saccharomyces cerevisiae, which ferments at the top of the fermentation vessel and gives ale its characteristic fruity and floral notes.

Ales can range in color from light yellow to dark brown, and in flavor from light and refreshing to rich and complex. Some popular types of ales include pale ale, India pale ale (IPA), brown ale, and porter.

Ales are often served at cellar temperature (around 12-14°C or 54-57°F) and can be enjoyed on their own or paired with a variety of foods, such as cheese, grilled meats, and spicy dishes.

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6.9 cause argon is a proactive system that can be sick

Answer:

rahul's weight

Explanation:

internet

The force is equal to the force Rahul exerts on Earth is Rahul's weight.

Force is that thing which cause a change in the motion of an object

So, Rahul exerts a force on the Earth equal to his weight.

Thus, the force is equal to the force Rahul exerts on Earth is Rahul's weight.

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0.0989 grams of KOH is needed to neutralize 12.6 mL of 0.14 M HCl in stomach acid.

Volume of HCl solution = 12.6 mL = 0.0126 L

The concentration of HCl solution = 0.14 M We have to find the amount of KOH required to neutralize the given volume and concentration of HCl.

In order to calculate the amount of KOH, we need to first calculate the number of moles of HCl using the formula of Molarity;

Molarity = (Number of moles of solute) / (Volume of solution in liters)0.14 M = n(HCl) / 0.0126L0.14 × 0.0126 = n(HCl)n(HCl) = 0.001764 moles of HCl

Now, the balanced chemical equation for the reaction of KOH with HCl is;KOH + HCl → KCl + H₂OOne mole of KOH reacts with one mole of HCl.

Therefore, the number of moles of KOH required to neutralize the given amount of HCl would be equal to 0.001764 moles. Now, let's calculate the amount of KOH in grams.

Molar mass of KOH = 39.1 + 16.00 + 1.008 = 56.108 g/mol0.001764 moles of KOH would weigh = 0.001764 × 56.108 = 0.0989

hence, the amount of KOH required to neutralize the given volume and concentration of HCl would be 0.0989 grams.

Thus, 0.0989 grams of KOH is needed to neutralize 12.6 mL of 0.14 M HCl in stomach acid.

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The maximum possible efficiency for such an engine is 6.039 %.

Temperature of water near the surface of a tropical ocean = 298.2 K

Temperature of water 700 m beneath the surface = 280.2 K

To find the maximum possible efficiency for the given heat engine,

The maximum possible efficiency of a heat engine depends only on the temperatures of the hot and cold reservoirs, and is given by Carnot efficiency,  η = (T₁ - T₂)/T₁

whereT₁ is the temperature of hot reservoir, T₂ is the temperature of cold reservoir. Temperature is given in Kelvin.

The temperature difference between the hot and cold reservoirs is, T₁ - T₂ = 298.2 K - 280.2 K = 18 K

Substitute these values in the Carnot efficiency equation,

Carnot efficiency, η = (T₁ - T₂)/T₁ = (18 K)/298.2 K = 0.06039. The maximum possible efficiency for such an engine is 6.039 %.

Generalised function is given as η = (T₁ - T₂)/T₁

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Answer:

Option D

Explanation:

As we know at

PV = nRT

at STP,

Pressure is  1 atm and temperature is 273 K

\(\frac{P_2}{P_1} = \frac{T_2}{T_1} \\P_2 = 1*(428 )/273\\P_2 = 1.567\)

Hence, option D is correct

Answer: d

Explanation:

To solve this question we need to know the concept behind half life. Decay of radioactive element always comes under first order kinetics. Three half-lives have passed since the rock formed.

Half life tells about the time at which the radioactive material decays to half of its initial concentration.

Mathematically the the total number of half life can be calculated as

\(\rm \frac{t}{t_{1/2}} =-\frac{ln\frac{N_{t}}{N_{0}} }{ln 2}\)

Nt= amount of the isotope that has not yet decayed after a time t

N₀= initial amount of the isotope

t=the time

\(t_{1/2}\) = the half-life

Substituting the given values in the above equation

\(\rm \frac{t}{t_{1/2}} =-\frac{ln\frac{125}{100} }{ln 2}\)

Solving this we get

3\(t_[1/2}\)= t

Therefore, three half-lives have passed since the rock formed.

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An insect needs mud wallows to breed; that insect pollinates several flowers in that ecosystem.

Having mud in an ecosystem is important because Insects are very important as primary or secondary decomposers in the ecosystem. These insects need mud wallows to breed. That insect pollinates several flowers in that ecosystem.

Therefore, the mud in an ecosystem is most important as it provides a place for insects to breed and these insects play a major role in the ecosystem like pollination.

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Answer:

Bent

Explanation:

pls brainlist

Answer:

Maria

Explanation:

Answer:

Maria loves Jarren more is the answer.

Answer:

Explanation:

If you would like to solve 1/(x + 3) = (x + 10)/(x - 2), you can do this using the following steps:

1/(x + 3) = (x + 10)/(x - 2)

1 * (x - 2) = (x + 10) * (x + 3)

x - 2 = x^2 + 3x + 10x + 30

0 = x^2 + 13x + 30 - x + 2

0 =  x^2 + 12x + 32

0 = (x + 8) * (x + 4)

1. x = -8

2. x = -4

The automobile gasoline tank will hold 59.05 pounds of gasoline.

Given that the volume of the gasoline tank of the automobile is 19.0 gal. and the density of the gasoline is 0.737 g/mL. So, we need to calculate the number of pounds of gasoline the tank can hold.The relationship between volume and density is as follows;Density= Mass/ VolumeRearranging the equation gives; Mass= Density × VolumeSubstitute the given values in the above equation;Mass = 0.737 g/mL × 19.0 gal × 3.78541 L/galWe know that; 1 L = 1 dm³Thus,Mass = 0.737 g/mL × 19.0 gal × 3.78541 dm³/LMass = 53.70 kgThe given mass is in kg and we need to convert it into pounds;1 kg = 2.20462 poundsThus,Mass = 53.70 kg × 2.20462 pounds/kgMass = 118.4 pounds therefore, the automobile gasoline tank will hold 59.05 pounds of gasoline.

Given that the volume of the gasoline tank of the automobile is 19.0 gal. and the density of the gasoline is 0.737 g/mL. So, we need to calculate the number of pounds of gasoline the tank can hold.The relationship between volume and density is as follows;Density= Mass/ VolumeThe above equation can be rearranged as; Mass= Density × Volume Substitute the given values in the above equation;Mass = 0.737 g/mL × 19.0 gal × 3.78541 L/galMass = 53.70 kgThe given mass is in kg and we need to convert it into pounds;1 kg = 2.20462 poundsThus,Mass = 53.70 kg × 2.20462 pounds/kgMass = 118.4 pounds therefore, the automobile gasoline tank will hold 59.05 pounds of gasoline.

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Answer:

the atomic number of magnesium is 12 the atoms that cause reactions are 2 the rest are the research on them later today

Metals are often used for making wire due to their high electrical conductivity, which allows for efficient transmission of electricity.

Additionally, metals possess desirable properties such as malleability, ductility, and strength that make them useful for wire production.Metals' high electrical conductivity is a result of their free-moving electrons.

These delocalized electrons can easily flow through the metal's structure, enabling the efficient transfer of electrical current along the wire. This property makes metals an ideal choice for conducting electricity over long distances, such as in electrical power transmission.

Furthermore, metals exhibit excellent malleability, which means they can be easily shaped and deformed without breaking. This property is crucial in the wire-making process, as it allows metals to be drawn into thin, elongated wires through a process called wire drawing.

Moreover, metals are known for their strength and durability. This property ensures that the wire can withstand mechanical stresses, such as tension or bending, without easily breaking or deforming. The combination of strength and ductility in metals makes them reliable and long-lasting for wire applications.

In summary, metals' high electrical conductivity, malleability, ductility, strength, and durability make them an excellent choice for wire production.

These properties enable efficient transmission of electricity, ease of shaping into wires, and the ability to withstand mechanical stresses, ensuring the effectiveness and longevity of metal wires in various industries.

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