How many miles of C5H12 are there in 362.8 grams of the compound?

Answer:

The pressure of the solution is 144 torr

Explanation:

Step 1: Data given

Number of moles of a nonvolatile solute = 0.5 moles

Mass of ethanol = 300 grams

Molar mass of ethanol = 46.07 g/mol

Temperature = 40°C

The vapor pressure of ethanol = 134 torr

Step 2: Calculate moles ethanol

Moles ethanol = mass ethanol / molar mass ethanol

Moles ethanol = 300 grams / 46.07 g/mol

Moles ethanol = 6.51 moles

Step 3: Calculate the total moles

Total moles = 0.5 moles + 6.51 moles

Total moles = 7.01 moles

Step 4: Calculate mol fraction

Mol fraction = moles / total moles

Mol fraction ethanol = 6.51 / 7.01 moles

Mol fraction ethanol = 0.93

Mol fraction nonvolatile solute

0.5 moles / 7.01 moles = 0.07

Step 5: Calculate Total pressure of the solution

Vapor pressure ethanol = mol fraction * total pressure solution

134 torr = 0.93 * total pressure solution

Total pressure solution = 134 torr/ 0.93

Total pressure solution = 144 torr

The pressure of the solution is 144 torr

Answer:

your answer is either c or d but probably c

Answer : The molarity of a solution is, 0.0337 M

Explanation : Given,

Mass of [tex]MgI_2[/tex] = 468 mg  = 0.468 g   (1 mg = 0.001 g)

Volume of solution = 50.0 mL

Molar mass of [tex]MgI_2[/tex] = 278 g/mole

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

[tex]\text{Molarity}=\frac{\text{Mass of }MgI_2\times 1000}{\text{Molar mass of }MgI_2\times \text{Volume of solution (in mL)}}[/tex]

Now put all the given values in this formula, we get:

[tex]\text{Molarity}=\frac{0.468g\times 1000}{278g/mole\times 50.0mL}=0.0337mole/L=0.0337M[/tex]

Therefore, the molarity of a solution is, 0.0337 M

The molarity of the solution formed is 0.0337 M

From the question,

We are to determine the molarity of the solution formed.

First, we will determine the number of moles MgI₂ dissolved

Mass of MgI₂ dissolved = 468 mg = 0.468 g

From the formula

[tex]Number\ of\ moles = \frac{Mass}{Molar\ mass}[/tex]

Molar mass of MgI₂ = 278.1139 g/mol

∴ Number of moles of MgI₂ present = [tex]\frac{0.468}{278.1139}[/tex]

Number of moles of MgI₂ present = 0.001682764 mole

Now,

For the molarity of the solution formed,

Using the formula

[tex]Molarity = \frac{Number\ of\ moles}{Volume}[/tex]

Volume of the solution = 50.0 mL = 0.050 L

∴ Molarity of the solution = [tex]\frac{0.001682764}{0.050}[/tex]

Molarity of the solution = 0.033655

Molarity of the solution ≅ 0.0337 M

Hence, the molarity of the solution formed is 0.0337 M

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Answer:

D All of these

Explanation:

hope this helped

Answer:

17.08 moles of manganese dioxide

Explanation:

From the balanced reaction equation;

Zn + 2 MnO2 + 1 H2O → Zn(OH)2 + Mn2O3 (notice that I did not put 1 as a stoichiometric coefficient. It is expected that any specie written without a coefficient should have a coefficient of 1)

It is clear from the reaction equation that 2 moles of manganese dioxide produced 1 mole of zinc II hydroxide

Hence x moles of manganese dioxide will produce 8.54 moles of zinc II hydroxide

x= 2× 8.54/1

x= 17.08 moles of manganese dioxide

Answer:

A white light is apparently colourless light, for example ordinary daylight. It contains all the wavelengths of the visible spectrum at equal intensity.

Answer:

White Light is a light having a mixture of frequencies, being perceived as having no specific colour; such as sunlight.

Explanation:

Answer:

12 moles Pb(NO₄)₂ needed.

Explanation:

                3Pb(NO₃)₂ +2AlCl₃     => 3PbCl₂ + 2Al(NO₃)₃

Given =>   ? moles      8 moles

from reaction stoichiometry, 2 moles AlCl₃ requires 3 moles Pb(NO₄)₂ then 8 moles AlCl₃ requires 3/2(8) moles of the Pb(NO₄)₂ => 12 moles Pb(NO₄)₂ needed.

Answer: Sunlight.

Explanation:

Photochemical smog is formed when primary pollutants such nitrogen oxides and volatile organic compound (VOC) react with sunlight, forming a brown haze above cities.

Photochemical smog can only occur during the day.

Photochemical smog is formed when primary pollutants such as nitrogen oxides and volatile organic compounds interact with sunlight. The reaction between these pollutants in the presence of sunlight leads to the formation of smog.

Photochemical smog is formed when primary pollutants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs) interact with sunlight. These primary pollutants, which can come from sources like vehicle emissions and industrial processes, undergo chemical reactions in the presence of sunlight to produce secondary pollutants, including ozone. The reaction between NOx and VOCs in the presence of sunlight leads to the formation of photochemical smog, which appears as a brown haze above cities.

The equilibrium constant for the decomposition of water is approximately 1.01 × 10^-13.

The equilibrium constant (Kc) for the decomposition of water can be calculated using the equation: Kc = [H2]2[O2]/[H2O]2.

Given that ΔG°f(H2O(l)) = -237.2 kJ/mol, we can use the equation ΔG° = -RTlnK to find the equilibrium constant. R is the ideal gas constant (8.314 J/(mol·K)) and T is the temperature in Kelvin (25 °C + 273.15 = 298.15 K). Plugging in the values, we can solve for K.

ΔG° = -RTlnK

-237.2 kJ/mol = -(8.314 J/(mol·K) × 298.15 K) × lnK

lnK = -237.2 kJ/mol ÷ (8.314 J/(mol·K) × 298.15 K)

lnK ≈ -29.155

K ≈ e-29.155

K ≈ 1.01 × 10-13

Therefore, the equilibrium constant for the decomposition of water at 25 °C is approximately 1.01 × 10-13.

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Final answer:

Nuclear fusion is a reaction in which two nuclei combine to form a larger nucleus, releasing energy. It is the process that powers the sun and stars.

Explanation:

Nuclear fusion is a reaction in which two nuclei are combined to form a larger nucleus, releasing energy. It is the process that powers the sun and other stars. In the sun, hydrogen nuclei combine to form helium, releasing a significant amount of energy.

Answer:

There are 40 electrons in one atom of Zirconium.

Explanation:

Note: The word is not zicronium, it is Zirconium.

Answer:

Name Zirconium

Atomic Mass 91.224 atomic mass units

Number of Protons 40

Number of Neutrons 51

Number of Electrons 40

Explanation:

Answer: Mrs. Salge can make 6 ice cream cones

Explanation:

Mrs. Salge's recipe:

1 cone

1 scoop blue ice cream

2 scoops red ice cream

1 cherry

Now we will find what the limiting ingredient is:

We know she has:

10 cones.    →    10 ice cream cones

12 scoops blue ice cream.    →    12 ice cream cones

12 scoops red ice cream.    →    6 ice cream cones

10 cherries.    →    10 ice cream cones

The red ice cream is the limiting factor. Mrs. Salge can make 6 ice cream cones.

Mrs. Salge can make a total of 6 ice cream cones with her available ingredients, as the red ice cream scoops are the limiting factor.

To determine how many ice cream cones Mrs. Salge can make given her resources, we must find out which ingredient limits the number of cones she can make. Her recipe requires one cone, one scoop of blue ice cream, two scoops of red ice cream, and one cherry for each ice cream cone. Therefore, we will check each ingredient to see which will run out first if she keeps making the ice cream cones as per the recipe.

Since each cone requires 2 scoops of red ice cream, the number of cones she can make will be limited by the red ice cream. With 12 scoops of red ice cream, she can make 6 cones because each cone requires 2 scoops. This is the limiting factor because even though she has 10 cones and 10 cherries, after making 6 cones, she will run out of red ice cream.

Therefore, Mrs. Salge can make a total of 6 ice cream cones with the ingredients available to her before one of the ingredients runs out and prevents her from making more.

Answer:

the femur

Explanation:

a vestigial structure is useless, and a femur bone is not uselsess

Answer:

Pelvic bone of a snake

Explanation:

Answer:

2

Explanation:

well since the question has given you the concentration of the solution 0.2mol/L and the wanted amount (moles) of naoh(0.4mol) you are able put this into the formula n=cV; where n is the moles of naoh the solution, c is the concentraton of the solution and V is the volume of the solution in litres.

therefore the for the solution to have 0.4 moles of naoh you put it into the formula, giving you:

0.4 = 0.2V

V = 2

V = 2 litres

Final answer:

To obtain 0.4 moles of NaOH from a 0.2 M NaOH solution, you would need to measure out 2 liters of the solution.

Explanation:

To calculate the volume of a 0.2 M NaOH solution needed to have 0.4 moles of NaOH, we can use the molarity equation, which is:

Molarity (M) = Moles of solute / Volume of solution in liters (L)

We can rearrange this equation to solve for the volume:

Volume of solution (L) = Moles of solute / Molarity (M)

Substituting the given values:

Volume of solution (L) = 0.4 moles NaOH / 0.2 M NaOH

Volume of solution (L) = 2 liters

Therefore, you would need 2 liters of a 0.2 M NaOH solution to have 0.4 moles of NaOH.

Answer:

The answer to your question is  V2 = 2.5 l

Explanation:

Data

Volume 1 = V1 = 3 l

Temperature 1 = T1 = 78°C

Volume 2 = V2 = ?

Temperature 2 = T2 = 20°C    Standard temperature = 20°C

Process

To solve this problem use Charles' law

            V1/T1 = V2/T2

-Solve for V2

            V2 = V1T2 / T1

1.- Convert the temperature to °K

T1 = 78 + 273 = 352°K

T2 = 20 + 273 = 293°K

2.- Substitution

           V2 = (3 x 293) / 352

3.- Simplification

           V2 = 879/352

4.- Result

           V2 = 2.5 l

The critical concentration is key in determining whether actin monomers will form filaments or disassemble. Above this concentration, polymerization of actin occurs, while below it, monomers dissociate. A steady state is reached at the critical concentration, essential for cell motility and structure.

The critical concentration is the threshold at which actin filaments will either form or dissociate. In the presence of actin monomers above this concentration, the actin will polymerize into filaments; below it, the filaments will disassemble into monomers. At the critical concentration, there is a dynamic state where the rates of polymerization and depolymerization are equal, leading to a steady state in the reaction containing F-actin (filamentous actin).

Actin dynamics are essential for various cellular functions, including muscle contraction and cell motility. The polymerization and depolymerization processes are regulated by ATP-binding and hydrolysis, with critical concentration playing a crucial role in achieving a steady state of F-actin within cells. This balance affects the cell's ability to exert forces on itself and its environment, a key aspect of cellular motility and structure.

To determine the Ksp of Ag2CrO4 at 25 °C, you would first need to determine the standard reduction potentials and use the free energy equation ∆G° = -nFE°. Next, use the relationship between the equilibrium constant and ∆G° given by ∆G° = -RT ln Ksp to find the Ksp. However, without the necessary information, a precise value cannot be given.

To find the solubility product constant (Ksp) of Ag2CrO4 at 25 °C given the provided standard reduction potentials, we would need to look at the relationship between the equilibrium constant, K, and ∆G° (standard free energy). The equation ∆G° = -RT ln K is used in these cases, where R is the gas constant, T is the temperature in Kelvin, and K is the equilibrium constant that we're interested in. Note that in order to use this equation, we first need to calculate ∆G° using the given reduction potentials and the equation ∆G° = -nFE°, where n is the number of electrons transferred, F is Faraday's constant, and E° is the standard reduction potential.

For example, if the ∆G° for the reaction came out to be around 167.9 kJ as per the details provided, and we can use ∆G° = -RT ln Ksp to find the Ksp. However, without the complete standard reduction potentials, a precise Ksp value for Ag2CrO4 at 25 °C cannot be provided here.

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Answer:

IPM is also known as Integrated Pest management.

IPM is an ecosystem-based strategy that deals with long-term prevention of pests or their damage through a combination of techniques such as biological control, habitat manipulation, modification of cultural practices, and use of resistant varieties.

These factors are very important in protecting the environment and it prevents some crops and animals from going into extinction.

The process of IPM involves prevention, monitoring and intervening as an environmental solution.

IPM stands for 'Integrated Pest management', it is an  ecosystem-based strategy.

IPM works on three main aspects and that are:

Hence, the process of IPM raised out as an environmental solution.

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Answer:

False

Explanation:

Genes are found inside chromosomes and chromosomes are in cells. So technically genes are in cells

Answer:

Solute is Lithium nitrate, and solvent is water.

Explanation:

Lithium nitrate is trigonal crystal which is soluble in water.

Answer:

The new temperature of the gas is 200  Celsius degrees.

Explanation:

Charles's Law consists of the relationship between the volume and temperature of a certain amount of ideal gas, which is maintained at a constant pressure, by means of a proportionality constant that is applied directly.

In this way, Charles's law is a law that says that the quotient that exists between volume and temperature will always have the same value:

[tex]\frac{V}{T} =k[/tex]

Assuming you have a certain volume of gas V1 that is at a temperature T1 at the beginning of the experiment, if you vary the volume of gas to a new value V2, then the temperature will change to T2, and it will hold:

[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]

In this case:

Replacing:

[tex]\frac{20}{100} =\frac{40}{T2}[/tex]

Solving:

[tex]T2=\frac{40}{\frac{20}{100} }[/tex]

T2=200 °C

The new temperature of the gas is 200  Celsius degrees.

Answer:

473°C

Explanation:

We'll begin by analysing what was given from the question. This is illustrated below:

Initial temperature (T1) = 100°C

Initial volume (V1) = 20 L

Final volume (V2) = 40 L

Final temperature (T2) =?

Next, we shall be converting the temperature in celsius to Kelvin temperature. This is illustrated below:

Temperature (Kelvin) = temperature (celsius) + 273

Initial temperature (T1) = 100°C = 100°C + 273 = 373K

Next, we shall obtain the new temperature by applying the Charles' law equation. This is illustrated below:

V1/T1 = V2/T2

20/373 = 40/T2

Cross multiply to express in linear form

20 x T2 = 373 x 40

Divide both side by 20

T2 = (373 x 40) /20

T2 = 746K

Next, we shall be converting the new temperature obtained from Kelvin to celsius temperature. This is illustrated below:

Temperature (celsius) = Temperature (Kelvin) - 273

Temperature (celsius) = 746K - 273

Temperature (celsius) = 473°C

Answer:

D is the answer

Explanation:

I'm pretty sure a molecular compound doesn't form between 2 non metals

...I think, but I can't remember

The incorrect statement is that in an ionic compound, a metal and a polyatomic ion form a compound, and electrons are shared. In ionic compounds, electrons are transferred, not shared, resulting in the formation of cations and anions.

The statement that is NOT correct is: b) In an ionic compound, a metal and a polyatomic ion form a compound, and electrons are shared. This statement is incorrect because in an ionic compound, electrons are not shared but are transferred from the metal to the non-metal or to the polyatomic ion, forming cations and anions.

In ionic compounds, metals lose valence electrons to form positively charged ions, while nonmetals gain those electrons to form negatively charged ions, both achieving a full outer shell as per the octet rule. Covalent compounds, on the other hand, form when non-metals share electrons, producing molecular compounds.

Therefore, the correct statements are:

a) In an ionic compound, a metal and a non-metal form a compound, and electrons are transferred from one to the other.

c) In both ionic and molecular compounds, valence electrons take part in bonding.

d) In a molecular compound, a non-metal and a non-metal form a compound, and electrons are shared.

Answer:

Concentration of the resulting solution = 2.04 M

Explanation:

Data:

M1 = 5.10 M

V1 = 200.0 mL

V2 = 500.0 mL

M2 = ?

By modifying the volume of solution, keeping the amount of solute constant, the concentration changes. To perform the calculations, the equation will be:

[tex]M1*V1=M2*V2[/tex]

Where M1 is the initial concentration of the solution, M2 the final concentration and V is the value of the volumes of the initial and final solution.

Clearing the value of M2 from the equation and replacing the values ​​we have:

[tex]M2=\frac{M1*V1}{V2} =\frac{5.10M*200mL}{500mL} =2.04M[/tex]

Answer:

2.04M

Explanation:

Using C1V1 = C2V2

where;

C1 =  Concentration of stock solution  = 5.10M

C2 = Final concentration of new solution = x

V1 = Volume of stock solution = 200ml

V2 = Final volume of new solution = 500ml

Inserting the values into the formulae, we have;

5.10 * 200 = x * 500

x = (5.10 * 200) / 500

x = 2.04M

The compound MnCL2 called

Manganese cloride

Answer:

Explanation:

Cloruro de manganeso

Answer:

0.01144L or 1.144x10^-2L

Explanation:

Data obtained from the question include:

V1 (initial volume) = 20.352 mL

P1 (initial pressure) = 680mmHg

P2 (final pressure) = 1210mmHg

V2 (final volume) =.?

Using the Boyle's law equation P1V1 = P2V2, the volume of the container can be obtained as follow:

P1V1 = P2V2

680 x 20.352 = 1210 x V2

Divide both side by 1210

V2 = (680 x 20.352)/1210

V2 = 11.44mL

Now we need to convert 11.44mL to L in order to obtain the desired result. This is illustrated below:

1000mL = 1 L

11.44mL = 11.44/1000 = 0.01144L

Therefore the volume of the container is 0.01144L or 1.144x10^-2L

Answer:

0.011437L

Explanation:

In the question, we are told that under a pressure of 680mmHg, chlorine gas occupies a volume of 20.352mL and then the pressure is changed to 1210mmHg at constant temperature.

Boyle's law states that the volume of a fixed mass of gas is directly proportional to the pressure of the gas at constant temperature.

Mathematically;

P1V1=P2V2

P1= initial pressure

V1= initial volume

P2= final pressure

V2= final volume

We will apply Boyle's law to get the new volume.

From, the relationship P1V1=P2V2

We make V2 subject of formula

V2= (P1V1)/P2

Given;

P1=680mmHg

V1=20.352mL= 20.352/1000L= 0.020352L

P2=1210mmHg

V2=(680×0.020352)/1210

V2=0.011437L

Answer:

D

Explanation:

well, just need to remember

Answer:

Catalyst decreases activation energy

Explanation:

Consider the attached diagram and note the annotation => top of transition diagram for catalyzed reaction is lower than uncatalyzed reaction.

Answer:hope we can be friends

can i please get brainliest

Although phlorizin inhibition of Na+-glucose cotransport occurs within a few seconds, 3H-phlorizin binding to the sodium-coupled glucose transport protein(s) requires several minutes to reach equilibrium (the fast-acting slow-binding paradigm). Using kinetic models of arbitrary dimension that can be reduced to a two-state diagram according to Cha’s formalism, we show that three basic mechanisms of inhibitor binding can be identified whereby the inhibitor binding step either (A) represents, (B) precedes, or (C) follows the rate-limiting step in a binding reaction. We demonstrate that each of mechanisms A–C is associated with a set of unique kinetic properties, and that the time scale over which one may expect to observe mechanism C is conditioned by the turnover number of the catalytic cycle. In contrast, mechanisms A and B may be relevant to either fast-acting or slow-binding inhibitors.

Explanation:

Answer:

An Omnivore

Explanation: An omnivore is a kind of animal that eats either other animals or plants. Some omnivores will hunt and eat their food, like carnivores, eating herbivores and other omnivores. Some others are scavengers and will eat dead matter. Many will eat eggs from other animals.

Omnivores eat plants, but not all kinds of plants. Unlike herbivores, omnivores can't digest some of the substances in grains or other plants that do not produce fruit. They can eat fruits and vegetables, though. Some of the insect omnivores in this simulation are pollinators, which are very important to the life cycle of some kinds of plants.

Answer:

I know this is old but im just trying to get some points

Explanation:

The answer is an omnivore

Answer: (Hydroelectric plant) gravity pushes water down pipes or canals at high pressure which forces the turbine to turn and generate electricity. In wind power (wind turbines), wind spins the turbine blades, which in turn, spins the magnet.

Explanation:

Final answer:

Wind turbines and hydroelectric plants both convert kinetic energy into electrical energy using turbines and generators. The energy source for wind turbines is moving air, whereas for hydroelectric plants it's the potential energy of water. They differ in the method of capturing and converting this energy into mechanical motion.

Explanation:

The way that a wind turbine works is similar to the way that a hydroelectric plant works in that both convert kinetic energy into electrical energy using turbines and generators. In a hydroelectric plant, water flows from a reservoir, gains kinetic energy, hits the turbine blades, and turns a shaft connected to a generator. The movement of the water thus generates electricity. Similarly, a wind turbine captures kinetic energy from the movement of air. Wind causes the rotor blades to lift and rotate, which turns a shaft also connected to a generator, producing electricity.

However, there are key differences between these two systems. The source of kinetic energy for hydroelectric plants is the potential energy of water due to gravity, while wind turbines rely on the kinetic energy of moving air, driven by solar energy and temperature differences. The methods used to convert this energy into mechanical motion of the turbines also vary, with the wind pushing against turbine blades directly and water being channeled through turbines in a more controlled environment.

In summary, both wind turbines and hydroelectric plants utilize turbines and generators to produce electricity, but the source of their energy and the specifics of their operation differ significantly.