when aqueous solutions of iron(iii) sulfate and potassium phosphate are combined, solid iron(iii) phosphate and a solution of potassium sulfate are formed. the net ionic equation for this reaction is:

Answer:

1 molecule of glucose contains 6 atoms

Explanation:

Answer:

there are 6 atoms :)) I think so

Answer:

1) A

2) D

3) A

4) B

5) D

6) C

7) B

8) A

9) C

10) C

Explanation:

Sublimation refers to the direct change of a substance from solid to gas without passing through a liquid stage. Hence if camphor changes directly from solid to gas, camphor is a sublime substance.

Gases have a higher rate of diffusion than liquids because liquids have greater intermolecular forces while the intermolecular forces in a gas is negligible.

When a substance is heated, a point comes in which heat is supplied but the temperature of the body does not change. This is the point of phase change and the heat supplied at this point may be referred to as latent heat of fusion or vaporization depending on the particular process going on.

While it is true that evaporation occurs at all temperatures and the kinetic energy of molecules is directly proportional to the temperature of a body but the later statement does not explain the former. Rather evaporation occurs because some particles at the surface of the liquid are more energetic and escape due to unbalanced attractive forces acting on them.

Due to decrease in temperature, it takes a longer time to cook food at high altitudes but a lesser time to boil water at higher altitudes.

Gases are easily compressible by applying pressure because gases occupy negligible volume compared to the volume of the container. There is a significant inter particle space between gas particles.

The solid state contains the strongest degree of intermolecular forces. However, the reason offered, though correct, is not the correct explanation of the assertion stated.

This is the Tyndall effect. Colloidal particles scatter light rays and the path of the light becomes visible in the colloidal solution.

Salt solution is homogeneous. A homogeneous solution contains only one phase throughout. If it has a different composition, the solution is heterogeneous. Hence the explanation is false.

A true solution will not exhibit Tyndall effect because the particles are less than colloidal size. A true solution cannot be a heterogenous mixture hence the reason is false.

Backbone  provide support to the body. It provides strength to the body.Spinal cord is enclosed by backbone.

The spinal cord is  defined as a long, tube-like band of tissue. It connects brain to lower back.  Spinal cord carries nerve signals from  brain to body and vice versa. These nerve signals help feel sensations and move   the body.

Spinal cord’s main purpose is to conduct nerve signals throughout body. These nerve messages have three main functions. They are as follows:

Control body movements and functions.Report senses to brain. Signals from other parts of  body help brain record and process sensations like pressure or pain.

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Answer:

78.04g of 0.448 moles must be added

Explanation:

Using H-H equation we can find the pH of the buffer:

pH = pKa + log [A⁻] / [HA]

Where pH is the pH of the buffer = 7.2

pKa = 7.1

[A⁻] = [K₂HPO₄]

[HA] = [KH₂PO₄]

Replacing:

7.2 = 7.1 + log [K₂HPO₄] / [KH₂PO₄]

0.1 = log [K₂HPO₄] / [KH₂PO₄]

1.2589 = [K₂HPO₄] / [KH₂PO₄] (1)

And as the  concentration of the buffer is:

1M = [K₂HPO₄] + [KH₂PO₄] (2)

Replacing (2) in (1):

1.2589 = 1M - [KH₂PO₄] / [KH₂PO₄]

1.2589 [KH₂PO₄] = 1M - [KH₂PO₄]

2.2589 [KH₂PO₄] = 1M

[KH₂PO₄] = 0.44M

And [K₂HPO₄] = 0.56M

In 800mL = 0.8L:

0.8L * (0.56mol / L) = 0.448 moles K₂HPO₄. The mass is -Molar mass K₂HPO₄: 174.2g/mol-:

0.448 moles * (174.2g / mol) =

Answer:

Quito is the one..

The volume of 12.0 M HCl required to make 75.0 mL of 3.50 M HCl is 21.9 mL. Option 1 is correct.

To calculate the volume of 12.0 M HCl required to make 75.0 mL of 3.50 M HCl, we can use the formula:

where M1 and V1 are the initial concentration and volume of the HCl solution, and M2 and V2 are the final concentration and volume of the HCl solution.

Rearranging this formula to solve for V1, we get:

Substituting the values given in the problem, we get:

Therefore, the volume of 12.0 M HCl required to make 75.0 mL of 3.50 M HCl is 21.9 mL. Hence Option 1 is correct.

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Answer:

B. Wall applies equal reaction force on hand

Explanation:

This is newton's third law. You push something, that something pushes you back with same force. The direction is opposite, so if I push a wall, the wall pushes me back with same force just in opposite direction (so wall towards me). This is why option A is incorrect b/c it says force in same direction as wall. C and D talk about unequal force which is incorrect.

Answer:Wall applies equal reaction force on hand

Explanation:

The relationship between the amount of remaining radioactive nuclei and time is an exponential function. Hence, the answer is the exponential decay model.

The graph to illustrate the relationship between the independent and dependent quantities, time and amount of nuclei remaining, respectively, is shown below:

In this graph, the independent quantity is time, in billions of years, and the dependent quantity is the number of remaining nuclei. As the time increases, the number of nuclei decreases. From the graph, it can be observed that the decay of the Uranium-238 follows an exponential decay model, where the half-life of the sample is approximately 5 billion years.

Explanation:

In the given sample of Uranium-238, it is stated that the half-life of Uranium-238 is approximately 5 billion years. This means that after every 5 billion years, the number of radioactive nuclei reduces to half the number of nuclei that existed initially. At the start of the decay process, the sample had 1000 radioactive nuclei. After 5 billion years, only 500 nuclei exist (half of the initial 1000).After another 5 billion years (i.e., 10 billion years from the start of decay), the number of nuclei reduces to half the existing nuclei, i.e., only 250 nuclei exist. Again, after another 5 billion years (i.e., 15 billion years from the start of decay), the number of nuclei reduces to half of the previous existing nuclei, i.e., only 125 nuclei exist.From the given data, it is evident that the decay process of the given sample of Uranium-238 follows an exponential decay model. In this model, the rate of decay of the radioactive nuclei is proportional to the number of radioactive nuclei present at that particular time. Thus, the relationship between the amount of remaining radioactive nuclei and time is an exponential function. Hence, the answer is the exponential decay model.

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Answer:

Water

Explanation:

hydrogen + oxygen = water

Answer:

Table D

Explanation:

First, remember the definitions of groups, periods, and valence electrons.

Groups are columns. On the periodic table they go from 1 to 18

Periods are rows. On the periodic table they range from 1 to 7

Valence electrons are electrons in the outermost shell of the atom in question. To determine the number of valence electrons, count which column (group) an atom is in from left to right. When counting which column an atom is in, do not count the transition metals (group 3-12) because these elements have variable valence electrons which do not follow this rule.

For example, since Ca is in group 2 (the second column from the left) this atom has two valence electrons.

Similarly, P has a valence electron number of 5 because we count from left to right: 1, 2, SKIP THE TRANSITION METALS (MIDDLE BLOCK), 3, 4, 5

Option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

The long-run equilibrium condition for perfect competition is that price (P) is equal to average total cost (ATC), which is also equal to marginal cost (MC), and marginal revenue (MR).

Option (d), P=ATC=MR=MC, best represents the long-run equilibrium condition for perfect competition. In perfect competition, firms operate at the minimum point of their average total cost curve, where price equals both average total cost and marginal cost. This condition ensures that firms are earning zero economic profit and are producing at an efficient level.

In the long run, if firms are earning economic profit, new firms will enter the market, increasing competition and driving prices down. Conversely, if firms are experiencing losses, some firms may exit the market, reducing competition and causing prices to rise. This process continues until firms reach a state where price equals average total cost, marginal cost, and marginal revenue, ensuring a long-run equilibrium.

Therefore, option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

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Te, S, and c are the following sets of elements, and they will all produce ions with a charge of two (option b).

An essential element of a totality. In chemistry, a simple substance is one that cannot be divided into smaller components or transformed into another substance. An element's fundamental building block is an atom, which is made up of protons, neutrons, & electrons. The number of atoms in an element's protons is continuous.

Earth, Water, Wind, Fire, Ice, Thunder, Time, Flower, Shadow, Light, and Moon are the twelve natural elements. These simplified terminology for more advanced and complicated compounds refer to each of these elements.

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\(\\ \tt\longmapsto Density=\dfrac{Mass}{Volume}\)

\(\\ \tt\longmapsto Density=\dfrac{1055}{93.4}\)

\(\\ \tt\longmapsto Density=11.29g/cm^3\)

The measure of how densely a material is packed together is called density. As the mass per unit volume, it has that definition. The density of a chunk of lead that has a mass of 1055 grams is  11.29 g/cm³.

The density of a substance indicates how dense it is in a given area. Mass per unit volume is the definition of a material's density. In essence, density is a measurement of how closely stuff is packed. It is a particular physical characteristic of a specific thing.

The expression used to calculate density is:

Density = Mass / Volume

mass = 1055 g

volume = 93.4 cm³

Density = 1055 / 93.4

Density = 11.29 g/cm³

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Answer:

Explanation:

In a longitudinal wave, particles of the medium move back and forth in the same direction as the wave. Wave amplitude of a longitudinal wave is the distance between particles of the medium where it is compressed by the wave. The closer together the particles are, the greater the amplitude of the wave.

Answer: The particles in a longitudinal wave rotate in the same direction as the amplitude increases.

Explanation: A longitudinal wave's amplitude is the distance between particles in the medium compressed by the wave. The greater the amplitude of the wave, the closer the particles are together.

The pH of the solution will be 10.47.

The pH of a solution is mathematically given as:

 pH = - log [\(H^+\)] of -log [\(H_3O^+\)]

Thus, in this case, with  [\(H_3O^+\)]  of 3.4 x 10-¹¹ M:

pH = -log 3.4 x \(10^-^1^1\) = 10.47

Thus, the pH of the solution will be 10.47.

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Here are the answers to the given post-lab questions:1. The color of the product was pale yellow, its mass was 0.082g, and the percent yield was 66.23%.

Calculation for percent yield:% Yield = (Actual yield/Theoretical yield) × 100%Theoretical yield = (Molar mass of anthracene-9-methanol/Molar mass of anthracene) × Moles of N-Methylmaleimide usedActual yield = Mass of product obtainedPercent yield = Actual yield/Theoretical yield × 100% = (0.082/0.124) × 100% = 66.23%2. The melting point range of the crude product was 232.8 − 236.2°C. The literature value of the melting point is 237-239°C. Therefore, the purity of the product was low.3.

The following arrow-pushing mechanism illustrates the Diels-Alder reaction of anthracene-9-methanol and N-maleimide:4. Anthracene is a suitable diene for the Diels-Alder reaction because it has two alternating double bonds, which are responsible for the formation of cyclic compounds through a Diels-Alder reaction.5. The hydrophobic effect is caused by nonpolar substances interacting with one another. The nonpolar molecules in water form clusters because they are attracted to one another.

The interactions between nonpolar molecules are stronger than the interactions between water molecules. The "hydrophobic effect" explains why organic compounds aggregate in water.6. a. Atom Economy = (Molar mass of anthracene-9-methanol + Molar mass of N-Methylmaleimide)/Molar mass of anthracene × 100%Atom Economy = (188.23 + 111.1)/178.24 × 100% = 178.24% b. E-Factor = Mass of waste produced/Mass of product obtainedE-Factor = (Mass of N-Methylmaleimide + Mass of Anthracene-9-methanol - Mass of product obtained)/Mass of product obtainedE-Factor = (0.106 + 0.067 - 0.082)/0.082 = 0.9548 or 95.48%.

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Answer:

the answer is 47.9 and ik because I just had that question

The empirical formula of the compound is O₄Pb₃.

An Empirical system is the chemical system of a compound that offers the proportions of the elements gifted within the compound however not the real numbers or arrangement of atoms. This would be the lowest complete variety ratio of the elements within the compound.

Amount of lead (Pb) = 90.6%

⇒and amount of oxygen = 9.4%

taking the whole number ratio

o = 4

Pb = 3

∴ ⇒O: Pb=4:3

O4Pb3 answer.

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The train cars moves in the same direction when the engine car begins

moving to the left.

The law of magnetism states that like poles repel and unlike poles attract.

In substances which have magnetic field, they are known to attract each

other.

The engine and train car are highly magnetized which results in them

moving in the same direction when they are in close contact with one

another.

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Here is a list of some renewable resources, I hope these help answer the question, or help to answer it.

-ethanol

-hydropower

-geothermal power

-wind energy

-solar energy

-biomass

(Biomass refers to organic material from plants and animals)

Wind, forest, tides and geothermal energy are the resouces of renewable energy.

Renewable resources are energy sources that never run out and can provide a steady supply of clean energy.

Hence resouces of renewable energy are wind, forest, tides and geothermal energy.

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Answer:

Increased the concentration

Explanation:

Complete Question

Open the simulation by pushing the play button.  Begin by dragging the concentration tester overto the liquid and add drink mix until the concentration reaches approximately 2.oo mol/L.  This means there are 2.00 moles of the drink mix in 1 Liter of the solution. Add more drink mix until you notice a color change. Have you increased or decreased the concentration? (Higher number means a higher concentration).

Solution

Drink mix is basically the solute which is added to solvent i.e water.

The higher is the amount of drink mix in the solvent, the higher is the concentration of the solute and hence darker is the color of the drink.

Hence, in the case the concentration of the drink has been increased.

C2H2 will be left  when the burning is complete.

The equation of the reaction is; 2C2H2 + 5O2 --> 4CO2 + 2H2O

The number of moles of C2H2 reacting is = 1.20 g/26 g/mol = 0.046 moles

The number of moles of O2 is = 3.50 g/32 g/mol = 0.109 moles

Since;

2 mole of C2H2 reacts with 5 moles of O2

x moles of C2H2 reacts with 0.109 moles of O2

x = 2 mole × 0.109 moles/5 moles

x = 0.044 moles of C2H2.

It then follows that C2H2 is the reactant in excess so C2H2  will be left  when the burning is complete.

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Answer:

The smallest atomic unit which maintains the physical properties of a compound is called a molecule.

Explanation:

A molecule is the smallest unit of a compound that can exist independently and still retain the properties of that compound. It is made up of two or more atoms that are bonded together, and it is the basic unit of a chemical compound. The atoms in a molecule are held together by chemical bonds, which are the attractive forces that hold the atoms together. Molecules can be made up of different types of atoms, and the type and arrangement of atoms in a molecule determine the properties of the compound.

The resolution between Peak A and Peak B is approximately 55.71.

First, we need to calculate the peak width at half height (W1/2) for Peak A. The formula to do this is:
W1/2 = 2.35482 * sigma
Before we use the formula, we need to convert sigma from seconds to minutes by dividing it by 60:
sigma (in minutes) = 1.50 sec / 60 = 0.025 min
Now we can calculate W1/2 for Peak A:
W1/2 = 2.35482 * 0.025 min ≈ 0.0587 min
Next, we'll calculate the resolution between Peak A and Peak B. The formula for resolution is:
Resolution = (trB - trA) / ((W1/2A + W1/2B) / 2)
We have all the values needed:
trA = 2.75 min
trB = 3.15 min
W1/2A = 0.0587 min
W1/2B = 0.0988 min
Now we can calculate the resolution:
Resolution = (3.15 - 2.75) / ((0.0587 + 0.0988) / 2) ≈ 4.385 / 0.07875 ≈ 55.71

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A chemical reaction in which bonds are created is usually associated with The consumption of energy

Consumption method using, shopping for, or consuming something. If we do not lessen our power intake, we are able to run out of fuel. Conspicuous intake is shopping for something to expose off. Consumption is associated with the verb consume, which means to eat, use, or buy.

There are four Consumption kinds of client goods. They are comfort goods, distinctiveness goods, purchasing goods, and unsought goods.

Consumption of Food intake is a periodic behavior. It is brought on at diverse moments of the day through some converging factors (time of day, want a state, sensory stimulation, social context, etc.).

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The snack containing 10 g of carbohydrates, 2 g of protein, and 5 g of fat has a total of 93 calories.

To calculate the total number of calories in the snack, we need to consider the caloric content of each macronutrient (carbohydrates, proteins, and fats).

Carbohydrates: Carbohydrates provide 4 calories per gram. In this case, 10 g of carbohydrates would contribute 10 g * 4 calories/g = 40 calories.

Proteins: Proteins also provide 4 calories per gram. With 2 g of protein, we have 2 g * 4 calories/g = 8 calories.

Fats: Fats provide 9 calories per gram. For the 5 g of fat in the snack, we have 5 g * 9 calories/g = 45 calories.

Now, to find the total calories, we add up the calories from each macronutrient: 40 calories (carbohydrates) + 8 calories (protein) + 45 calories (fat) = 93 calories.

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The estimated effective nuclear charge experienced by a 3 p electron of chlorine is 6.1.

It is the charge felt by any many-electron atom's outermost valence electrons. This is accomplished by taking into account the quantity of shielding electrons surrounding the nucleus.

It is used to assess the actual nuclear charge that an electron in a multi-electron atom experiences. This rule states that an electron's actual nuclear charge is less than its actual nuclear charge because of screening by other electrons in the atom.

The arrangement of an atom's electrons in its atomic orbitals is known as its electronic configuration. J. J. Thompson made the discovery of the electron. J. J. Thompson made the electron discovery in 1887. Every atom consists of a hefty nucleus that is encircled by electrons.

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Answer:

High spec heat cap

Explanation:

Specific heat =   Q/(m *Tchange)

re-arrange to

Tchange =  Heat/(m *spec heat)

   this shows that a high  spec heat (in the denominator) will require a lot of heat (in the numerator) to change the Temp much  

Answer:

Explanation:

Density of a substance can be found by using the formula

From the question

Density = 11.35 g/cm³

mass of iron = 1.1 g

To find the volume substitute the values into the above formula and solve for the volume

That's

Making volume the subject we have

So we have

= 0.096916

We have the final answer as

Hope this helps you