The Ksp Of Mercury(II) Hydroxide, Hg(OH)2, Is 3.6010^26 . Calculate The Solubility Of This Compound In (2024)

Answer:

I don't understand snap the equation and send it

When the magnet on the right is moved toward the suspended magnet on the left, a repulsive force between the two magnets causes the suspended magnet to swing to the left; option B

What are magnets?

Magnets are materials which exhibit magnetism or produces a magnetic field.

Magnets attract other objects to themselves and these objects are said to be magnetic.

Magnetic objects include metals such as iron.

A magnet has two ends called poles. The poles of a magnet are the North and South pole.

Magnetic lines of forces begin at the North pole whereas magnetic lines of forces end in at the south Pole.

The law of magnetism states that like poles of a magnet repel each other while unlike poles attract.

Considering the given magnets;

the magnet on the right is moved toward the suspended magnet on the left causing the suspended magnet to move to the left means that the end of the magnets repel each other.

This implies that the ends are two similar ends of the magnets.

In conclusion, unlike ends of a magnet attract whereas unlike ends repel.

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Note that the complete question is given below:

The magnet on the right is moved toward the suspended magnet on the left.

Which statement describes the interactions of the magnets in terms of their magnetic fields?

A. A repulsive force between the two magnets causes the suspended magnet to swing to the left.

B. A repulsive force between the two magnets causes the suspended magnet to oscillate like a pendulum.

C. An attractive force between the two magnets causes the suspended magnet to swing to the right.

D. An attractive force between the two magnets cause the suspended magnet to oscillate like a pendulum.

Answer:

0.399

Explanation:

Sig Fig rules

Answer:

Cell are too small to see without a micrscope

Explanation:

Cuz I learned in school

The following which is not one of the basic points of Cell Theory is cells are too small to see without a microscope. Hence option c is correct.

What is microscope?

Microscope is defined as a lab tool for inspecting things that are too small to be seen with the eye. The study of small objects and structures under a microscope is known as microscopy. Being microscopic means being difficult to see without a microscope. A specimen that has been placed on a slide is seen, magnified, and imaged using the microscope's optical components.

Cell theory is defined as a cells are believed to be the primary building blocks of all living tissues according to a basic biological scientific hypothesis. The essential unit of structure and function in living things is the cell, according to the current Cell Theory, which is widely recognized. One or more cells make up every living thing. Cellular division creates new cells from existing ones.

Thus, the following which is not one of the basic points of Cell Theory is cells are too small to see without a microscope. Hence option c is correct.

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Comparing consumer products on the basis of their components like use, safety, quality, and cost is necessary as it creates awareness about the product among consumers.

Consumer Products - It is a kind of product that is bought by individuals for personal use or consumption. These are the end products or final goods reached to the end-user i.e consumer by retailer via various distribution channels. Ex- grocery, clothing, etc.

Marketing strategies are built based on different market segmentation and types of consumer products available to the target market.

Types of Consumer Products

There are four types of consumer products, they are:-

Convenience Products

Shopping Products

Specialty Products

Unsought Products.

Hence, it is necessary to compare consumer products on basis of the components like use, safety, quality, and cost. It also increases the competition as well as creates awareness among consumers.

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The 3 main layers of earth has its own features, as follows;

The Crust: this is seen as the outer layer and this is where humans as well as animals live and plants develop.The Mantle: is seen as the semi-solid magma layer that is made up of iron, magnesium, as well as silicon.The Core: is known to be centrally made up of solid mass of metal ( and it has an inner core) as well as a liquid mass of iron/nickel (which is the outer core).

What is the full meaning of Earth?

The earth is known to be a kind of fragmental particles that are made up of different part of the surface of the globe.

Note therefore, The 3 main layers of earth has its own features, as follows;

The Crust: this is seen as the outer layer and this is where humans as well as animals live and plants develop.The Mantle: is seen as the semi-solid magma layer that is made up of iron, magnesium, as well as silicon.The Core: is known to be centrally made up of solid mass of metal ( and it has an inner core) as well as a liquid mass of iron/nickel (which is the outer core).

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Moving material along certain gradients is necessary for osmosis, diffusion, filtration, and the transport of ions away from similar charges.

Osmosis is the flow of solvent molecules over a semi-permeable membrane from an area of lower concentration to a region of higher concentration Molecules diffuse when they travel from one area of higher concentration to another area of lower concentration The process of filtering involves moving liquid substances through a separating material known as a filter in order to separate solid particles from liquid. Due to the difference in pressures between the solid and liquid substances, this process is made feasible. Because of the difference in electrical potentials between the charges, ions move away from like charges.

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The statement that is true regarding percentage error is as follows: the percentage error is a percentage that details how far an approximation is from the exact value after an experiment (option B).

What is percentage error?

Percentage error is the difference between estimated value and the actual value in comparison to the actual value and is expressed as a percentage.

The percentage error in an experiment can be calculated by subtracting the actual value from the estimated value divided by the actual value, then multiplying the result by 100.

Percentage error = (Estimated value - Actual value/ Actual value) × 10

Therefore, the statement that is true regarding percentage error is as follows: the percentage error is a percentage that details how far an approximation is from the exact value after an experiment.

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The result of the calculation to the proper number of significant figures will be 31.6.

Addition operation to a proper significant figure

There are certain rules guiding significant figures in mathematical operations.

When it comes to performing an addition or subtraction operation, the significant figure of the final answer takes cognizance of the participating number in the operation with the lowest significant figure after the decimal. The number of significant digits is then applied to the final answer, after its decimal.In division of multiplication operations, the figure with the lowest significant digits determines the significant digits of the final answer.

Following the first rule:

1.4 + 15 + 7.15 + 8.003 = 31.553

The participating number with the lowest significant digit after the decimal is 1.4 with just one significant digit. Thus, the final answer would be 31.6.

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The area of the rectangular painting which is 2890 square centimeters is equivalent to 447.95 square inches

How to convert cm² to in²?

Square inch (in²) is a unit of area equal to the area of a square the sides of which are each one inch long.

Square centimeter (cm²) is another unit of area equal to that of a square of sides 1 centimeter.

The conversion factor of square centimeter to square inches is as follows:

1 square centimetre = 0.155 square inch

2890 square centimeters = 447.95 square inches

Therefore, the area of the rectangular painting which is 2890 square centimeters is equivalent to 447.95 square inches.

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Answer:

C

Explanation:

C is the right answer for this question.

The ionization energy increases as the ration of protons to electrons increases.

On the periodic table, as we move from left to right through a period, the initial ionization energy rises. This is due to the outermost electron becoming more closely bound to the nucleus as the nuclear charge increases.

Ionization energy - the energy needed to remove an electron from a gaseous atom, is the one that best exemplifies periodic behavior.

The energy needed to remove each additional electron from an atom grows gradually, with the removal of an electron from a filled inner shell causing a significant increase.

A stable atom becomes electrically imperfect or imbalanced if we remove one of its electrons. In other words, the nucleus's protons (positive charges) outnumber its electrons (negative charges). It is a positive ion because the atom has a plus-one charge after losing an electron.

Therefore on removing the second electron more ionization energy will be required than first. So option D is correct.

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Answer:

The position of their eyes

Explanation:

See, the dog is able to see the object more than the rabbit can is because of the position of their eyes.

The dogs eyes are positioned in the front like our eyes making the dog have a stereoscopic vision (180 degree field of view)

With rabbits though, they can't really see what's in front of them because their eyes are on the side hence the dog can see the object more than the rabbit can.

Gold has a density of 19.2 gm/cm.

The necklace weighs 19.21 g.

Water was initially present in 20.8 ml.

22 ml is the total amount of water.

Due to its great density, which results from the fact that each of gold's atoms is individually highly heavy, gold is referred to as a heavy metal.

(a) The necklace's volume is 22 - 20.8 ml.

- The density of a necklace is determined by its mass and volume.

The necklace's density is 19.21 divided by 1.2.

Necklace has a density of 16 gm/ml.

(b) The necklace is constructed of alloy rather than pure gold.

This is due to the necklace's varied density from that of pure gold.

It follows that the necklace contains something else in addition to the gold.

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The required volumes are;

1) 2 mL

2) 4 mL

3) 5 mL

What is the amount needed?

Now we know that the dilution formula can be used to obtain the quantity of a solution that could be used in the preparation of another by the use of serial dilution. In this case, we can see that an aliquot of the solution is taken and then made up to mark in order to obtain the concentration that we require as we are trying to carry out the process of the serial dilution.

Now let us try to see how we can be able to prepare the solutions that are required as follows;

To prepare 50mM of of calcium nitrate;

C1V1= C2V2

C1 = initial concentration’

V1 = initial volume

C2 = final concentration

V2 = final volume

C1 = C2V2/C1

C1 = 20.0 mL * 5.00 mM/50mM

C1 = 2 mL

2) 20.0 mL * 1.00 mM/ 5.00 mM

= 4 mL

3) 20.0 mL * 0.250 mM/1.00 mM

= 5 mL

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Answer:

A

Explanation :
454 cm/min = 0.169261

1) The mass of the object is 18 g

2) The correct relationship is option C

What is density?

Density is the ratio of the mass to the volume of a body. We know that the density of the body is an intrinsic property. This implies that it does not change with the amount of substance or with the mass of the body. Let us now try to solve each of the problems.

1)Density = mass/volume

Volume = 1 cm * 3 m * 2 cm = 6 cm^3

Density of the body = 3 g/cm^3

Mass of the body = 6 cm^3 * 3 g/cm^3 = 18 g

2)To answer question 2, we have to remind ourselves of what we said that the density is the ratio of the mass to the volume of a body and that the density of a body is constant. This implies that the relationship that defines the relationship of the mass to the density of the material does not change and this is shown by option C.

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The intermolecular forces or the strength of C is more than that of B.

What are intermolecular forces?

Intermolecular forces are the forces that hold the molecules of any object in a particular state of matter.It exists between molecules.These forces are weak when compared with intramolecular forces.Hydrogen bonding, dipole-dipole, Vander Walls, and ion-dipole are the types of intermolecular forces.At a short distance, these forces are repulsive but at large distances they are attractive.

Here, we can see that C has dipole-dipole interaction while B has none.

Therefore, it states that the intermolecular forces present in C are much more than that in B.

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A polystyrene cup is used to minimise the thermal energy loss because polystyrene cup is acts as a very good insulator.

It is important to use polystyrene cup to minimise thermal energy loss because it prevent the heat energy loss as it has air bubbled trapped inside them. if we hold a hot coffee in a polystyrene cup , the hot coffee does not burn your finger because it is a bad conductor of heat. it is a natural insulator. we can also use this styroform or polystyrene idea to make home warm in cold region , it reduce the transfer of heat ,so that building stays warmer.

We can use plastic foam to reduce heat energy loss . Both polystyrene and plastic foams are the good insulators and bad conductor of heat.

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Considering the definition of molar mass, there are 162 grams of Al in 6 moles of Al.

Definition of molar mass

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

Mass of 6 moles of Al

You want to determine the mass in 6 moles of Al. So, being the molar mass of Al is 27 g/mole, you can apply the following rule of three: If by definition of molar mass 1 mole of Al contains 27 grams, 6 moles of Al contains how much mass?

mass= (6 moles× 27 grams) ÷1 mole

mass= 162 grams

In summary, there are 162 grams of Al in 6 moles of Al.

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Answer:

1) Raises the temperature. 2) Increases volume.

Trends in modern periodic table are:

variation of valency, atomic size , metallic properties and electronegativity

Valency - number of valence electrons . Elements of each group have same number of valence electrons. So, they have the same valency.

Atomic size- It is distance from the centre of the nucleus to the valence shell of the atom.

Along the period – Atomic radius decreases as effective nuclear charge increases . It pulls valence electrons closer to the nucleusDown the group – Atomic radius increases because new shells are added , thus the distance between nucleus and valence electrons increases.

Metallic properties -

Along the period – Metallic character decreases because tendency to lose valence electrons decreases due to the increasing nuclear charge.Down the group – As the distance between nucleus and outermost electron increases, nuclear pull decreases. This increases the tendency of an atom to lose valence electrons, thus metallic character increases.

Electronegativity-

Along the period – Electronegativity increases as the tendency to gain electrons in valence shell increases due to increasing nuclear charge. Down the group – Since distance between the nucleus and valence shell increases, nuclear pull decreases. This decreases tendency of atom to gain an electron, thus electronegativity decreases.

So we can conclude that periodic trends are specific patterns which are present in the periodic table, that illustrate different aspects of a certain element

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Electronic configuration of x will be1s² 2s² 2p⁶ 3s² 3p⁶ 4s² and electronic configuration of y will be 1s² 2s² 2p⁴.

Given,

Atomic number of x = 20

Atomic mass = 40

Atomic number of y = 8

Atomic mass of y= 16

Electronic configuration, sometimes referred to as electronic structure or electron configuration, is the arrangement of electrons in orbitals that surround an atomic nucleus.

A standardized notation is used for expressing electron configurations, in which the energy level and type of orbital are written first, followed by the number of electrons in the orbital. For instance, the electronic structure of carbon, which has an atomic number of 6, is 1s² 2s² 2p².

So, According to the question-

As we already know that atomic number equals number of electrons.

Hence,

Electronic configuration of x = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

Electronic configuration of y = 1s² 2s² 2p⁴

The given question is erroneous , the correct question should be-

Elements x and y are represented as x: atomic number 20, atomic mass 40 and y: atomic number 8 , atomic mass 16 for each of the elements write the electronic configuration using the s, p, d and f notations.

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​

Answer:

CH3COOH + OH- ----> CH3COO- + H2O

Answer:

chloroplast

Explanation:

hope this helps!

Explanation:

number 5 have nucleus....

changed answer=chloroplast

Answer: The Marshmellow

Explanation

The marshmallow turns from a solid to a gooey texture.

The percent mass of lead in tetraethyl lead is 64.1%.

What is the percent by mass of Pb in tetraethyl lead, Pb(C₂H₅)₄?

The percent by mass of an element in a compound is determined by taking the ratio of the atomic mass of the element and the molar mass of the compound and then multiply by 100%

Percent mass = (atomic mass of element/molar mass of compound) * 100%

atomic mass of Pb = 207

atomic mass of C = 12

atomic mass of H = 1

Molar mass of tetraethyl lead: 207 + 12 * 2 * 4 + 1 * 5 * 4

Molar mass of tetraethyl lead = 323 g/mol

Percent mass of Pb = 207/323 × 100%

Percent mass of Pb = 0.6408 × 100%

Percent mass of Pb = 64.1%

In conclusion, the percent mass of lead in tetraethyl lead is 64.1%.

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Answer:

Percent Composition (C) = 71.40%

Explanation:

To find the percent composition of carbon by mass, you need to (1) calculate the molar mass of C₂₀H₂₉FO₃ (using the atomic masses of each atom in the molecule), then (2) calculate the total amount of carbon in C₂₀H₂₉FO₃ (using the atomic mass of carbon), and then (3) calculate the percent composition of carbon.

(Step 1)

Atomic Mass (C): 12.011 g/mol

Atomic Mass (H): 1.008 g/mol

Atomic Mass (F): 18.998 g/mol

Atomic Mass (O): 15.999 g/mol

Molar Mass (C₂₀H₂₉FO₃):

20(12.011 g/mol) + 29(1.008 g/mol) + 18.998 g/mol + 3(15.999 g/mol)

= 336.447 g/mol

(Step 2)

Atomic Mass (C): 12.011 g/mol

Total Mass (C): 20(12.011 g/mol) = 240.22 g/mol

(Step 3)

mass of carbon
Percent Composition (C) = ----------------------------- x 100%
mass of molecule

240.22 grams
Percent Composition (C) = ----------------------------- x 100%
336.447 grams

Percent Composition (C) = 71.40%