Which of the following body organs is involved in helping the body keep its balance? O lungs O nose O ears O eyes​
Please answer quick

These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Option B)

A colloid is a type of mixture in which particles are dispersed throughout a medium, creating a homogeneous appearance. Unlike solutions, where the particles are completely dissolved, and suspensions, where the particles settle out, colloids have particles that are larger than those in solutions but smaller than those in suspensions. One characteristic of colloids is that they can scatter light due to the size of the particles. This scattering of light is known as the Tyndall effect. Examples of colloids include milk, fog, and aerosol sprays. These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Therefore option B) is correct

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Note Complete Question

which is an example of a colloid?

a mixture that settles out,

b mixture that scatters light,

c mixture that is separated by filtration,  

d salt and water mixture?

To solve this, we must know each and every concept related to mechanisms of organic reaction. Therefore, the  arrow that best describes the relationship between the reactants and products is the equilibrium arrow. The correct option is option A.

The technique of just an organic reactions is just the order of the steps in the process, giving information on which bonds are produced and/or disrupted in each step.

Understanding the processes of organic reactions is vital for understanding Organic Chemistry and for being able to harness the reactions to generate useful molecules. The  arrow that best describes the relationship between the reactants and products is the equilibrium arrow.

Therefore, the correct option is option A.

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The Fe^3+ is reduced in the reaction while the Al is oxidized in the reaction. The species that loses electrons (is oxidized) is called the reducing agent

A redox reaction (short for reduction-oxidation reaction) is a type of chemical reaction that involves the transfer of electrons between two or more species. In redox reactions, one reactant loses electrons (is oxidized) while another gains electrons (is reduced).

The species that loses electrons (is oxidized) is called the reducing agent, since it causes another species to be reduced. The species that gains electrons (is reduced) is called the oxidizing agent, since it causes another species to be oxidized.

Reduction half equation;

2Fe^3+(aq)  + 6e -----> 2Fe(s)

Oxidation half equation;

2Al(s) →2Al3+(aq) + 6e

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The Voltage is the pressure from the electrical circuit of the power source that passes the current.

The Voltage is defined as the pressure from the electrical circuit of the power source that will passes the charged electrons that is the current through the conducting loop, it will enable them to do work  because of the illuminating the light. The in simple terms is : voltage = pressure, and it is denoted as the volts and the symbol is the V.

The voltage is described as the force that causes the flow of the charged particles. The Voltage is also called as the electromotive force.

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An acetate buffer would be most effective in maintaining pH within a range of approximately 3.76 to 5.76.

The pH range over which an acetate buffer can effectively maintain pH depends on the pKa of the acid used and the concentration ratio of the acid to its conjugate base (acetate ion). Acetate buffer solutions are commonly prepared using acetic acid (CH3COOH) and sodium acetate (CH3COONa).

The pKa of acetic acid is approximately 4.76. In general, a buffer is most effective when the pH is within one unit of its pKa. Therefore, an acetate buffer would be most effective in maintaining pH within a range of approximately 3.76 to 5.76

Outside this pH range, the buffer may not effectively resist changes in pH, as the concentration of the acid and its conjugate base will be significantly imbalanced. At lower pH values, the acid concentration will dominate, while at higher pH values, the concentration of the acetate ion will dominate, leading to a diminished buffering capacity.

However, it's important to note that the exact pH range over which an acetate buffer can maintain pH effectively may vary depending on the specific concentration and preparation of the buffer solution.

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As the disturbance gets to the land the warm ocean waters are no longer around thus the hurricane would die off rapidly

The hurricane tends to occur when there is a rise of the warm air over the ocean. It should be noted that in the event of the hurricane there would be a sudden rising of the sea and this is going to rise so high that the violent waves would now begin to invade the land and cause a lot of destruction on its path as it is moving out from the ocean where the disturbance started.

Hence we can see that the origin of the hurricane is from some sort of a convection current that is taking place in the ocean and the hurricane must also be sustained by the existence of this convection current as the disturbance is moving away from the sea.

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The amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

To find the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C, we can use the equation Q = mcAT.
First, we need to find the value of m, which is the mass of the water in grams. In this case, it is given as 200 grams.
Next, we need to find the value of AT, which is the change in temperature in degrees Celsius.

This can be calculated by subtracting the initial temperature from the final temperature, which gives us 60 C - 20 C = 40 C.
The specific heat capacity of water, C, is given as 4.18 Joules per gram per degree Celsius.
Now we can plug in the values into the equation:
Q = mcAT
Q = (200 g) x (4.18 J/g°C) x (40°C)
Q = 33,440 J
Therefore, the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

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Answer:

Explanation:Canguru comeu algumas folhas de 3 galhos de eucalipto. Cada galho tinha inicialmente20 folhas. Canguru comeu algumas folhas do primeiro galho e depois comeu tantas folhas do segundo galho quantas tinham sido deixadas no primeiro galho. Depois ele comeu 2 folhas do terceiro galho. No total, quantas folhas foram dei-xadas nos 3 galhos?Canguru comeu algumas folhas de 3 galhos de eucalipto. Cada galho tinha inicialmente20 folhas. Canguru comeu algumas folhas do primeiro galho e depois comeu tantas folhas do segundo galho quantas tinham sido deixadas no primeiro galho. Depois ele comeu 2 folhas do terceiro galho. No total, quantas folhas foram dei-xadas nos 3 galhos?Canguru comeu algumas folhas de 3 galhos de eucalipto. Cada galho tinha inicialmente20 folhas. Canguru comeu algumas folhas do primeiro galho e depois comeu tantas folhas do segundo galho quantas tinham sido deixadas no primeiro galho. Depois ele comeu 2 folhas do terceiro galho. No total, quantas folhas foram dei-xadas nos 3 galhos?Canguru comeu algumas folhas de 3 galhos de eucalipto. Cada galho tinha inicialmente20 folhas. Canguru comeu algumas folhas do primeiro galho e depois comeu tantas folhas do segundo galho quantas tinham sido deixadas no primeiro galho. Depois ele comeu 2 folhas do terceiro galho. No total, quantas folhas foram dei-xadas nos 3 galhos?Canguru comeu algumas folhas de 3 galhos de eucalipto. Cada galho tinha inicialmente20 folhas. Canguru comeu algumas folhas do primeiro galho e depois comeu tantas folhas do segundo galho quantas tinham sido deixadas no primeiro galho. Depois ele comeu 2 folhas do terceiro galho. No total, quantas folhas foram dei-xadas nos 3 galhos?

Answer:

maybe try to do something with electricity?

Explanation:

give me an update on when u find one :) cant wait to see it

The thing that cellular respiration and a piece of avocado turning brown is that both chemical changes.

Cellular respiration is a chemical process because there occurs the change of substances. The final byproducts of cellular respiration are ATP, water, and carbon dioxide which are result of chemical processes.

On the other hand, a piece of avocado oxidizing and turning brown is a chemical transformation that happens when the enzyme polyphenol oxidase in the fruit's cells combines with oxygen in the air. This irreversible process can be slowed down by preserving the avocado or using lemon juice.

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The vocabulary word from collision theory to what was happening at the pet adoption.

Reactants - The foster family with the pet and the adoptive family entering the park alone

Products - The adoptive family with their new pet and the foster family  petless

Collision theory says that for a chemical reaction to happen, the reactant molecules must come in contact with each other with enough energy and with all things being equal or in sync. The rate of the reaction is proportional to the number of collisions that occur.

The other answers are:

Temperature - More adoptions happen in the summer than in the winter.

Surface Area - The foster families started in a solid block, but decided to spread out in the park.

Concentration - Once the foster families spread out, they were able to invite more foster families to the event

Catalyst - The foster families and adoptive families would sit together at a picnic table to meet the pet and fill out paperwork.

Activated Complex - Meeting between foster families and adoptive families to meet the pet and fill out paperwork

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Answer:

look at the graph

Explanation:

We know that as temperature increases, solubility increases.So, when there is a rise in temperature, as more solute become dissolved, the saturation point will be lifted and more amount of solute will be needed to reach saturation.

Here, when the temperature was 20oC, 38 g of salt was needed for saturation. As the temperature is increased by 15oC, at 35oC more amount of salt was needed to reach saturation(45g). So a 15oC rise in temperature caused a 7 g rise in the amount of salt needed for saturation. So, if temperature is increased additionally through 10oC, an approximate 4.5 g of salt will be needed more to reach the saturation. That is at 45oC, the amount of salt at saturation will be approximately 49.5 g.

So, the temperature and solubility as well as temperature and amount of salt at saturation are linearly related(directly proportional)

The molecular formula mass ratio is approximately 1.48, the molecular formula of the compound is approximately N₁O₂.

To determine the molecular formula of the compound, we need to follow a series of steps. First, we calculate the moles of nitrogen (N) and oxygen (O) in the given mass percentage composition.

Assuming we have 100 g of the compound, we would have:

30.45 g of N

69.55 g of O

Next, we calculate the number of moles of each element using their respective molar masses:

Moles of N = 30.45 g / 14.01 g/mol ≈ 2.18 mol

Moles of O = 69.55 g / 16.00 g/mol ≈ 4.35 mol

We then divide the number of moles by the smallest number of moles (in this case, N) to obtain a simple ratio:

N ≈ 2.18 mol / 2.18 mol = 1

O ≈ 4.35 mol / 2.18 mol ≈ 2

This gives us the empirical formula, which is N₁O₂.

Finally, to determine the molecular formula, we need to find the ratio of the empirical formula's molar mass to the experimental molar mass provided. We calculate:

Empirical formula mass of N₁O₂ = 14.01 g/mol + (2 × 16.00 g/mol) = 46.01 g/mol

Experimental molar mass = 1.63 g / (389 mL × 0.00°C / 22.4 L/mol × 0.775) = 68.34 g/mol

Dividing the experimental molar mass by the empirical formula mass:

Molecular formula mass ratio = 68.34 g/mol / 46.01 g/mol ≈ 1.48

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Answer: 1.0324(g/ml)

We have the formula \(m = Vd\)

Where m is the mass, V is the volume, and d is the density

Divide both sides by V, we get  \(d=\frac{m}{V}=\frac{19.1}{18.5} = 1.0324 (g/ml)\)

steam takes up the largest volume but  surprisingly as ice has larger volume than liquid.

In Water the  molecules are attracted to each other while at low temperature these molecules are held together in a rigid structure called as ice.

When temperature increases the molecules gains more energy which enables them to escape the lattice state and converted into water form, flow.  

At the highest temperature these molecules  gain huge amount of energy in which they can easily overcome the inter-molecular attraction that is gaseous state.

In gaseous state the molecules move freely.

The intermolecular forces in solid state of water are very strong while in liquid state it is moderate and in gaseous state  it is very weak.

The chemical composition of water in all three states can not change like physical state change.

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Answer:

1. Density can be used to identify a substance

2. Density can be used to ascertain whether a substance will float in water.

Explanation:

The calculation of the density of a substance can be used to identify the substance. If the density of a substance is calculated accurately, and compared with a table of standard densities, then we can identify that substance.

Also, density determines whether an object will float or sink in water. If an object is less dense than water then it will float in water. If it is denser than water, then it will sink in water.

Explanation:

Cytoplasm is a semi-solid substances inside cells.

From the attached image, the volume of the air column is 300 mL and the temperature of the gas is 3°C.

The relationship between the temperature and the volume of a given mass of air is described by the gas law known as Charles's law. According to this law, the volume of a fixed amount of gas (such as air) held at constant pressure is directly proportional to its absolute temperature (measured in Kelvin). In other words, as the temperature of the air increases, its volume will also increase, and vice versa.

Mathematically, Charles's law can be expressed as:

V ∝ T

where V is the volume of the gas, T is its absolute temperature, and the symbol "∝" means "is proportional to".

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The volume of \(N_2O_5\) needed to produce 9.64 L of \(NO_2\) is 4.97 L, calculated using stoichiometry and the ideal gas equation.

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According to the forces of attraction , as water passes on in water cycle its state changes from liquid to vapor and solid in form of ice and then back to liquid.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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The balanced equation for the given reaction is:

4 Si4C3 + 15 O2 → 8 Si2O3 + 3 C

What is Balanced Chemical Equation?

The coefficients in a balanced chemical equation represent the stoichiometric relationship between the reactants and products. They show the relative amounts of each substance that are involved in the reaction. In the given chemical equation, Si4C3 + O2 -> Si2O3 + C, the coefficients can be determined by balancing the number of atoms of each element on both sides of the equation.

Starting with Si, there are 4 Si atoms on the left and 2 Si atoms on the right, so a coefficient of 2 is needed in front of Si2O3 to balance the number of Si atoms.

Moving on to C, there are 3 C atoms on the left and 1 C atom on the right, so a coefficient of 3 is needed in front of C to balance the number of C atoms.

Finally, for O, there are 2x3=6 O atoms on the left and 2x2=4 O atoms on the right, so a coefficient of 3 is needed in front of O2 to balance the number of O atoms.

The balanced equation is thus: Si4C3 + 3O2 -> 2Si2O3 + 3C, with coefficients of 1, 3, 2, and 3 for Si4C3, O2, Si2O3, and C, respectively.

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Answer:

5.5 mL

Problem #4: What change in volume results if 60.0 mL of gas is cooled from 33.0 °C to 5.00 °C? The volume decreases by 5.5 mL.

Baking soda or bicarbonate of soda, often known as sodium bicarbonate (IUPAC name: sodium hydrogencarbonate , is a chemical substance having the formula NaHCO3.

It is a salt made up of the bicarbonate anion (HCO3) and the sodium cation (Na+). Sodium bicarbonate is a white, crystalline solid that frequently takes the form of a fine powder.

It tastes somewhat alkaline and salty, like washing soda. Nahcolite is the natural mineral form. It is dissolved in many mineral springs and is a part of the mineral natron.

The salt is known by several names, including baking soda, bread soda, cooking soda, and bicarbonate of soda, and is frequently found next to baking powder in supermarkets due to its long history and widespread use.

Therefore, Baking soda or bicarbonate of soda, often known as sodium bicarbonate (IUPAC name: sodium hydrogencarbonate , is a chemical substance having the formula NaHCO3.

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The energy change is -8.43 kJ, as 15.0 g of water cools from 60.0 °C to 19.5 °C.

Energy is the ability to do work. It comes in many forms, including mechanical, electrical, chemical, thermal and nuclear energy. It is a fundamental part of nature and is essential for the operation of all living things. Energy can be transformed from one form to another and can be converted between different forms of energy. It is the foundation for many processes and activities in the natural world, and it is used to power the modern world. Energy is used to fuel our cars, power our lights, heat our homes and industrial processes, and provide entertainment.

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Sn(ClO3)2 -> SnCl2 + 3O2

Explanation: There should be equal amounts of each element on both sides. This assumes it’s referring to Sn 2+, and not Sn 4+.

The balanced chemical equation will be:

\(\rm \bold{(SnClO_3)_2\;\overset{\Delta}{\rightarrow}\;SnCl_2\;+\;3\;O_2}\)

Stannous chlorate has been also known as Tin chlorate. The compound has been a white crystalline powder and has been used for the sensitization of the metal.

The decomposition of Stannous chlorate under the influence of heat has resulted in the formation of stannous chloride and oxygen gas.

The reaction can be given as:

\(\rm (SnClO_3)_2\;\overset{\Delta}{\rightarrow}\;SnCl_2\;+\;O_2\)

The number of atoms on the reactant and the product side is not equal. By putting the coefficient to the compound, the reaction can be balanced. The balanced chemical equation will be:

\(\rm \bold{(SnClO_3)_2\;\overset{\Delta}{\rightarrow}\;SnCl_2\;+\;3\;O_2}\)

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Answer:

See explanation below

Explanation:

To get a better understanding watch the picture attached.

In the case of the reaction with Bromine, the -N(CH₃)₂ is a strong ring activator, therefore, it promotes a electrophilic aromatic sustitution, so, in the mechanism of reaction, the lone pair of the Nitrogen, will move to the ring by resonance and activate the ortho and para positions. That's why the bromine wil go to the ortho and para positions, mostly the para position, because the -N(CH₃)₂ cause a steric hindrance in the ortho position.

In the case of the reaction with HNO₃/H₂SO₄, the acid transform the -N(CH₃)₂ in a protonated form, the anilinium ion, which is a deactivating of the ring, and also a strong electron withdrawing, so, the electrophile will go to the meta position instead.

Hope this helps.

The material that is located inside the container is a mixture consisting of two compounds. That is option B.

A compound is defined as a chemical substance that is composed of identical molecules consisting of atoms of two or more chemical elements and which are chemically combined together.

In the above mixture there are two different compounds that are chemically combined together through Chemical bonds. That is compounds of blue and red colour.

Therefore the mixture represented above is a mixture consisting of two compounds.

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Answer:

Its D

Explanation:

A mixture consisting of two elements

Answer:

D. Brain

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