Give examples of:

3 Solid to solid mixtures
3 Solid to liquid
3 liquid to liquid
3 liquid to gas

thanks

Wastewater, another name for liquid waste, has a very diverse composition that primarily depends on its source. Residential, commercial, and industrial regions are the three primary sources in towns and cities.

What are liquid wastes?

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After being made in glycolysis and the krebs cycle the nadh and fadh2 bring the electrons to: ATP.

NADH and FADH2 molecules formed during Glycolysis and biological processes carry their electrons to the electron transport chain. The electron transport chain creates a proton gradient that ultimately ends up in the assembly of an outsized amount of ATP.

High-energy electrons are released from NADH and FADH2, and they move along electron transport chains, like those employed in photosynthesis. because the high-energy electrons are transported along the chains, a number of their energy is captured.

Both NADH and FADH2 donate two electrons to the electron transport chain, so theoretically they must make the identical amount of ATP.

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The main precautions to take if a gas cylinder sign is present in the lab visually check that the gas cylinder is restrained, but keep a safe distance from it. The correct option is c.

Precautions are the preventive steps that are taken to save yourself from any dangerous circumstances. These steps are always taken in doing experiments and other scientific procedures.

Here, the precautions are to check the gas cylinder.

Thus, the correct option is c, Visually check that the gas cylinder is restrained, but keep a safe distance from it.

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The question is incomplete. Your most probably complete question is given below:

Remove the strap from around the gas cylinder to use it in the lab.

Open the valve on the gas cylinder periodically to release pressure.

Visually check that the gas cylinder is restrained, but keep a safe distance from it.

Test out the regulator on the gas cylinder to make sure it is working properly.

Answer:

Mercury is a chemical element with the symbol Hg and atomic number 80. It is also known as quicksilver and was formerly named hydrargyrum

Source: Wikipedia

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If the price of music lessons falls to $20, the statement which best describes the income and substitution effects is: C. The income effect is that she now can spend more on both goods. The substitution effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.

Price can be define as an amount of money which is primarily set by the seller of a good (product), and it must be paid by a buyer to the seller, so as to enable the acquisition of this good (product).

Income effect can be defined as a phenomenon which causes an individual (consumer) to adjust his or her consumption of a product due to an increase in its price and change in the level of income.

In conclusion, we can reasonably infer and logically deduce that for each music lesson Emily had purchased before, there is an extra $40 to spend on either music lessons or socks, and as such she might buy more of both due to the income effect.

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Complete Question:

Emily is a rational consumer who gets utility from socks and music lessons, and she considers both of these goods normal goods. Her marginal utility from socks is 50 utils and the price of socks is $5 per pair. Her marginal utility from music lessons is 600 utils and the price of music lessons is $60.

If the price of music lessons falls to $20, which of the following best describes the income and substitution effects?

A. The income effect is that she got a raise from her employer. The substitution effect is that music lessons are now relatively cheaper so she will buy more music lessons.

B. The income effect is that she effectively has more money to spend on either good. The substitution effect is that she will only buy socks now.

C. The income effect is that she now can spend more on both goods. The substitution effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.

D. The income effect is that she will no longer buy socks because she has more income to spend on music lessons, so she will only buy music lessons.

E. The substitution effect is that she now can spend more on either good. The income effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.

If a chemist adds a chemical to pure water and there is a 100-fold increase in the concentration of hydrogen ions then the best approximate value of new pH is 5.

When only pure water is there.

H₂O ⇌ H⁺ + OH⁻

pKw = pH + pOH

14 = pH + pH ( This is because the value of pH and pOH is same in water and we need to consider pH here.)

14 = 2pH

pH= 14/2 = 7

So, pH of pure water is 7.

Concentration of hydrogen ions in pure water can be calculated using the equation

pH = -log[H⁺]

7 = -log[H⁺]

[H+] = 10⁻⁷ M

So, the concentration of hydrogen ions in pure water is 10⁻⁷ M.

Now, the chemist added a chemical to this pure water such that there is   100- fold increase in concentration of hydrogen ions.

So, the new concentration of hydrogen ions is calculated as shown below.

[H⁺] = 100 ×10⁻⁷ M

      = 10⁻⁵ M

The new concentration of hydrogen ions is 10⁻⁵ M.

Now, the new pH can be calculated using the formula

pH  = -log[H⁺]

      = -log[10⁻⁵]

      = -×-5log[10]        

       = 5×1

       = 5

So, the new pH value = 5.

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The melting points of the products obtained ranged from 135 to 137, indicating that the compound is probably benzoin since the melting points of the products are very similar to those of benzoin (135 to 137). The melting point range of benzoin is closer to the product than that of hydroxybenzoic acid.

Benzoin is the sap (gum resin) that comes from cuts withinside the trunk of bushes that belong to the Styrax family. Benzoin is used at the pores and skin for ulcers, mattress sores (strain ulcers), cracked pores and skin, and lots of different conditions, however, there may be no correct medical proof to aid those uses.

Benzoin is on occasion referred to as gum benzoin or gum benjamin, and in India Sambrani or loban, aleven though loban is, thru Arabic lubān, a frequent time period for frankincense-kind incense, e.g., aromatic tree resin. Benzoin is likewise referred to as storax, now no longer to be harassed with the balsam of the equal call acquired from the Hamamelidaceae family.

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Answer:

carbon is the element left on the spoon after the sugar is heated.

The volume of the cylinder will be 7.76 cubic cm. Then the diameter of the cylinder will be 0.88 cm.

Let r be the radius and h be the height of the cylinder. Then the volume of the cylinder will be

V = π r²h cubic units

A cylindrical glass tube 12.7cm in length is filled with Mercury. The mass of Mercury needed to fill the tube is 105.5 grams.

We know that the density of Mercury is 13.59 grams per cubic cm. Then the volume of the Mercury will be

13.59 = 105.5 / V

V = 7.76 cubic cm

Then the radius of the cylinder will be

V = π r²h

7.76 = 3.14 x 12.7 x r²

r = 0.44 cm

Then the diameter of the cylinder will be

d = 2r

d = 2 x 0.44

d = 0.88 cm

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Answer:

I think it's false

Explanation:

Answer:

boiling point and melting point.

Phosgene was used during the World War I as a poisonous gas. It can be prepared by the action of sunlight on a mixture of carbon monoxide and chlorine gases. Phosgene has the following elemental composition by weight: 12.14% C, 16.17% O and 71.69% chlorine. Its molecular weight is 98.9 g mol-1.

Phosgene is a foremost industrial chemical used to make plastics and pesticides. At room temperature (70°F), phosgene is a toxic gas. With cooling and pressure, phosgene fuel can be converted into a liquid so that it can be shipped and stored.

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Calcium ions=0.502 mol, nitrate ions= 1.004 mol,oxygen atoms =3.012 mol.

Calcium nitrate Ca(NO3)2 = 0.502 mol

the required equation for the given question is below:

Ca(NO3)2 —-> 2N03-  + Ca2+

contains :2 nitrate ions per mole of Ca(NO3)2.,

1 calcium ion per mole of Ca(NO3)2.,

6 oxygen atoms per mole of Ca(NO3)2.

Calcium ions therefore equal 0.502 mol,

nitrate ions equal 2 x 0.502 mol

                    = 1.004 mol

oxygen atoms equal 6 x 0.502 mol

                     = 3.012 mol .

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The purpose of washing the organic layer with saturated sodium chloride is to remove any of the unreacted benzoic acid

One of the most prevalent minerals on Earth is sodium chloride (NaCl), also known as salt. It is a crucial nutrient for many animals and plants. Seawater and subterranean rock formations are also naturally sources of sodium chloride.

In order to keep patients from becoming dehydrated, sodium chloride, a vital nutrient, is utilized in healthcare. It is employed as a spice to boost flavor and as a food preservative. Additionally, sodium chloride is employed in manufacturing to create polymers and other goods. Additionally, it is employed to de-ice sidewalks and highways.

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Carbon dioxide may be found in solid form as dry ice.

Carbon dioxide may be found in solid form as dry ice. CO2 is widely used for temporary cooling since it does not have a liquid state at normal atmospheric pressure and instead sublimates immediately from the solid state to the gas state.

Dry ice is used as a refrigerant, particularly when shipping perishable goods like meats or ice cream, as it sublimes (passes straight into the vapour without melting) around 78.5 °C (109.3 °F).

Dry ice is carbon dioxide in its solid form.

Mass of CO2 = 10.8g

Molar mass of CO2 = 44g/mol

molecules of CO2 = 10.8g * 1 mol/44g= 0.245 mol * 6.022 * 10²³ molecules/1 mol= 1.48 * 10 ²³molecules.

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The number of molecules is 1.48 × 10 ²³molecules

Elaborate:

Mass of CO₂ = 10.8 g

Molar mass of CO₂ = 44 g/mol

molecules of CO₂ = 10.8 g × 1 mol/ 44 g= 0.245 mol × 6.022 × 10²³ molecules/1 mol= 1.48 × 10 ²³molecules

What is solid ?

Carbon dioxide may be found in solid form as dry ice. CO₂ is widely used for temporary cooling since it doesn't have a liquid state at normal atmospheric pressure and instead sublimates immediately from the solid state to the gas state.

Dry ice is used as a refrigerant, particularly when shipping perishable goods like meats or frozen dessert , because it sublimes (passes straight into the vapour without melting) around 78.5 °C (109.3 °F).

solid is carbon dioxide in its solid form.

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A p orbital has two regions or lobes of high electron probability, on either side of the nucleus. This gives the orbital dum-bb-ell shape.

The p - orbital is the atomic orbital consist of two sections called lobes  on either side of plane passing trough nucleus and the shape of p - orbital appears as dum-bb-ell.

The region around the nucleus is where the probability of electron finding is high and called as orbital. The p orbital lobed region is where their is high probability of finding an electron. The probability of finding electron in the nucleus is very low .                

Hence, A p orbital has two regions or lobes of high electron probability, on either side of the nucleus. This gives the orbital dum-bb-ell shape.

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The density of the gold will be 2.82 g/ [tex]cm^3[/tex].

The density of a substance is the ratio of the mass of the substance and its volume.

Mathematically, density = mass/volume

In this case; mass of gold = 1.5 kg or 1500 g, height of gold = 8.1 cm

Being a perfect 8.1 cm tall means the gold is a cube.

Volume of a cube = [tex]l^3[/tex]

Volume of gold = 8.1 x 8.1 x 8.1

                           = 531.441 [tex]cm^3[/tex]

Thus; density of gold = 1500/531.441

                                   = 2.82 g/ [tex]cm^3[/tex]

The density of the gold is, therefore, 2.82 g/ [tex]cm^3[/tex].

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The correct option is (e) none of these ,Valency is the ability of an element to combine.

Valency is the ability of an element to combine. Elements in the same group of the periodic table have the same valency. An element's valency is determined by how many electrons make up its outer shell.

A property of an element called "valency" defines how effectively it can meld with other elements. It is a way to count how many electrons are in an atom's outermost shell.

An atom's stability is determined by its valence electrons. Additionally, valence electrons are in charge of an atom's stability. The Octet Rule states that atoms often gain or lose electrons to reach the octet state, which is defined as having eight electrons in their valence shell. They stabilise at this stage.

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If the reaction occurs with an 82. 4% yield mass of aluminum should be reacted with excess oxygen to produce 45. 0 grams of al2o3 is

4 Al(s) + 3 O2(g) → 2 Al2O3(s)

Molar mass of Al = 26.98 g/mol

Molar mass of O2 = 31.99 g/mol

Molar mass of Al2O3 = 101.96 g/mol

From the above-balanced reaction:

4 x 26.98 = 107.92 g of Al produces 2 x 101.96 = 203.92 g of Al2O3

Hence, the amount of 203.92 g of Al2O3 is 100% yield.

But given condition is only for 82.4% yield, so the mass of Al2O3 associated with an 82.4% yield

= 82.4 x 203.92 / 100

= 168.03 g of Al2O3

Now, as 168.03 g of Al2O3 requires 107.92 g of Al

So, Al required to produce 45.0 g of Al2O3 = 45.0 x 107.92 / 168.03

= 28.9 g of Al

Mass is the amount of matter in the physical body. It is also a measure of body inertia, resistance to acceleration when a net force is applied. An object's mass also determines the strength of gravity on other objects. The SI base unit of mass is the kilogram.

mass. A quantitative measure of inertia in physics, a fundamental property of all matter. In effect, it is the resistance that an object offers to changes in velocity or position when a force is applied. The greater the mass of an object, the smaller the change caused by an applied force. In mathematics, mass refers to the amount of matter in an object. Mass is commonly measured by the weight of an object. The more stuff you have, the heavier it will be. For example, mice have more matter than ants, so mice have more mass.

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If the reaction occurs with an 82. 4% yield, what mass of aluminum should be reacted with excess oxygen to produce 45. 0 grams of al2o3?

1.08 x 10²¹ molecules of methionine are present for every 1.0 mole of glycine in the sample.

Given data -

Glycine in the sample = 1.0 mole

Avogadro's number = 1.8 x 10⁻³ moles (we know)

To find the number of molecules of methionine , multiply the molar ratio by the Avogadro's number.

Number of molecules = Avogadro's number x molar ratio

                                     = (1.8 x 10⁻³ moles) x (6.02 x 10²³ molecules/mole)

                                     = 1.08 x 10²¹

Methionine is an essential amino acids for human. For the growth of new blood vessels and for he supplementation, it is an important  amino acid. Too much methionine reslts in the damage to the brain and might be fatal.

Glycine is also an amino acid which has only one single hydrogen as its side chain. It is used in the treatment of some rare metabolic disorders and schizoprenia, stroke, etc.

Glycine is responsible to reduce the levels of methionine in the blood. Glycine is considered a precursor for many necessary metabolites such as purines, glutathione, creatinine and porphyrins. It acts as a neurotransmitter in CNS.

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If this molecule of dna originated as a linear molecule with a linking number (l) of 30, which was then circularized and unwound, the l for the unwound circular molecule would be 28.

As unwound circular DNA would result in a reduction of 2 linking numbers, the answer should be 28, since the linking number is constant for a closed supercoiled DNA molecule.

30 - 2 = 28

Nucleotide molecules are the building blocks of DNA. Each nucleotide consists of three parts: a sugar molecule, a nitrogen base, and a phosphate group, which is made up of one phosphorus atom bound to four oxygen atoms. The "letters" that make up the genetic code of our DNA are adenine (A), thymine (T), guanine (G), and cytosine (C), which are the four different types of nitrogen bases.

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The composition, in atom percent, of an alloy that consists 90.5 wt Ag and 9.5 wt Cu is 84.5% and 15.2%.

Here, the lever rule is used to determine the composition of co-existing phases which are, Ag and Cu, of an alloy.

The given data is :

To calculate composition of silver, expression used is,

  C(Ag) =                W(Ag) × M(Cu)                 x 100

                ( W(Ag) × M(Cu) + W(Cu) × M(Ag) )

Substituting the values in the above expression,

  C(Ag) =                ( 90.5 × 63.55 )                x 100

                    ( 90.5 × 63.55 + 9.5 × 107.87 )

        C(Ag) = 84.5%

To calculate composition of copper, expression used is,

  C(Cu) =                W(Cu) × M(Ag)                  x 100

                ( W(Ag) × M(Cu) + W(Cu) × M(Ag) )

Substituting the values in above expression,

  C(Cu) =             (9.5 × 107.87)              x 100

                ( 90.5 × 63.55 + 9.5 × 107.87 )    

        C(Cu) = 15.2%

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The molarity of the solution is 0.528 mol/L.

Given,

Molarity = 0.0480 LiF.

Density = 1.10 g/ml

0.0480 moles of LiF are present in 1 kg of solvent.

Mass of 0.0480 moles of LiF = zero.0480 mol × 26 g/mol = 1.248 g

Mass of the answer (m)=  1 kg (solvent) + 1.248 g(solute)

m = a thousand g + 1.248 g = 1001.248 g

locating the quantity of the solution,

extent = Mass / density

setting the values of mass and density, we get the quantity,

quantity = 910.2254 mL or, 0.9102254 L

The molarity of the solution is the moles of the compound in a single liter of solutions.

Molarity = mass of compound/ molar mass × volume(L)

via placing the values we get,

Molarity = zero.528 mol/L

as a result the molarity of the answer is zero.528 molar.

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2 molecules of three carbon pyruvic acid is formed from one molecule of glucose (6-carbon) at the end of glycolysis. There is a net gain of 8 ATP molecules as a result of glycolysis.

Glycolysis is a cytoplasmic pathway which breaks down glucose into two three-carbon compounds and generates energy. Glucose is trapped through phosphorylation, with the assist of the enzyme hexokinase. Adenosine triphosphate (ATP) is used in this reaction and the product, glucose-6-P, inhibits hexokinase.

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Answer:

Explanation:

a. 82,000

b.Metric unit

Suppose that the gene for a protein 500 amino acids in length undergoes a mutation. If the mutation causes the synthesis of a mutant protein in which just one of the 500 amino acids is incorrect.

The mutation is a condition in which there are changes in the DNA and gene. These changes are due to genetic mutation and other bio factors and radiation.

The protein may be folded incorrectly. And the protein will not attain its old structure. Because denature is an irreversible process and does not get the structure of its before.

Thus, the statement is incorrect.

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Atomic # / Symbol / Name / Melting Point (ºC) / Boiling Point (ºC)

1        /         H    /    Hydrogen   /   -259.14   /   -252.87

2      /        N      /   Nitrogen      /   -209.86    /   -195.8.

3     /       NH3   /  Compound Ammonia  /  -77.7  /  -33.3

For Hydrogen, the Melting point is -259.14, while for the Nitrogen it's -209.86. And the boiling point for Hydrogen is -252.87, while for the Nitrogen it's -195.8. The difference is that Hydrogen has less temperature in melting and boiling points, while Nitrogen has more. And for the Ammonia, this one has the most temperature, being at -77.7 degrees celsius for melting point, which is -107.9°F, and being at -33.3 degrees celsius, which is -28.01°F

In the mass spectrum of pentane, the presence of a peak with an m/z = 57 most likely is due to the loss of methyl radical.

The electromagnetic spectrum is the gamut of electromagnetic radiation's frequencies, together with the corresponding wavelengths and photon energies. Electromagnetic waves having frequencies between 1 hertz and 1025 hertz are included in the electromagnetic spectrum. This translates to wavelengths that range from several hundreds of kilometers to only a small portion of an atomic nucleus in size.

Each of the bands that make up this frequency range has a unique name for the electromagnetic spectrum that it contains. The electromagnetic spectrum is made up of radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays, starting at the low frequency (long wavelength) end and ending at the high frequency (short wavelength) end.

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The property that the upset stomach reliever and the baking ingredients have in common is baking soda or sodium bicarbonate. They used to bake cakes or biscuits and relive in acid reflex.

Sodium bicarbonate is the salt of carbonate, and it is commonly known as baking soda. The chemical formula is NaHCO₃. It is used in baking, cleaning, and acidity relieving.

Thus, baking soda, also known as sodium bicarbonate, is an ingredient that both the remedy for upset stomach and the baking ingredients share. They used to make biscuits or cakes and indulge in acid reflex.

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