Calculate the wavelength of light produced if an electron moves from n=6 state to n=5 state of an electron in a hydrogen atom.

Lactate dehydrogenase isoenzymes are produced by all the following tissues except the bone marrow.

The body's numerous tissues, including the liver, heart, muscles, kidneys, lungs, and blood cells (erythrocytes), all manufacture lactate dehydrogenase (LDH) isoenzymes.

The electrophoretic mobility of the various LDH isoenzymes that are produced by various tissues can be used to identify and monitor specific medical problems. It is not produced in the bone marrow.

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Answer:

3787500 Torr

Explanation:

1 Pascal = 0.0075 Torr

So:

5.05x10^8 Pa --- x

1 Pa --- 0.0075 Torr

x = 5.05x10^8 × 0.0075

x = 3787500 Torr

The compound that have been shown in the dot structure is H₂S.

We know that the dot structure is the structure of the compound that can be written by the inclusion of dots We know that the dots that can be found in structure are used to show the electrons in the compound.

We can see that the compound is made of two atoms of hydrogen and one atom of sulfur and these atoms of hydrogen  each share two electrons with the sulfur atom as we can see from the dot structure that is represented here.

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Answer:

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

\(P_1V_1 = P_2V_2\)

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the new pressure we have

\(P_2 = \frac{P_1V_1}{V_2} \\\)

We have

\(P_2 = \frac{50 \times 2}{200} = \frac{100}{200} = \frac{1}{2} \\ \)

We have the final answer as

Hope this helps you

Answer:

a) volume₁ = 444.6 L  

b) Volume₂ = 306 L  and percentage Error = 31.2%

Explanation:      

Given that;

the solution contains 35.0 wt% H₂SO₄

A quantity of the 35% solution is needed that contains 195.5 kg of H₂SO₄

Lets say mass of solution containing 195.5 kg H₂SO₄ is 'A' kg

Now since the question saysm it is a 35% wt solution,

so

(35/ 100) × Akg = 195.5kg

0.35A = 195.5

A = 558.6kg

So A = 558.6 kg

therefore mass of the  solution is 558.6kg

a)

also Specific gravity is 1.2563

since density of water = 1kg/ L

density of solution = SG of H₂SO₄ × density of water

therefore density of solution = 1.2563 ×1kg/ L  = 1.2563 kg/ L

Now to calculate the required volume (L) of the solution

we say;

Volume of solution = mass / density

Volume = 558.6kg / 1.2563kg/L

Volume₁ = 444.6 L  

b)

Now If pure-component specific gravity is to be used,

Specific Gravity = 1.8255

which means Density will be  = 1.8255 kg/ L

Therefore will be

Volume = 558.6kg / 1.8255kg/L

Volume₂ = 306 L

To calculate the error

we say volume₁ - volume₂

Error = 444.6L - 306L = 138.6

So

Percent error = ( 138.6L / 444.6L) × 100

percentage Error = 31.2%

The pH of the solution or enzyme amylase affect is directly affected by fat digestion. Set has a neutral PH, but when fats are digested by lipase, they are converted into fatty acids. The presence of fatty acids can either decrease or stimulate the pH, resulting in an increase in the acidity of the solution. PATHWAY - Fat Digestion - Produre, - Fatty Acid Alkali Sodium Carbonate Increasing the pH

The enzyme alpha-amylase is in charge of digesting or breaking down starch. Crackers are a type of food that contains a lot of starch. When the salivary glands release starch, alpha-amylase begins digesting it in the mouth. It degrades starch into smaller chains of two or three glucose molecules.Proteins are enzymes that aid inside the speeding up of digestion, or the synthetic reactions that take place in our carcasses. Some substances are formed whereas others are broken. Enzymes are present in all living items. Enzymes are produced naturally by in out bodies. However, enzymes may also be found in factory - made products and food. Pepsin, for example, is an integral part of gastric secretions that aids in the breakdown of bits of food in the stomach. Similarly, the pancreatic amylase, which is found in saliva, gets converted starch into carbohydrates, which aids in digestion. The enzyme thrombin is used in medicine to promote wound healing.

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The value of Kc for the given reaction is 0.0579 (rounded to four decimal places).

The formula for the equilibrium constant, Kc, of a reaction is given by the ratio of the product of the concentrations of the products raised to their respective stoichiometric coefficients to the product of the concentrations of the reactants raised to their respective stoichiometric coefficients.

The stoichiometric coefficients are the coefficients in the balanced chemical equation.

To determine the value of Kc for the reaction given by the following chemical equation:N2(g) + 3 H2(g) ⇌ 2 NH3(g)

we first need to write the expression for Kc.

The expression for Kc is given by the following formula:Kc = [NH3]² / [N2][H2]³.

We are given the equilibrium concentrations as follows:[N2]eq = 2.66 M[H2]eq = 0.64 M[NH3]eq = 3.34 M

We can substitute these values into the expression for Kc and obtain the following:Kc = (3.34)² / (2.66)(0.64)³ = 0.0579 (rounded to four decimal places).

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The specific characteristics of the layers that make up the Earth's atmosphere affect the types of wavelengths that are reflected. Troposphere, stratosphere, and mesosphere are the three layers.

The stratosphere, which contains the ozone layer, is the next layer. The sun's dangerous UV light is absorbed by ozone, keeping it from reaching the surface of the Earth. Visible light and some infrared radiation can travel through this layer.

The mesosphere is located above the stratosphere, where the majority of meteoroids burn up as they enter the atmosphere of the Earth.

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The concentrations of the three gases at equilibrium will be approximately:

[CH₂Cl₂] ≈ 0.0688 M

[CH₄] ≈ 0.1622 M

[CCl₄] ≈ 0.1622 M

To solve this problem, we will use the given equilibrium constant (K) and the stoichiometry of the reaction to determine the concentrations of the three gases at equilibrium.

Given:

Equilibrium constant (K) = 10.5

Initial concentrations:

[CH₂Cl₂] = 5.51×10^(-2) M

[CH₄] = 0.178 M

[CCl₄] = 0.178 M

Let's assume x mol/L of CH₄ reacts and is converted to CH₂Cl₂ and CCl₄.

Using the stoichiometry of the reaction, we can set up the following expression for the equilibrium concentrations:

K = ([CH₂Cl₂]^2) / ([CH₄][CCl₄])

Substituting the given values:

10.5 = ((5.51×10^(-2) + x)^2) / ((0.178 - x)(0.178 - x))

Now, we need to solve this equation for x.

10.5(0.178 - x)^2 = (5.51×10^(-2) + x)^2

Simplifying and rearranging the equation:

10.5(0.031684 - 0.356x + x^2) = 0.00303301 + 0.11156x + x^2

0.331764 - 3.7364x + 10.5x^2 = 0.00303301 + 0.11156x + x^2

9.4864x^2 - 14.23796x + 0.32873199 = 0

Now, we can solve this quadratic equation to find the value of x. By solving the equation, we find that x ≈ 0.0158 mol/L.

Now, we can calculate the concentrations of the three gases at equilibrium:

[CH₂Cl₂] = 5.51×10^(-2) + x ≈ 5.51×10^(-2) + 0.0158 ≈ 0.0688 M

[CH₄] = 0.178 - x ≈ 0.178 - 0.0158 ≈ 0.1622 M

[CCl₄] = 0.178 - x ≈ 0.178 - 0.0158 ≈ 0.1622 M

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Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

The average atomic mass of the element is 12.0107 amu.

To calculate the average atomic mass of the element in question, we can use the following formula:

average atomic mass = (mass of isotope 1 x abundance of isotope 1) + (mass of isotope 2 x abundance of isotope 2)

where "mass of isotope 1" is the mass of the first stable isotope (13 amu in this case), "abundance of isotope 1" is the percentage of that isotope in the element (1.07% in this case), "mass of isotope 2" is the mass of the second stable isotope (12 amu in this case), and "abundance of isotope 2" is the percentage of that isotope in the element (98.93% in this case).

Substituting the given values in the formula, we get:

average atomic mass = (13 amu x 1.07%) + (12 amu x 98.93%)

average atomic mass = (0.1391 amu) + (11.8716 amu)

average atomic mass = 12.0107 amu

Therefore, the average atomic mass of the element is 12.0107 amu.

This means that on average, one atom of this element weighs 12.0107 atomic mass units (amu), which is slightly heavier than the most abundant isotope (12 amu) due to the presence of the less abundant isotope (13 amu). This concept is important in chemistry because the mass of atoms plays a crucial role in determining their chemical and physical properties. The knowledge of the average atomic mass of an element is important in a wide range of applications, including analytical chemistry, geochemistry, and nuclear physics.

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Answer: 4.5 moles

Explanation:

To understand how to solve this problem, you must understand the ratios written in this chemical equation.

The equation shows that 4 moles of Al forms 2 moles Al₂O₃. This creates the ratio 2:4 or \(\frac{2}{4}\)

To solve, you can set the two ratios to each other and cross multiply.

\(\frac{2}{4} = \frac{x}{9}\)

18 = 4x

x = 4.5 mol Al₂O₃

*both \(\frac{2}{4}\) and \(\frac{4.5}{9}\) can be simplified as \(\frac{1}{2}\), which verifies your answer*

Answer:

Which of the following describes the location of the polar climate zone? Near the North Pole and South Pole.

The claim that "GEE washing machine is more durable than Warp-pool and Sam's Sung washing machines" is based on the experimental data gathered from the test. The data shows that the GEE washing machine was able to run for a longer period of time before breaking down, compared to the Warp-pool and Sam's Sung washing machines. With only 1 month, 2 hours, and 32 minutes of running time, GEE washing machine outlived the other two brands, which were able to run for 10 days, 5 hours, and 3 minutes and 2 months, 13 hours, and 52 minutes respectively. This indicates that the GEE washing machine is more durable and can withstand more wear and tear compared to the other two brands.

6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

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Answer:   if it has to have a definite physical and chemical properties. Mixture is when two atoms combine but not chemically.

Explanation:

Explanation:

The balanced chemical equation for the reaction between permanganate (MnO4-) and oxalic acid (H2C2O4) in acidic solution is:

5 H2C2O4 + 2 MnO4- + 6 H+ → 2 Mn2+ + 10 CO2 + 8 H2O

From the balanced equation, we can see that 2 moles of permanganate (MnO4-) react with 5 moles of oxalic acid (H2C2O4). Therefore, the number of moles of permanganate used in the titration is:

moles of MnO4- = (1.000 x 10^-3 mol H2C2O4) x (2 mol MnO4- / 5 mol H2C2O4) = 0.400 x 10^-3 mol MnO4-

The volume of the permanganate solution used in the titration is 37.61 mL = 0.03761 L. Therefore, the concentration of the permanganate solution is:

Concentration = moles of MnO4- / volume of solution used

Concentration = (0.400 x 10^-3 mol) / (0.03761 L)

Concentration = 0.0106 M

Therefore, the concentration of the permanganate solution is 0.0106 M (molarity).

Answer:

First the aqueous solution of iodine is heated mildly and then collection of the iodine crystals is done from its vapors.

Explanation:

Iodine is one of the elements that can get recovered easily from a given solution by going through the process of mild heating. For doing this, first, the aqueous solution is heated mildly over a low flame with a dish placed over the flame. As the process of mild heating continues, the fumes of the iodine start to originate that slowly get condense around the dish's cooler parts.  

With condensation, the formation of pure iodine crystals takes place. These iodine crystals can now be extracted easily by a physical method.  

Answer:

Heat energy moves from the water to the ice cubes.

Explanation:

Heat energy moves from the water to the ice cubes, as water is at higher temperature than ice.

\(\underline\mathtt\colorbox{cyan}{Heat energy moves from the water to the ice cubes.}\)

Explanation:

That's why water cools and ice melts-

Answer:

108.6 g

Explanation:

First we use the PV=nRT formula to calculate the number of nitrogen moles:

Inputting the data:

Then we convert 2.5 moles of N₂ into moles of NaN₃, using the stoichiometric coefficients of the balanced reaction:

Finally we convert 1.67 moles of NaN₃ into grams, using its molar mass:

The gas law that is calculated with the pressure and volume variables at a constant temperature is Boyle's Law. Boyle's Law states that the pressure (P) of a gas is inversely proportional to its volume (V) when temperature (T) is held constant.

Mathematically, it is expressed as P₁V₁ = P₂V₂, where P₁ and V₁ represent the initial pressure and volume, and P₂ and V₂ represent the final pressure and volume.According to Boyle's Law, if the volume of a gas is reduced while keeping the temperature constant, the pressure will increase proportionally.

Similarly, if the volume is increased, the pressure will decrease. This relationship holds as long as the temperature remains constant throughout the process. Boyle's Law is one of the fundamental gas laws and provides insights into the behavior of gases under changing pressure and volume conditions at a constant temperature.

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Answer:

The answer is true.

Explanation:

The deeper you go the more water there's on top of you pushing down.

Answer:

True

Explanation:

Answer:

55.9 kPa

Explanation:

Respuesta:

0.13 mol

Explicación:

Paso 1: Escribir la ecuación química balanceada

3 Ba(NO₃)₂ + 2 H₃PO₄ ⇒ Ba₃(PO₄)₂ + 3 H₂O

Paso 2: Establecer la relación molar apropiada

La relación molar de Ba(NO₃)₂ a Ba₃(PO₄)₂ es 3:1.

Paso 3: Calcular cuantos moles de fosfato de bario se producen a partir de 0.38 moles de nitrato de bario

0.38 mol Ba(NO₃)₂ × 1 mol Ba₃(PO₄)₂/3 mol Ba(NO₃)₂ = 0.13 mol Ba₃(PO₄)₂

The mass of the sample in grams is 115.53 × \(10^{-3}\).

The weight of an atom has been its atomic mass. Although the kilogram is the standard international measurement of mass, the unified atomic mass unit, or Dalton, is frequently used to express atomic mass. One Da is equal to one-twelfth of the mass of a free carbon-12 atom in its ground state.

The quantity of material that makes up an element's atom, its atomic mass. It is stated as a multiple of 1.992646547 1023 gram, which is equal to one-twelfth of the mass of the carbon-12 atom, which has an atomic mass of 12 units. An element's atomic unit (amu), on the this measure, is equivalent to 1.660539040 1024 grams. The Dalton (Da) is yet another term again for atomic mass unit which commemorates the English chemist John Dalton.

Silver has an atomic mass of 107.87 g/mol.

There are 6.022 × \(10^{23}\) atoms in one mole of anything.

You have 6874 × \(10^{20}\) atoms of Ag.

So:

6.45 x \(10^{20}\) atoms × 1 mol/(6.022 x \(10^{23}\)) atoms × 107.87 grams Ag/mol

=    115.53 × \(10^{-3}\)grams

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