which o-glycosidic bond listed below is the most abundant or frequently used in amylose, amylopectin, and glycogen?

All of the amino acids could form a hydrogen bond with another amino acid in the chain to stabilize the secondary structure of a b-pleated sheet.

Protein is composed of amino acid linked with peptide bond.

Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.

In a beta-pleated sheet, hydrogen bonds are formed between carbonyl and amino groups of backbone (see the picture below).

Usually, amino acid proline is found in the edge strands in beta-sheets. Beta-branched amino acids valine, threonine and isoleucine and aromatic amino acid residues tryptophan, tyrosine and phenylalanine are found middle of beta-sheets.

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Answer:

9366.784 joules (J)

Explanation:

To calculate the amount of energy released when 43 grams of water cools from 70°C to 18°C, we need to use the specific heat capacity of water, which is 4.184 J/g·°C. The formula we use is:

Q = m * c * ΔT

-Q is the amount of heat energy released

-m is the mass of the substance

-c is the specific heat capacity of the substance, and ΔT is the change in temperature.

Substituting the given values into the formula, we get:

Q = 43 g * 4.184 J/g·°C * (70°C - 18°C)

Q = 43 g * 4.184 J/g·°C * 52°C

Q = 9366.784 JTherefore, the amount of energy released when 43 grams of water cools from 70°C to 18°C is 9366.784 joules (J).

Answer:

9366.784 joules

Explanation:

sorry that im a lil late

First of all, Z is unknown. I hope it is a mistake.

        Now, it is given that the element X has nineteen electrons. This proves that X is actually Potassium.

        As per the periodic table, both Potassium and Lithium belongs to group 1 as their valency is 1 because of the presence of only one electron in the outermost shell of electrons i.e., they lose an electron during a chemical reaction to form a stable compound. Furthermore, both are metallic.

        Magnesium belongs to group 2 and hence its valency is two, which is different from potassium though it is metallic. Similiarly, bromine belongs to group 17 and gains one electron during a reaction in contrast to potassium.

( No internal links available for reference. For clarification, check the periodic table).

Answer:

It will become polar.

Explanation:

Look the image below. I know it's terrible, but I'll explain it:

ΔE is the electronegativity. The higher is the ΔE of a substance, the more it can attracts electrons.

Cl has more electronegativity than C and H. But it has, of course, the same amount of another Cl.

So, when we have a tetrahedral space disposition such as in the left draw, all the Cl cancels the others eletrostatic force. However, when we replace one Cl for H, then we will have a dipole moment pointing to the Cl who face the Hydrogen, as the right draw. The appearance of a resulting dipole indicates the existence of a polar compound.

The volume of a gas originally at standard temperature and pressure was recorded as 488.8 mL, the gas would occupy a volume of 5.97 mL at a pressure of 100.0 atm and temperature of -245.0 °C.

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P₁V₁)/T₁ = (P₂V₂)/T₂

where P₁, V₁, and T₁ are the initial pressure, volume, and temperature, respectively, and P₂, V₂, and T₂ are the final pressure, volume, and temperature, respectively.

We can first convert the initial temperature to Kelvin:

T₁ = 273.15 K (since it is at standard temperature)

Next, we can convert the final temperature to Kelvin:

T₂ = (-245.0 °C + 273.15) K = 28.15 K

We can then plug in the values and solve for V₂:

(1 atm x 488.8 mL) / 273.15 K = (100.0 atm x V₂) / 28.15 K

V₂ = (1 atm x 488.8 mL x 28.15 K) / (100.0 atm x 273.15 K) = 5.97 mL

Therefore, the gas would occupy a volume of 5.97 mL at a pressure of 100.0 atm and temperature of -245.0 °C.

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Answer: Taking measurements

Explanation:

Apex

169.71 minutes

Given

Rate of diffused of Hydrogen=5 gm/30 min

Required

The time required for SO₂

Solution

Graham's law: the rate of effusion of a gas is inversely proportional to the square root of its molar masses or  

the effusion rates of two gases = the square root of the inverse of their molar masses:  

\(\tt \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }\)

r₁=5gm/30 min

M₁=molar weight of H₂-hydrogen= 2 g/mol

M₂=molar weight of SO₂-sulfur dioxide= 64 g/mol

\(\tt \dfrac{5/30}{r_2}=\sqrt{\dfrac{64}{2} }\\\\\dfrac{5/30}{r_2}=4\sqrt{2}\\\\\dfrac{5}{30}=r_2.4\sqrt{2}\\\\r_2=\dfrac{5}{30\times 4\sqrt{2} }=\dfrac{\sqrt{2} }{48}\)

the time required (for the same amount=5 gm) :

\(\tt \dfrac{5}{x}=\dfrac{\sqrt{2} }{48}\rightarrow x=120\sqrt{2}=169.71 minute\)

Answer:(2)(0.76)9.8

Explanation:

I JUST DID IT ITS C APEX LEARNING

The ideal gas law can be used to determine the gas's new pressure. According to the ideal gas law, pressure times volume equals the amount of a gas in moles times the global gas constant times the temperature.

Pressure = (number of moles of gas times the universal gas constant times the temperature) divided by volume is the new equation we may use to calculate pressure.

Since there are an equal amount of moles of gas in this situation, we can use the following formula to determine the new gas pressure: Pressure is equal to (4.3 L times 839.0oC) divided by (766.9 torr times 0.38 L). We obtain a new pressure of 118.6 atm by simplifying.

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Answer: A: Explaining natural events using facts and data AND B:Developing theories using many lines of evidence

Explanation: trust me.

Answer:

One mole of H2O corresponds to 18 g .

Both sand and potting soil are mixtures because they both contains more than one type of substances. Both are composed of minerals and different substrates.

Mixtures are substance formed by the combination of two or more components. The mixtures can be homogenous or heterogenous. Homogenous mixtures contains only one phase.

Heterogenous mixtures are of components with different phases. Sand is an example of heterogenous mixture. The major component of sand is silicon dioxide. it also contains grains of other minerals.

Potting soil is a mix of soil and minerals used for plantation. It also known as potting compost since it contains wood products, vermiculates, clay etc. Therefore, potting soil is a mixture.

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Answer:

204.8g

Explanation:

The number of moles of a substance is related to its mass and molecular mass as follows:

mole (n) = mass (m) ÷ molar mass (MM)

According to this question, 3.50 moles of sodium chloride (NaCl) is added to a food.

Molar mass of NaCl = 23 + 35.5

= 58.5g/mol

Using mole = mass/molar mass

Mass = molar mass × mole

Mass = 58.5g/mol × 3.5mol

Mass = 204.75

Mass = 204.8grams.

Therefore, 204.8grams of NaCl or common salt was added to the food.

Answer:

the answer is C

Explanation:

Answer:C B

Explanation:

Suppose 5.0 mol of antimony (III) fluoride is added to 10.0 mol of carbon tetrachloride, and from the 100% reaction there are the equivalents of 0 moles of SbF₃, 5.0 moles of SbCl₃, 0 moles of CCl₄, and 15.0 moles of CClF₂.

A balanced reaction is one where the reactants and products are present in equal amounts, and if the 100% reaction takes place, then the reactant sides have 1 mol of SbF₃ and 3 mol of CCl₄ that make the product of 1 mol of SbCl₃ and 3 mol of CClF₂. After the 100% reaction, all the reactants get converted into the product. The complete reaction is the below.

SbF₃ + 3CCl₄ → SbCl₃ + 3CClF₂

Hence, suppose  5.0 mol of antimony (III) fluoride is added to 10.0 mol of carbon tetrachloride, and from the 100% reaction there are the equivalents of 0 moles of SbF₃, 5.0 moles of SbCl₃, 0 moles of CCl₄, and 15.0 moles of CClF₂.

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Answer:

save my photo

who knows you might like it :>

Answer:

1.2 × 10^22 atoms.

Explanation:

Firstly, cations refers to the positively charged atom in the ionic compound, which is Na+.

Given the mass of NaCl as 1.17g, the number of moles of NaCl can be calculated this:

Molar mass of NaCl = 23 + 35.5

= 58.5g/mol

Mole = mass/molar mass

Mole = 1.17/58.5

Mole = 0.02moles

Using Avagadro's number, 6.022 × 10^23 atoms of Na+ are in 1 mole of NaCl.

In 0.02 moles of NaCl, there are 0.02 × 6.022 × 10^23 of Na+

0.1204 × 10^23 atoms

1.2 × 10^22 atoms of Na+ (cation)

The statement "Reaction of heating potassium permanganate produces potassium manganate" is false.

The reaction of heating potassium permanganate (KMnO₄) does not produce potassium manganate (K₂MnO₄). Instead, it undergoes a thermal decomposition reaction, resulting in the formation of different products.

When heated, potassium permanganate decomposes into potassium manganate (K₂MnO₄), manganese dioxide (MnO₂), and oxygen gas (O₂).

The reaction can be represented as follows:

2 KMnO₄(s) → K₂MnO₄(s) + MnO₂(s) + O₂(g)

Therefore, heating potassium permanganate leads to the formation of potassium manganate, along with manganese dioxide and oxygen gas. The color change from purple to green observed during the reaction is due to the formation of potassium manganate.

However, it is important to note that potassium manganate is not the sole product of the reaction but one of the products alongside manganese dioxide and oxygen gas.

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Complete question :

Reaction of heating potassium permanganate produces potassium manganate. T/F

I believe the worst form of pollution is fissile fuels because coal takes millions of years to form and why burn something that takes so long to make.

you can put fences around them

Answer: Fences.

Explanation:

Sometimes dunes become damaged because of vehicle and foot traffic, and sometimes they are damaged because of very strong storms. Damaged dunes can become unstable, but thankfully there are steps we can take to restore them. Planting dune vegetation such as sea oats can help build, anchor, and stabilize sand dunes ("Building Back"). The plants help to trap wind-blown sand, making the dune stronger. Ideally, the dune should be 80 percent covered in vegetation. In addition, installing sand fences can help protect dunes by restricting access and preventing foot and vehicle traffic. 

Hope this helped!

Answer:

b) 2H+(aq) + 2C1-(aq) + Zn(s) → H2(g) + Zn2+(aq) + 2Cl-(aq)

Explanation:

The equation is given as;

2HCl(aq) + Zn(s) + H2(g) + ZnCl2(aq)

In writing an ionic equation, only the aqueous compounds dissociates into ions. This means HCl and ZnCl2 would dissociate to form ions.

This is given as;

2H+  +  2Cl-  + Zn(s) --> H2(g) + Zn2+  + 2Cl-

The correct option is;

b) 2H+(aq) + 2C1-(aq) + Zn(s) → H2(g) + Zn2+(aq) + 2Cl-(aq)

Half life Of Radioactive Element is 18 days

Percentage of original sample remained after 108 days is 1.5625%

The amount of time needed for a reactant to achieve half of its starting concentration or pressure is known as the half-life of a reaction. The half-life for a first-order reaction is concentration-independent and stable over time.

It is denoted by the symbol ‘t1/2’ and is usually expressed in seconds.

Given;

t 1/2 = 18 days;

t = 108 days;

Amount of remaining radioactive element

R = \(\frac{Ro}{2^n}\), where n = \(\frac{t}{t1/2}\)

⇒n= 108/18

n= 6;

so,

\(\frac{R}{Ro}\) = \(\frac{1}{2^6}\)

= 0.015625

⇒ Percentage of original sample remained , \(\frac{R}{Ro}\) × 100 = 1.5625 %

Half life Of Radioactive Element is 18 days

Percentage of original sample remained after 108 days is 1.5625%

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Answer:

Your mom

Explanation:

The mass of KClO₃ that was decomposed in the given reaction by the ideal gas equation is approximately 7.19 grams.

Given:

Pressure (P) = 0.964 atm

Volume (V) = 0.65 L

Temperature (T) = 22 °C = 22 + 273.15 = 295.15 K

The ideal gas law: PV = nRT

Where:

P = Pressure in atm

V = Volume in liters

n = Number of moles

R = Ideal gas constant = 0.0821 L·atm/(mol·K)

T = Temperature in Kelvin

n = (PV) / (RT)

n = (0.964 atm) × (0.65 L) / (0.0821 L·atm/(mol·K) × 295.15 K)

n ≈ 0.0294 mol

2 moles of KClO₃ produce 1 mole of O₂. Therefore, the number of moles of KClO₃decomposed would be:

Moles of KClO₃= 2 × 0.0294 mol

Moles of KClO₃≈ 0.0588 mol

Molar mass of KClO₃= 122.55 g/mol

Mass of KClO₃= Moles of KClO₃× Molar mass of KClO₃

Mass of KClO₃≈ 0.0588 mol × 122.55 g/mol

Mass of KClO₃≈ 7.19 grams

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Answer:

You determine the net force of an object by adding up all of the individual forces.

Explanation:

If N is the number of forces acting on the body, the net force formula is:

\(F_{Net}\) = \(F_{1}\) + \(F_{2}\) + \(F_{3}\) ....+ \(F_{N}\)

Where \(F_{1}\), \(F_{2}\), and \(F_{3}\) as forces acting on a body.

When a body is at rest, the net force formula is given by

\(F_{Net}=F_{a}+F_{g}\)

Fa = Applied force and

Fg = Gravitational force.

Example:

A truck is standing still and a force of 70 N is applied on it. If the frictional force is 20 N, then what will be the net force?

Solution:

Given

Applied force Fa = 70 N

Frictional force Ff = 20 N

The net force formula is given by

FNet = Fa + Ff

FNet = 70 + (-20)

FNet = 50 N

Therefore, the net force is 50 N

A gas mixture containing oxygen, nitrogen, and He has a total pressure of 189.9 kPa. If PO2 = 104.6 kPa and PN2 = 13.0 kPa, PHe is 72.3 kPa.

Static pressure and velocity pressure are added to create total pressure. There is static pressure in a fluid that is not flowing. The pressure required to accelerate air from a zero velocity to a specific velocity that is proportional to the kinetic energy of the air stream is known as velocity pressure.

Consider the friction that exists between a fluid and the interior surface of a pipe. The fluid's density and velocity are used to compute the dynamic pressure: the total pressure in a mixture of ideal gases is the total of the partial pressures of the individual gases.

Total pressure = PO2  + PN2 + PHe

189.9 kPa = 104.6 kPa + 13.0 kPa + PHe

PHe = 72.3 kPa

Thus, A gas mixture containing oxygen, nitrogen, and He has a total pressure of 189.9 kPa. If PO2 = 104.6 kPa and PN2 = 13.0 kPa,PHe is  72.3 kPa.

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The fact that the colorless gas hydrogen reacts explosively when ignited in air is a chemical property. A chemical property is a characteristic of a substance that describes its ability to undergo a chemical change or reaction. In this case, hydrogen reacts with oxygen in the air to form water vapor, which is accompanied by an explosive release of energy.

When hydrogen is ignited, the chemical reaction between hydrogen and oxygen takes place, resulting in the formation of water vapor. This reaction is known as combustion. The release of energy in the form of an explosion is a clear indication of a chemical change occurring. Physical properties, on the other hand, describe the characteristics of a substance that can be observed without changing the chemical composition of the substance.

In summary, the ability of hydrogen to react explosively when ignited in air is a chemical property, as it involves a chemical change and the formation of a new substance (water vapor).

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An atom of Nickel (Ni) has most likely bonded with an atom of sulfur (S) to form a solid, crystal-like substance with a high boiling point. The correct option is c. S.
Nickel and sulfur can form a compound known as nickel sulfide (NiS), which is a solid, crystal-like substance with a high boiling point. This compound is used in various industrial processes, including the production of stainless steel and other alloys.
In contrast, the other options (Ca, Fe, and Li) are less likely to form a solid, crystal-like substance with a high boiling point when bonded with nickel. Therefore, the correct answer is c. S.Out of the given options, Fe (iron) is the most likely atom to form a solid, crystal-like substance with Nickel (Ni) that has a high boiling point. This is because iron and nickel are both transition metals and have similar electronic configurations. They can form a solid solution or alloy together, known as stainless steel, which has a high melting and boiling point due to its strong metallic bonding.

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Answer:

[2]HBr + [ ] Ba(OH)2 ➖ [ ] BaBr2 + [2] H20

Hope it will help :)