two disadvantages of series connection?​

Competitive inhibitors are molecules that bind to the active site of an enzyme and prevent the binding of the substrate. They compete with the substrate for binding to the enzyme's active site, and their binding can be reversible or irreversible.

When a competitive inhibitor is present, it binds to the active site of the enzyme and forms an enzyme-inhibitor complex. This complex prevents the substrate from binding to the active site and forming an enzyme-substrate complex. As a result, the rate of the reaction decreases, and the reaction may stop altogether if the concentration of the inhibitor is high enough.

The inhibition caused by a competitive inhibitor can be overcome by increasing the concentration of the substrate. This is because the substrate and the inhibitor compete for binding to the same active site, and increasing the concentration of the substrate increases the probability that it will bind to the active site and form an enzyme-substrate complex.

Overall, competitive inhibitors can be used to regulate enzyme activity and control chemical reactions in the body. They are also used in the development of drugs and pesticides to target specific enzymes and prevent unwanted chemical reactions.

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Taking into account the room temperature and pressure, there are 0.4167 moles in 10 dm³ of sulfur dioxide gas.

RTP refers to Room Temperature and Pressure. Pressure is 1 atm and Temperature is 298K. In this case, one mole of any gas has a volume of 24 dm³ or 24,000 cm³. This volume is called the molar volume of a gas.

In other words, the molar volume (the amount of space occupied by one mole) of any gas is 24dm³ (1 mol of gas molecules occupies 24.0 dm³).

Therefore, the amount of volume occupied by any gas can be calculated by multiplying the number of moles of gas by 24dm³:

Volume = Moles of gas× 24 dm³

So, the number of moles can be calculated as:

Moles of gas= Volume÷ 24 dm³

In this case, you know that volume if sulfur dioxide gas is 10 dm³. So, replacing:

Moles of gas= 10 dm³ ÷ 24 dm³

Solving:

Moles of gas= 0.4167

Finally, there are 0.4167 moles in 10 dm³ of sulfur dioxide gas.

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Answer:

the chemical element of atomic number 16, a yellow combustible nonmetal.

Explanation:

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Explanation:

A pale-yellow, brittle nonmetallic element that occurs widely in nature, especially in volcanic deposits, minerals, natural gas, and petroleum. It is used to make gunpowder and fertilizer, to vulcanize rubber, and to produce sulfuric acid.

Answer:

The Oxygen atoms in iron oxide have more mass than the iron atoms in pure iron

Explanation:

When iron rusts and forms iron oxide, the iron oxide has more mass than the iron because the iron atoms in iron oxide have more mass than pure iron.

Pure iron contains only iron atoms and nothing else. It is a pure substance.

Iron has an atomic mass of 56 while oxygen has an atomic mass of 16. It follows that iron has a greater mass than oxygen.

However, in iron oxide, iron combines with oxygen to form Fe2O3. There are two iron atoms and three oxygen atoms in Fe2O3.

Three oxygen atoms have a total mass of 48g while two iron atoms has a total mass of 112g.

It the follows that, when iron rusts and forms iron oxide, the iron oxide has more mass than the iron because the iron atoms in iron oxide have more mass than pure iron.

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Answer: b

Explanation:

CCCCCCCCCCCCCCCCCCCCCCCC

The amount of heat gained by the water is 500 calories. Thus, option D is correct.

Given:

Mass of water (m) = 100 g

Change in temperature (ΔT) = 30°C - 25°C = 5°C

The specific heat capacity of water (c) is approximately 1 calorie/gram°C.

Now, the amount of heat gained by the water,

Q = mcΔT

Where:

Q is the heat gained or lost by the substance

m is the mass of the substance

c is the specific heat capacity of the substance

ΔT is the change in temperature

Plugging in the values into the formula:

Q = 100 × 1 × 5

Q = 500 calories

Therefore, the amount of heat gained by the water is 500 calories.

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Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.

The proton number of an atom does not change when it becomes an ion. Only the electron number changes.

In its neutral state (before becoming charged), an atom should have the same number for protons and electrons.

Therefore, given the element has lost 3 electrons, gaining a positive charge of 3+.

The atomic number of an element is the same as its proton number.

Looking at a periodic table, we can see that the element with the atomic number 13 is aluminum.

To use the proper notation, we would use the atomic symbol of aluminum and place square brackets around it with the charge 3+:

[Al]³⁺

The liquid dispensed from a burette is called titrant. What is burette? A burette is a laboratory equipment used in analytical chemistry to dispense volumes of liquid precisely and accurately. A burette is used to deliver a variable, measured amount of liquid, and it is calibrated to enable a scientist to determine the volume of liquid it contains to an accurate level. What is titrant? Titrant is a liquid substance with a known concentration. Titrant is used in analytical chemistry to determine the concentration of an analyte (a chemical species under analysis). The amount of titrant required to react with a particular quantity of analyte is measured, and the concentration of the analyte is calculated from this titration.

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Answer:

Copper encompasses a relatively low softening point, around 1075 degrees C. You'll dissolve little sums with a blowtorch. To soften sufficient for casting you'll require a heater of a few kind. This require be small more than some of tin cans.

To select four species that can be identified as molecules from the given list, you should look for species that are composed of two or more atoms chemically bonded together. The correct options are:

1. CO (Carbon monoxide) - A molecule consisting of one carbon atom and one oxygen atom bonded together.
2. CO2 (Carbon dioxide) - A molecule consisting of one carbon atom and two oxygen atoms bonded together.
3. O2 (Oxygen) - A diatomic molecule consisting of two oxygen atoms bonded together.
4. CH3OH (Methanol) - A molecule consisting of one carbon, four hydrogen, and one oxygen atom bonded together.

Your answer: Four species that can be identified as molecules from the list are CO, CO2, O2, and CH3OH.

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Answer: The answer is B 1,3

The term hydration of an alkene is defined as the addition of water across a double bond.

The term hydration of an alkene is defined as the addition of water across a double bond. The process of hydration always yields an alcohol as -OH is aded to one of the carbon atoms in the doube bond.

The reaction commences with the attack of the -OH group by water and is completed by a proton from acid. The neutral organic product of the reaction of cycloheptene with water and sulfuric acid is shown in the image attached.

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Answer:

Toxic pollution

Explanation:

Gasoline is a harmful chemical

Answer:

Star is a cycles two

Sana maka tolong

In the synthesis of Friedel-Crafts products, hydrochloric acid is used as a catalyst to generate the reactive electrophilic species, which attacks the aromatic ring and leads to the formation of the desired product.

The HCl reacts with the Lewis acid catalyst (such as AlCl3) to generate a complex that can activate the electrophile and facilitate the reaction. Additionally, HCl is used to quench the reaction at the end by protonating the intermediates and generating the final product. Overall, the function of hydrochloric acid in Friedel-Crafts reactions is to enhance the reactivity of the system and promote the formation of the desired product.

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Answer:

0.11 M

Explanation:

The computation of molarity of the CH3COOH solution is shown below:-

\(M_2 = \frac{M_1V_1}{V_2}\)

Where,

\(M_1\) = Molarity of LioH = 0.0175

\(V_1\) = Volume of LioH = 18.5 ml

\(V_2\) = Volume of CH3COOH = 29.4 ml

Now, we will put the values into the formula

\(= \frac{0.0175\times 18.5}{29.4}\\\\ = \frac{0.32375}{29.4}\)

Which gives result

= 0.011 M

Therefore for computing the molarity of the CH3COOH solution we simply applied the above formula.

Answer: 0.11

Explanation:

The new volume of the gas sample will be 1.86 L at 288.5 K.

The volume of a gas sample can be calculated from the equation of Charles's law given below.

Where

V1 and T1 are the initial volume and temperature, and V2 and T2 are the final volume and temperature.

Rearranging the equation, we can find the final volume:

V2 = V1 * T2 / T1 = 1.95 L * 288.5 K / 301.5 K = 1.86 L

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In determining the greater source of error in the experimentally determined density of the metal cylinder, we need to consider the mass and the volume.

The mass and volume are both measured quantities, and any errors in these measurements can contribute to the overall error in the density calculation. However, in this case, the greater source of error is likely the volume measurement.

The volume of the metal cylinder is determined by measuring its dimensions, such as length, width, and height. These measurements are subject to uncertainties due to various factors, such as parallax errors or limitations of the measuring instrument. Even small errors in the measurements of length, width, or height can result in significant differences in volume when multiplied together.

On the other hand, the mass measurement of the metal cylinder is typically more precise and less prone to errors. Using a balance with a high level of accuracy, the mass can be measured directly without much uncertainty.

To minimize the error in the experimentally determined density, it is crucial to ensure accurate measurements of the volume. This can be achieved by using precise measuring instruments, taking multiple measurements, and averaging the results. Additionally, techniques like using a water displacement method can provide a more accurate volume measurement.

In conclusion, while both the mass and volume measurements contribute to the overall error in the experimentally determined density, the volume measurement is likely the greater source of error due to the inherent uncertainties in measuring dimensions accurately.

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To estimate the temperature increase in a rubber band when extended to ? = 8 at 20°C, we need to use the formula Q = mC?T, where Q is the heat absorbed by the rubber band, m is the mass of the rubber band, C is the heat capacity, ?T is the change in temperature.

First, we need to calculate the mass of the rubber band. We know that the density of rubber is ? = 1 g/cm?, and the volume of the rubber band when extended to ? = 8 is:

V = ?r²h = ?(0.4 cm)²(8 cm) = 1.01 cm³

Therefore, the mass of the rubber band is:

m = ?V = 1 g

Now, we can calculate the heat absorbed by the rubber band. When a rubber band is extended, it absorbs energy in the form of work done on it. The work done is:

W = F?x = k(?)?x²/2

where F is the force applied to the rubber band, ?x is the extension, and k(?) is the spring constant of the rubber band. For simplicity, let's assume that the force required to extend the rubber band is constant and equal to 1 N. Then:

k(?) = F/?x = 1/(8/100) = 12.5 N/m

The work done on the rubber band is:

W = k(?)?x²/2 = (12.5 N/m)(0.08 m)²/2 = 0.04 J

This work is converted into heat, which is absorbed by the rubber band. Therefore, Q = W = 0.04 J.

Finally, we can calculate the change in temperature of the rubber band using the formula:

?T = Q/(mC) = 0.04 J/(1 g)(2 J/g-K) = 0.02 K

Therefore, the estimated temperature increase in the rubber band when extended to ? = 8 at 20°C is 0.02 K.
To estimate the temperature increase in a rubber band extended to a stretch ratio (?) of 8 at 20°C, you need to use the provided information: the heat capacity (C) is 2 J/g-K, and the mass per unit length (?) is 1 g/cm. However, we do not have enough information to provide an accurate estimate. We would need to know the work done on the rubber band or any other energy-related parameter to calculate the temperature increase.

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Answer:

cation

Explanation:

An atom with more protons than electrons is a cation. An atom with more electrons than protons is an anion.

Answer:

A Cation should be the correct answer.

Explanation:

It will become a positively charged ion, which is known as a cation. This is because it loses an electron, so it becomes positively charged.

Currents are made by wind blowing over the water.

Currents created by wind are formed through the use of warm and cold air. The warm air becomes lighter through expansion, causing it to rise and transform into a warm air current. Cool air is heavier than the warm air, which makes it move to replace the warm air, thus forming a cool air current.

In short, currents are not made by wind blowing over water, but by the characteristics of warm and cool air acting on one another.

Additionally, the rest of the answers can easily be proven true.

Cold currents do cause nearby coastlines to become colder. This is because these winds blow into the coast and affect the temperature. The process also applies to warm air. Warm air can blow into the coastline and warm the area. (With this, both "Cold currents cause nearby coastlines to be colder," and "Warm currents cause nearby coastlines to be warmer," have been shown to be truthful.)

Oceans more more slowly than wind is also correct. The ocean is an uninterrupted surface which winds can peacefully blow across. This lack of disruption causes the winds to move quickly - much faster than even the ocean itself. The ocean('s) currents move slower than the winds. (Therefore, "Oceans move more slowly than wind," had been proven true.)

Oceans hold more heat than atmosphere on land has a simple explanation: the Sun. As we know, this humongous, fiery star we depend on for survival spreads its sunlight all over Earth. The oceans are no exception. The ocean(s) absorb(s) this sunlight and transform(s) it to heat and energy. Since water has a higher capacity for heat compared to air, it can store larger amounts of heat with less of a change in temperature (than air). (For that reason, "Oceans hold more heat than atmosphere on land," is indeed a factual statement.)

All of the options, apart from Currents are made by wind blowing over the water, have been proven true. With that being said, our answer is clear. (Hope this helps - have a lovely week!)

Answer:

currents are made by wind blowing over the water

Explanation:

In which direction does weather typically move? a. from east to west c. from north to south b. from west to east d. from south to north *this is the next question on the test and the answer is FROM WEST TO EAST*

Which of these describe a warm front?

Warm and cool air mass that are not strong enough to move one another

Cold air meets warm air, fast moving and stormy. Severe weather is likely.

Warm air meets cold air. Slow moving with less severe weather.

Ocean surface temperature is greater than 80F.

*these are the third question answers and there are no brainly answers online, so the answer to this one is, WARM AIR MEETS COLD AIR. SLOW MOVING WITH LESS SEVERE WEATHER.*

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Buffers tend to prevent dramatic changes in the pH when proton donors or proton acceptors are added to a solution.

A weak acid and its conjugate base, or a weak base and its conjugate acid, make up a buffer. The amount of acid or base that may be added to a buffer before the pH changes is known as the buffer capacity.

Blood bicarbonate, which keeps the body's internal pH stable, is an illustration of a buffer solution. Any proton acceptor is a base, while any proton donor is an acid. Amphiprotic refers to a material that can function as a proton acceptor or donor. The most prevalent amphiprotic material is probably water.

Therefore, buffers tend to prevent dramatic changes in the pH when proton donors or proton acceptors are added to a solution.

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Answer:

Yes very much so, especially gases

Explanation:

Solubility of gases decrease with increasing pressure. Be familiar with Henry's Law.

- Hope that helps! Please let me know if you need further explanation.

Answer:

Yes, it does.

Answer:

55°C

Explanation:

original is 20

after gaining heat is 75

75 - 20 = 55

Answer:

17242,5J

Explanation:

Given parameters:

Mass of water  = 75g

Initial temperature  = 20°C

Final temperature  = 75°C

Unknown:

Amount of heat absorbed  = ?

Solution

To find the amount of heat absorbed by water;

      H  = mcΔt

 m is the mass

  c is the specific heat capacity of water  = 4.18J/g°C

 Insert the parameters and solve;

       H  = 75 x 4.18 x (75 - 20)

       H  = 17242,5J

Answer:

Yes

Explanation:

Based on the graph, nuclear energy is one of the least contributors of CO2 emissions.

You would support this source of energy .

The example that is nonpolar is d. a molecule with no partial charges.

When the charges of the molecule are symmetrical and there are no partial charges, it indicates that the molecule is nonpolar.

Polar molecules have partial positive and negative charges on either end of the molecule.

This occurs as a result of the polarity of the molecule, which is created by the difference in electronegativity between the two atoms forming the bond.

The charge distribution on the molecule is unbalanced due to this polarity, with the electron density more concentrated around the more electronegative atom.

The measurement of the polarity of a molecule is based on the difference in electronegativity between the two atoms forming the bond.

The polarity of a molecule can be determined using various methods, including the dipole moment method, which measures the magnitude of the dipole moment of the molecule.

The dipole moment measures the charge distribution in the molecule and is measured in Debye (D) units, where 1 D = 3.336 × 10-30 Cm.

In conclusion, a molecule with no partial charges is nonpolar.

The other options such as a negative ion, a neutral ion, and a positive ion are polar molecules as they have partial charges on either end of the molecule.

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A line spectrum is to an element as a fingerprint is to a person. Just as each element has a unique line spectrum, each person has a unique fingerprint.

In other words, a line spectrum is a characteristic pattern of lines that are produced when the light emitted by an element is passed through a prism or diffraction grating. This pattern is unique to each element and can be used to identify the element, much like a fingerprint can be used to identify a person.

So, to sum it up, the line spectrum is like the "fingerprint" of an element, allowing us to identify it based on its unique pattern of lines.

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The molarity of pottasium hydroxide solution in the acid-base titration is 0.138M.

Molarity in chemistry refers to the concentration of a substance in solution, expressed as the number of moles of solute per litre of solution.

The molarity in an acid base titration procedure can be calculated as follows;

CaVa = CbVb

Where;

According to this question, the neutralization of 25.00 mL of a solution of KOH (potassium hydroxide) of unknown concentration required the addition of 22.60 mL of 0.1532 M (nitric acid).

22.6 × 0.1532 = 25 × Cb

3.46232 = 25Cb

Cb = 0.138M

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