TRUE/FALSEin a reaction with an enzyme has a low or small activation energy

Answer:

Is an absolute temperature scale with zero at absolute zero

Explanation:

everything can be found in the picture

The chemical formula for francium phosphide is FrP.

A chemical formula is described as a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.

There are three main types of chemical formulas which include :

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Two mean unpaired is the type of hypothesis test you should use. If the caloric contents were normally distributed, and that a level of significance of 1% be used you should use two mean unpaired hypothesis test. Option B is correct.

13: Since you have two independent groups (1.5 moles per liter and 2.0 moles per liter), and you want to compare the means of these two groups, you would use a Two mean unpaired hypothesis test. This test compares the means of two independent groups to determine if there is a significant difference between them.

Therefore, Option B is correct.

15: Since you have two independent groups (Type A milk and Type B milk) you would also use a Two mean unpaired hypothesis test.

Therefore, Option B is correct.

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The metabolism of 28 grams of carbohydrates releases 112 kilocalories of energy.

There are 4 kilocalories of energy released per gram of carbohydrates metabolized. Therefore, to calculate the total energy released from the metabolism of 28 g of carbohydrates, we can simply multiply 28 g by 4 kcal/g, which equals 112 kilocalories.

It's important to note that not all carbohydrates are created equal in terms of their impact on energy release. Simple carbohydrates, such as those found in sugar and processed foods, can cause rapid spikes and crashes in blood sugar levels, leading to inconsistent energy levels throughout the day.

On the other hand, complex carbohydrates found in whole foods like fruits, vegetables, and whole grains are digested more slowly, leading to a more sustained release of energy over time.

Additionally, factors such as an individual's metabolic rate and level of physical activity can impact the amount of energy released from carbohydrate metabolism. Those with a faster metabolism or who engage in regular physical activity may burn through carbohydrates more quickly, leading to a greater overall release of energy.

Overall, while the specific amount of energy released from carbohydrate metabolism may vary based on individual factors and the specific type of carbohydrate being consumed, the general guideline of 4 kcal/g can be a helpful starting point for understanding the energy potential of this important macronutrient.

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Answer:

icecream-decreasing

air,cone-surounding

heat is -entering-the system

the potential energy-increasing

If PCR reaction is performed but accidentally only added one of the two primers there will only be one DNA strand produced.

What is PCR?

PCR stands for polymerase chain reaction. It is a test to find genetic material from a particular organism, like a virus. If you have a virus at the time of the test, the test will reveal its presence.

What occurs in PCR when only one primer is used?

The procedure is known as "asymmetric PCR" if only one primer is employed. As only one new copy is created per cycle and only one strand of the double-stranded DNA will be amplified, exponential amplification cannot be achieved.

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Answer:

covalent bond

the answer is short I don6 know why brainly is telling me it needs to be 20 characters long

O3 is called as Ozone. There are two resonance structure in O3 that contribute equally to the overall hybrid structure of the molecule.

Resonance structures can be drawn in different ways. In resonance structures, one can only change the location of bonds and electron pairs and not the amount or type of atoms. Ozone is an inorganic molecule with the formula O₃. Ozone is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O₂. That breaks down in the lower atmosphere to O₂. It  is used in many industries. Ozone is used for purifying air and drinking water in industrial waste treatment, oils, bleaching and waxes and to make other chemicals. Two resonance structures can be drawn for ozone. The location of the double bond changes in the structure. Both the resonance structures of ozone are stable.

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Answer:

Neutrons, Atomic Number, Atomic Mass

Explanation:

The Atomic mass is used to calculate the number of Neutrons in an atom.

Every atom is composed of Protons and Neutrons forming a tight compact nucleus orbited by electrons. The Atomic number of an element tells how many Protons the nucleus has. This is important because it determines how many electrons the atom has and consequently, its chemical properties. The Atomic mass (rounded to the nearest whole number) is the sum of the Protons and Neutrons in the elements nucleus, since their masses are nearly identical (Neutrons have one electron worth more mass than Protons). You subtract an element's Atomic number from its Atomic mass and you get the number of neutrons the element has in the nuclei of its atoms.

In a neutralization reaction, water is always formed. This is because a neutralization reaction involves the reaction of an acid and a base to form a salt and water.

The acid donates a hydrogen ion (H+) and the base donates a hydroxide ion (OH-) to form water (H+ + OH- -> H2O) and the remaining ions combine to form a salt. The salt formed depends on the specific acid and base used in the reaction. Therefore, the correct answer is: water.

Water is a transparent, colorless, odorless, and tasteless liquid that is essential for most forms of life. It is a chemical compound with the formula H2O, meaning it is made up of two hydrogen atoms and one oxygen atom, held together by covalent bonds.

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Answer: Xenon- 144

Explanation: It's D

The mechanism of dehydration of 1-methylcyclohexanol can depend on several factors such as the reaction conditions (temperature, concentration, presence of catalyst, etc.) and the structure of the starting material.

However, in general, the dehydration of 1-methylcyclohexanol is expected to proceed via an E1 mechanism rather than an E2 mechanism. This is because the 1-methylcyclohexanol molecule has a bulky substituent (methyl group) attached to the carbon bearing the leaving group (hydroxyl group). The steric hindrance created by this bulky group makes it difficult for the nucleophile to approach the carbon and attack the leaving group simultaneously, which is a characteristic of the E2 mechanism.

In contrast, the E1 mechanism involves the formation of a carbocation intermediate, which is favored when the leaving group is attached to a tertiary carbon. The carbocation can be stabilized by neighboring alkyl groups, which in this case, are present in the 1-methylcyclohexanol molecule.

Therefore, the dehydration of 1-methylcyclohexanol is more likely to proceed via an E1 mechanism, although the reaction conditions and other factors can still influence the mechanism.

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The mass of 4.50 x 10^22 atoms of gold, Au, is 14.7 g.

To find the mass of 4.50 x 10^22 atoms of gold (Au), we need to use the following steps:

1. Determine the molar mass of gold (Au). From the periodic table, the molar mass of gold is 197 g/mol.

2. Calculate the number of moles of gold atoms by using Avogadro's number (6.022 x 10^23 atoms/mol). Divide the number of atoms (4.50 x 10^22) by Avogadro's number:

  (4.50 x 10^22 atoms) / (6.022 x 10^23 atoms/mol) = 0.0748 mol

3. Multiply the number of moles by the molar mass to get the mass of gold atoms:

  (0.0748 mol) x (197 g/mol) = 14.7 g

So, the mass of 4.50 x 10^22 atoms of gold (Au) is 14.7 g.

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Answer:

option first is the right answer

Crystallization of sugar in a syrup can be avoided by adding inverted sugar. Invert sugar is a mixture of glucose and fructose, produced from sucrose. It is produced by hydrolysis of sucrose by heating with water and an acid such as lemon juice, vinegar or cream of tartar.

By adding invert sugar to a syrup, it reduces the amount of sucrose present in the solution and promotes the formation of glucose and fructose. This causes the solution to become more saturated and the syrup less likely to crystallize. Invert sugar is often used in the production of confectionery, ice cream, and other sweets.Inverted sugar can also be used to improve the texture and quality of baked goods. It is often used in cake recipes to enhance the flavor and increase the shelf life. It can also be used as a substitute for honey or corn syrup in recipes that require a liquid sweetener.In conclusion, the addition of invert sugar helps to prevent crystallization of sugar in syrup. Invert sugar is a mixture of glucose and fructose produced from sucrose by hydrolysis.

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The standard potential (E°) for 2 Sn²⁺(aq) + O₂(g) + 4 H⁺(aq) → 2 Sn⁴⁺(aq) + 2 H₂O(ℓ) reaction is 1.20V. The standard potential of a half-cell reaction is known as standard electrode potential or standard reduction potential. The half-cell is a reduction half-cell where a half-reaction reduction occurs.

The reduction half-cell measures the relative potential of a single electrode at equilibrium. The standard potential of a cell is the potential difference measured when two half-cells, known as electrodes, are connected through a salt bridge and are at equilibrium, with one being a standard hydrogen electrode and the other being the electrode whose potential is being calculated.

The direction of the electron flow from the electrode being analyzed to the hydrogen electrode is used to determine the sign of the standard potential. The Nernst Equation is used to calculate the voltage of an electrode where the concentrations of ions differ from standard conditions. The Nernst equation may be used to compute cell voltage under nonstandard conditions.

E is the cell voltage, R is the gas constant (8.314 J K⁻¹ mol⁻¹), T is the temperature (Kelvin), z is the number of moles of electrons, F is Faraday's constant (96,485 C/mol), and Q is the reaction quotient. The relationship is as follows: E = E° − (RT/zF)lnQ

Where E° is the standard cell potential, R is the ideal gas constant, T is temperature, z is the number of moles of electrons, F is Faraday's constant, and Q is the reaction quotient.

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Answer:

subject?

Explanation:

To calculate the molarity of a solution, we need to divide the moles of solute by the volume of the solution in liters. Here's how we can calculate it step by step:

Convert the mass of Na2CrO4 to moles:

  The molar mass of Na2CrO4 can be calculated by adding the atomic masses of each element:

  Na: 22.99 g/mol x 2 = 45.98 g/mol

  Cr: 52.00 g/mol

  O: 16.00 g/mol x 4 = 64.00 g/mol

  Total molar mass = 45.98 g/mol + 52.00 g/mol + 64.00 g/mol = 161.98 g/mol

  Now, we can calculate the moles of Na2CrO4 by dividing the given mass by the molar mass:

  Moles of Na2CrO4 = 12.9 g / 161.98 g/mol ≈ 0.0795 mol

Convert the volume of the solution to liters:

  The given volume is 720 mL. We need to convert it to liters by dividing by 1000:

  Volume of solution = 720 mL / 1000 mL/L = 0.720 L

Calculate the molarity:

  Molarity (M) = Moles of solute / Volume of solution in liters

  Molarity = 0.0795 mol / 0.720 L ≈ 0.11 M

Therefore, the molarity of the solution prepared by dissolving 12.9 g of Na2CrO4 in enough water to produce a solution with a volume of 720 mL is approximately 0.11 M.

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Answer:

Mitochondria

Explanation:

Glucose in an energy molecule contained in carbohydrate food substances. The end product of the digestion of carbohydrate is glucose which is broken down to produce energy.

The sequence of breakdown of glucose is as follows; In the first step, 6-carbon glucose is broken down into two molecules of  3-carbon pyruvic acid. This occurs in the cytoplasm of the cell. It is an anaerobic process.

In the second step which occurs in the mitochondrion, each of the molecules of pyruvic acid is now oxidized to carbon dioxide and water and energy is produced in the process.

Answer:

Its B all the others arent true and also dont make any sense

Explanation:

Sodium has a lower ionization energy than magnesium describes why sodium reacts vigorously than magnesium chloride.

Therefore, sodium is more reactive than magnesium chloride because of lower ionization energy.

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Dates are collected carefully and with a lot of laborious work, much as how they are cultivated. After adding water and filtering the homogenized result with a cellulose filter aid, date fruits are removed using a wet grinding process.

The polysaccharide cellulose, an organic molecule with the formula n, is made up of a linear chain of several hundred to many thousands of D-glucose units that are covalently bonded.

Plant cell walls include the carbohydrate cellulose. The structure of the carbohydrate is polysaccharide. A lengthy chain of many sugar units joined by chemical bonding makes up a polysaccharide. Examples of polysaccharides include starch, chitin, glycogen, cellulose, and glycogen.

Use of a reach lift varies greatly depending on the size of the trees. This lift carries an employee up the trees to gather the date bunches. The filtering aid might be date pits. Before filtering, a fermentation may be performed.

Thus, Dates are collected carefully and with a lot of laborious work, much as how they are cultivated.

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Answer:

\(M_{acid}=3.57M\)

Explanation:

Hello there!

In this case, since this acid-base neutralization is performed in a 1:2 mole ratio of acid to base as the former is a diprotic acid (two hydrogen ions in the molecule), we can write the following equation:

\(2M_{acid}V_{acid}=M_{base}V_{base}\)

In such a way, we can solve for the molarity of the acid, given the molarity and concentration of the NaOH base and the volume of the acid:

\(M_{acid}=\frac{M_{base}V_{base}}{2V_{acid}}\)

Thus, we plug in the given data to obtain:

\(M_{acid}=\frac{38.70cm^3*1.90M}{2(10.30cm^3)} \\\\M_{acid}=3.57M\)

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Answer:

25 protons, 25 electrons, 30 neutrons. ......... manganese is the identity

Explanation;

x = atomic number -# of protons

The number of neutrons = x + 5

The mass number (sum of protons + neutrons) = 55.

x + (x + 5) = 55

2x + 5 = 55

2x = 50  

x = 25; atomic number 25 = manganese (Mn)

so ;

25 = Protons

30=Neutrons  

25=Electrons

The x = (0.283 - 0.007)/0.0182≈ 14.53 μg.

Therefore, the quantity of protein in the solution that has an absorbance of 0.338 is 14.53 μg.

The problem is to determine the quantity of protein in a solution that has an absorbance of 0.338. A blank solution has an absorbance of 0.055. The calibration curve has the form of a straight line with the equation

A=0.0182x+0.007

where A is the corrected absorbance of the solution and x is the quantity of protein in the solution in units of micrograms (μg).

To solve the problem, we need to use the equation of the calibration curve given above. But first, we need to find out the corrected absorbance of the sample solution.

The corrected absorbance is the difference between the absorbance of the sample solution and the absorbance of the blank solution.

This is given by:Corrected absorbance

= Absorbance of sample solution - Absorbance of blank solution

= 0.338 - 0.055

= 0.283 μg

Now, we can use the equation of the calibration curve to find out the quantity of protein in the solution.

This is given by:x

= (A - b)/m

Where,x

= quantity of protein in the solution A

= corrected absorbance of the sample solutionb

= intercept of the calibration curve

= 0.007m = slope of the calibration curve

= 0.0182. The x

= (0.283 - 0.007)/0.0182≈ 14.53 μg.

Therefore, the quantity of protein in the solution that has an absorbance of 0.338 is 14.53 μg.

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The total number of completely filled principal energy levels in an atom of argon in the ground state is three.

Argon has an atomic number of 18, which means it has 18 electrons in its electron configuration. The electron configuration follows the order of 1s², 2s², 2p⁶, 3s², and 3p⁶.

The principal energy levels are represented by the first number in the electron configuration (n = 1, 2, and 3 in this case). Each energy level can accommodate a certain number of electrons. The first energy level (n=1) can hold up to 2 electrons, the second energy level (n=2) can hold up to 8 electrons, and the third energy level (n=3) can hold up to 18 electrons.

In argon's ground state, the first energy level is filled with 2 electrons in the 1s² orbital, the second energy level is filled with 8 electrons in the 2s² and 2p⁶ orbitals, and the third energy level is filled with 8 electrons in the 3s² and 3p⁶ orbitals. All these energy levels are completely filled, and no more electrons can be added without moving to a higher energy level (excited state). Therefore, in an atom of argon in its ground state, there are three completely filled principal energy levels.

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Numerous genes: Multiple genes and environmental factors frequently interact to cause genetic diseases. Mutations in a single gene are what cause sickle cell anemia.

Anemia is a condition in which there are not enough healthy red blood cells in the body. Oxygen is transported throughout the body by red blood cells from the lungs. Fatigue, weakness, dizziness, coldness in the extremities, pale skin, and difficulty concentrating are all signs of a lack of these cells in the body. An underlying medical condition, such as an iron or vitamin deficiency or chronic disease, frequently causes anemia. The root cause of anemia will determine the course of treatment.

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