HURRY FAST. It is known that complex carbohydrates provide more sustained energy over time than simple sugars such as sucrose. Complex carbohydrates are polysaccharides, which are long chains of smaller sugar molecules bonded together. Simple sugars are monosaccharides that contain only one molecule. Why do complex carbohydrates provide more energy over time versus simple carbohydrates? Complex carbohydrates have more chemical bonds to break than simple sugars, which takes longer for the body to digest and provides more units of energy for the body to use. Complex carbohydrates have bonds that contain more thermal energy than those in simple carbohydrates, which is released when they go through the digestive process. Complex carbohydrates provide Calories for the body while simple carbohydrates provide calories. Calories are bigger than calories and provide more energy. Complex carbohydrates take less energy to digest, which means that the body does not spend all of its calories digesting the food. This saves calories for the body to use later.

The treatment of benzene with br2/febr3 yields bromobenzene as the product instead of 5,6-dibromo-1,3-cyclohexadiene because of electrophilic aromatic substitution reaction.

Benzene is a highly stable, aromatic compound that does not undergo addition reactions like other unsaturated hydrocarbons. Instead, benzene undergoes substitution reactions, where one of the hydrogen atoms on the ring is replaced by another atom or group of atoms.

In the case of treatment with Br2/FeBr3, a bromine atom replaces one of the hydrogen atoms on the benzene ring to form bromobenzene. This is known as an electrophilic aromatic substitution reaction. The FeBr3 acts as a catalyst to generate the electrophile, Br+, which then attacks the benzene ring.

The stability of the benzene ring is maintained throughout the reaction, which is why bromobenzene is formed instead of 5,6-dibromo-1,3-cyclohexadiene.

Overall, the reaction can be summarized as follows:
Benzene + Br2/FeBr3 --> Bromobenzene + HBr

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Answer:

C

Explanation:

Answer C    Full moon occurs approx 2weeks after new moon

Answer:

Hello

so ur answer is

56.74L

Explanation:

thanks... hope it helps

Answer:

sidjnfjdueirb sidisjsiwijejdkdodif

Option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

The long-run equilibrium condition for perfect competition is that price (P) is equal to average total cost (ATC), which is also equal to marginal cost (MC), and marginal revenue (MR).

Option (d), P=ATC=MR=MC, best represents the long-run equilibrium condition for perfect competition. In perfect competition, firms operate at the minimum point of their average total cost curve, where price equals both average total cost and marginal cost. This condition ensures that firms are earning zero economic profit and are producing at an efficient level.

In the long run, if firms are earning economic profit, new firms will enter the market, increasing competition and driving prices down. Conversely, if firms are experiencing losses, some firms may exit the market, reducing competition and causing prices to rise. This process continues until firms reach a state where price equals average total cost, marginal cost, and marginal revenue, ensuring a long-run equilibrium.

Therefore, option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

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Answer:

B

Explanation:

According to the law of conservation of energy, energy can't be created or destroyed. Its form can only be changed.

Answer:

Yes is incorrect

Explanation:

not all veins carry blood rich in CO2 , the pulmonary vein carries blood with O2 which means that not all veins carry blood rich in CO2

Answer:

89.6 L

Explanation:

In normal conditions,

For every 1 mole of carbon dioxide at STP, it occupies 22.4 L of volume.

============================================================

Solving :

⇒ 1 mole : 22.4 L

⇒ 1 × 4 : 22.4 × 4

⇒ 4 moles : 89.6 L

The percent yield for this reaction is 50.8%.

First, we need to determine the moles of p-phenetidine used:

Moles of p-phenetidine = mass / molar mass

Moles of p-phenetidine = 6.48 g / 137.18 g/mol

Moles of p-phenetidine = 0.0472 mol

Since p-phenetidine is the limiting reagent, the moles of acetophenetidin produced should be equal to the moles of p-phenetidine used.

The theoretical yield of acetophenetidin can be calculated using the stoichiometry of the reaction:

Theoretical yield = Moles of p-phenetidine × (molar mass of acetophenetidin / molar mass of p-phenetidine)

Theoretical yield = 0.0472 mol × (179.22 g/mol / 137.18 g/mol)

Theoretical yield = 0.0616 mol

Now we can calculate the percent yield:

Percent yield = (actual yield / theoretical yield) × 100

Percent yield = (5.72 g / (0.0616 mol × 179.22 g/mol)) × 100

Percent yield = (5.72 g / 11.2512 g) × 100

Percent yield = 50.8%

Therefore, the percent yield for this reaction is 50.8%.

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Answer:

The air above land also warms faster than air above the sea. Cooler higher pressure air above the ocean moves toward warmer lower pressue air above land.

Answer:

Use the sources to help you, but I would say above the water.

Explanation:

"However, water heats up much more slowly than land and so the air above the land will be warmer compared to the air over the ocean. The warm air over the land will rise throughout the day, causing low pressure at the surface. Over the water, high surface pressure will form because of the colder air."

AND

"The depth (distance from top to bottom) of the atmosphere is greatest at sea level and decreases at higher altitudes. With greater depth of the atmosphere, more air is pressing down from above. Therefore, air pressure is greatest at sea level and falls with increasing altitude."

I hope this helps you!

The volume of oxygen made at the end of the reaction in which peroxidase was used as a catalyst is 10 cm3.

Given : The table shows some information about an investigation on the decomposition of H2O2(aq) using two different catalysts. In each experiment, 0.100g of the catalyst and 25.0 cm3 of H2O2(aq) were used. The concentration and temperature of the H2O2(aq) Use were kept constant.

Manganese(IV) oxide 25 95 Peroxidase 10.

For Examiner’s catalystTime taken to collect 50 cm3 of oxygen / sTotal volume of oxygen made at the end of the reaction / cm3(i)What is the total volume of oxygen made at the end of the reaction in which peroxidase was used as a catalyst.

So, we need to determine the total volume of oxygen made at the end of the reaction in which peroxidase was used as a catalyst.Volume of oxygen made at the end of the reaction in which peroxidase was used as a catalyst = 10 cm3.

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A solution is made by dissolving 13 grams of sucrose in 117grams of water proucing a solution with a volume of 125ml. osmotic pressure P = 7.312 atm

Osmotic Pressure = C R T

C = Concentration

moles of sucrose = 13/342 = 0.038

Conc = 0.038/ ( 117/1000) =0.3247

M1 V1 = M2 V2

0.3247 * 117 = 125 * M2

M2 =  0.304

P = 0.304 × 0.0821 + 293

= 7.312 atm

Water cannot pass through a semipermeable membrane due to osmotic pressure. Utilizing the osmotic pressure formula, one may determine the pressure that prohibits osmosis from taking place. Assume that you are preparing a saltwater solution. The mixture will be made up of salt (solute) and water. A semipermeable membrane is subjected to the pressure of a water solution of salts acting in either direction, which is known as osmotic pressure.

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Metals zinc and iron will react with nitric acid to form NO

To determine which metal in problem 25 will react with nitric acid to form NO (standard concentration), we need to look at the reduction potentials of each metal.

The reduction potential is a measure of a metal's tendency to lose electrons and undergo reduction.

In this case, we can use the Nernst equation to calculate the reduction potential for each metal:

E = E° - (RT/nF)ln([NO-]/[NO])

Where:
- E is the reduction potential
- E° is the standard reduction potential
- R is the gas constant (8.314 J/mol*K)
- T is the temperature (in Kelvin)
- n is the number of electrons transferred
- F is the Faraday constant (96,485 C/mol)
- [NO-] and [NO] are the concentrations of nitric oxide and nitric acid, respectively.

We know that NO (standard concentration) is formed when the reduction potential is greater than or equal to 0.80 V.

After calculating the reduction potential for each metal using the Nernst equation, we find that zinc and iron have reduction potentials greater than 0.80 V. Therefore, zinc and iron will react with nitric acid to form NO (standard concentration).

In summary, by calculating the reduction potentials of each metal in problem 25 using the Nernst equation, we can determine that zinc and iron will react with nitric acid to form NO (standard concentration).

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Answer:

A

Explanation:

10ml

PLEASE MARK AS BRAINLIEST

Answer:

D.) 2,200 kJ

Explanation:

To find the energy needed to vaporize aluminum, you need to multiply the given mass (2 kg) by the latent heat of vaporization conversion (via table). You know your answer is correct if the units cancel out.

2 kg aluminum                1,100 kJ
-------------------------  x  ------------------------  = 2,200 kJ
                                   1 kg aluminum

**I apologize if there was another way using the equation **

Answer:

well, we have so much better and more tech and we are a lot smarter than we were before.

Explanation:

Answer:

We have way more advanced technology than our ancestors and we have a better idea of how the earth was millions of years ago.

Explanation:

The defining characteristic of a condensation reaction is that two monomers are covalently bonded together and a water molecule is produced (Option A).

A condensation reaction occurs when two small molecules, known as monomers, react with one another to form a larger molecule, known as a polymer, by releasing a water molecule. Because water is removed, the reaction is also known as a dehydration reaction. The process, which can be repeated many times to form long chains of polymers, is the mechanism by which biopolymers such as proteins, carbohydrates, and nucleic acids are formed.

Option B, two monomers are covalently bonded together and a water molecule is used up, is incorrect.

Option C, a polymer is broken down into monomers and a water molecule is produced, which is a hydrolysis reaction, not a condensation reaction.

Option D, a polymer is broken down into monomers and a water molecule is used up, is also a hydrolysis reaction, not a condensation reaction.

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Answer:

There are main six noble gases in the periodic table. The filling of 4f-orbitals occurs after 6s orbitals. The noble gas that belongs to the sixth period is Radon. Its electronic configuration is [ X e ] 6 s 2 4 f 14 5 d 10 6 p 6  .

Therefore, the name of noble gas is Radon.

a) The net ionic equation for the reaction between 20.0 mL of 0.220 M C₅H₅NHCL and 12.0 mL of 0.241 M CsOH is C₅H₅NH⁺(aq) + OH⁻(aq) ⟶ C₅H₅N(aq) + H₂O(l)b) The limiting reagent in this reaction is CsOH, and C₅H₅N is produced as a result.

According to the balanced equation, one mole of C₅H₅N is produced from the reaction of one mole of C₅H₅NH⁺. We need to determine the limiting reagent first:CsOH + C₅H₅NH⁺ ⟶ C₅H₅N + H₂O20.0 mL of 0.220 M C₅H₅NHCL solution contains (0.220 mol/L) x (20.0 mL/1000 mL) = 0.00440 moles of C₅H₅NH⁺.12.0 mL of 0.241 M CsOH solution contains (0.241 mol/L) x (12.0 mL/1000 mL) = 0.00289 moles of OH⁻.Thus, OH⁻ is the limiting reagent, and the amount of C₅H₅N produced will be the same amount as the amount of OH⁻ that reacted. 0.00289 moles of C₅H₅N are produced when the reaction goes to completion.c) We need to determine the concentration of C₅H₅N after the reaction goes to completion.0.00440 moles of C₅H₅NH⁺ initially reacted with 0.00289 moles of OH⁻. 0.00151 moles of C₅H₅NH⁺ is left over after the reaction is complete, according to stoichiometry calculations.

Thus, the concentration of C₅H₅N after the reaction goes to completion is (0.00151 mol)/(0.0320 L) = 0.0472 M.d) The C₅H₅NH⁺ and OH⁻ ions initially present are completely consumed, so the solution will only contain C₅H₅N and its conjugate base, C₅H₅NH. Because the concentration of C₅H₅NH is known to be 0.0472 M, we can use the Kb expression for C₅H₅NH to calculate the concentration of hydroxide ions and then convert this to pH.  Kb = Kw/Ka = 1.0 x 10^-14/5.9 x 10^-6 = 1.69 x 10^-9Kb = [C5H5NH][OH-]/[C5H5NH2]0.0472 x 0.0472/1.69 x 10^-9 = [OH-]²[OH-] = 8.70 x 10^-6 Mlog[OH-] = -5.06pOH = 5.06pH = 14.00 - pOH = 8.94Therefore, the pH of this solution after the reaction goes to completion is 8.94.'

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Viscosity of polystyrene is determined to know the size of polystyrene its compression, and molding capacity.

To obtain the perfect shape and size the configuration of polystyrene should be maintained under different conditions.

So, to deduce the confirmation of the polystyrene under viscosity determination  we can apply 2 methods;

1. By adding excess diluents to the polystyrene which reduces its viscosity.

2. By introducing or adding small linear chains by addition method to the molecular chains of polystyrene molecular structure to reduce chain entanglement.

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Answer:

Explanation:

(a) Answer: Intermolecular forces

The reason for this answer is because the substance (paraffin wax) only changed it's state from solid to liquid and didn't undergo a breakage in it's covalent bond within it's carbon chain which would have produced another substance.

(b) Solid substances are generally more dense than there corresponding liquid substances because the more compact particles are (which occurs in solids), the more dense they become. They are thus more dense than liquids because liquids have there particles loosely packed and well spaced making them less dense than there corresponding solids. Hence, the solid paraffin wax was going to become less dense because it's particles moved from being tightly packed (as solids) to being loosely packed (as liquids). Density refers to mass per volume but can also be described as the level of compactness of a substance. Thus, since liquid is not as compact as solid, it can be said to be less dense than solids.

(a) distance measured with metre rule or tape rule

    time measured with stopwatch/ stop clock/ timer

    Average speed = total distance / time

(b) (i) decrease in speed

    (ii) Change in speed = a * t

        4.5 m/s

hope this helps......

Answer:

yess I think it is bit then again I haven't really do t that

Answer:

Physical Reaction

4.

8.

9.

11.

15.

17.

19.

20

Chemical Reaction

2.  Hydrochloric acid reacts with  potassium....

3. Water is heated and changes..

5. potassium chlorate...

6.

7.

10.

12.

13.

14.

16.

18.

The numbers are the question number

the number are under their specified places if it is chemical then it should be under chemical change and if it is physical it should be under physical change

Question Number 1. is not written as i don't know the answer.

The ion that has the smallest number of unpaired electrons is Cr²⁺.

An unpaired electron is a single electron in an orbital that does not have another electron to pair with. A single electron in a partially filled orbital is known as an unpaired electron. The unpaired electron spins, which can have a significant impact on the chemical properties of a substance. The chemical properties of an element are mainly determined by the number of electrons in its outermost shell, as well as the number of unpaired electrons in the atom's outermost shell.

Therefore, the ion that has the smallest number of unpaired electrons is Cr²⁺. The electronic configuration of Cr²⁺ is given as follows: Cr²⁺ - [Ar] 3d3

The number of unpaired electrons in the Cr²⁺ ion is 0. Hence, Cr²⁺ has the smallest number of unpaired electrons.

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The new tableau is:
⎣
⎡
​
P
0
0
1
​
0
​
1
3/2
​
0
​
0
​
2
2
−2
​
1
​
0
​
1/2
​
0
​
RHS
300
360
−120
​
​
⎦
⎤

a) To determine the pivot column and pivot element, we look for the most negative number in the bottom row of the tableau. In this case, the most negative number is -2 in the column x2. So, the pivot column is x2 and the pivot element is -2.

To convert the pivot element to 1 and the other numbers in the pivot column to 0, perform the necessary row operations. Divide the pivot row (row 2) by -2, so that the pivot element becomes 1. Then, perform row operations to make the other numbers in the pivot column 0. Subtract 2 times row 2 from row 1 to make the number in the pivot column (x1) 0. Subtract -1 times row 2 from row 3 to make the number in the pivot column (s1) 0. Subtract -2 times row 2 from row 4 to make the number in the pivot column (s2) 0.

The new tableau is:
⎣
⎡
​
P
0
0
1
​
0
​
1
3/2
​
0
​
0
​
2
2
−2
​
1
​
0
​
1/2
​
0
​
RHS
300
360
−120
​
​
⎦
⎤
​


b) Given the new tableau, the three possible interpretations are:
1. Enter solved if you think you have obtained the final tableau.
2. Enter ready for another set of pivot operations if you think more pivot operations are possible.
3. Enter no solution if you think the tableau has no solution.

Please choose the correct interpretation based on the given information.

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The pivot column is the column that contains the smallest positive number in the rightmost column. In this case, the pivot column is the second column, which corresponds to variable x2.

The pivot element is the number in the pivot column that is in the same row as the smallest positive number in the rightmost column. In this case, the pivot element is -2, located in the second row of the pivot column.

To convert the pivot element into 1 and the other numbers in the pivot column to 0, we perform row operations.

First, we divide the entire second row by -2 to make the pivot element 1:

P
0
01
​
x
1
11
3
−1
​
x
2
12
2
−2
​
s
1
10
0
​
s
2
01
0
​
RHS
300
480
0


Next, we subtract 3 times the second row from the first row to make the other number in the pivot column 0:


P
01
01
​
x
11
12
2
−2
​
s
10
0
​
s
01
0
​
RHS
480
0
0
​

Finally, we subtract 2 times the second row from the third row to make the other number in the pivot column 0:

P
01
01
​
x
11
12
2
−2
​
s
10
0

s
01
0​
RHS
480
0
−960


After performing the necessary row operations, we have obtained the new tableau. Now let's look at the numbers in the objective row (the bottom row):

Under column x1 in the objective row, you have: 1
Under column x2 in the objective row, you have: -2
Under column s1 in the objective row, you have: 0
Under column s2 in the objective row, you have: 0
Under column RHS in the objective row, you have: -960

For part b, based on the new tableau obtained, the correct choice is "2. Enter ready for another set of pivot operations" because more pivot operations are possible.

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Answer:

String a piece of twine between the cups. Use a long piece of string to help the sound travel farther. Tie a knot in the end of the string to keep it in the cup. Decorate the cups if desired. One person can hold the phone up to their ear and the other person can talk into the other cup. Keep the string tight or the sound waves won’t travel.

Explanation:

Energy cannot be created or destroyed; it can only be changed from one form to another, according to the rule of conservation of energy.

A fundamental tenet of physics is the law of conservation of energy, which holds that energy can only be changed from one form to another and cannot be created or destroyed. Hence, the overall energy level in a closed system is constant across time. Many tests and observations, such as the energy changes that take place when an object falls from a table to the ground, have demonstrated the accuracy of the rule. The object loses potential energy owing to the change in height while gaining kinetic energy from its motion as it falls. The rule of conservation of energy is demonstrated by the fact that the total amount of energy is the same before and after the fall.

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Dalton's Atomic theory was Atom is an indivisible fundamental particle but Bohrs theory contradict it,

Atoms contain smaller particles: protons, neutrons, and electrons.