When the concentration of NADH increases while the concentration of NAD+ decreases, the electrochemical potential however will increase
What is electrochemical potential?Electrochemical potential can be defined as a measure of the difference between the average energy of the outermost electrons of the molecule or element in its two valence states.
What is NADP?NADP is a coenzyme and simply has it full meaning as Nicotinamide Adenine Dinucleotide Phosphate
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Which statement best describes the organization of the Periodic Table of the Elements?
A. Elements within a period have the same number of electrons.
B. Gases easily form compounds with other elements.
C. All gases are grouped together.
D. Elements within a group have similar properties
D. Elements within a group have similar properties.
What is the term for the heat content of a system?
Enthalpy
Entropy
Energy
Joule
Answer:
Enthalpy
Explanation:
The term entropy is used to express the particle scattering of a system.The term joule is a unit of energy.
A sample of carbon dioxide gas at 125°c and 248 torr occupies a volume of 275 l. What will the gas pressure be if the volume is increased to 321 l at 125°c?.
The new pressure of gas when the volume of the gas is increase to 321 L at 125 °C is 212.46 torr
Data obtained from the question Initial pressure (P₁) = 248 torrInitial volume (V₁) = 275 LTemperature = 125 °C = constant New Volume (V₂) = 321 LNew pressure (P₂) =?How to determine the new pressure
The new pressure of the gas can be obtained by using the Boyle's law equation since the temperature is constant. This is illustrated below:
P₁V₁ = P₂V₂
248 × 275 = P₂ × 321
68200 = P₂ × 321
Divide both side by 321
P₂ = 68200 / 321
P₂ = 212.46 torr
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what mass TiO2 needs to be dissolved in water to make 0.45 mL of a 0.700 M TiO2 solution
No of moles:-
[tex]\\ \tt\Rrightarrow Molarity (Volume)[/tex]
[tex]\\ \tt\Rrightarrow 0.00045(0.7)[/tex]
[tex]\\ \tt\Rrightarrow 0.000315mol[/tex]
Molar mass of TiO_2=79.866g/molMass:-
0.000315(79.866)=0.025157779gTypical household bleach has a ph of 13. what is the h3o concentration in household bleach? round to the nearest hundredth. × 10n m n =
Typical household bleach has a value of pH of 13, so the concentration of H₃O⁺ in household bleach is 1 × 10⁻¹³ M.
What is pH?pH of any solution is defined as the negative logarithm of the concentration of H⁺ ion presnt in the solution.
pH = -log[H⁺]
From this equation we can calculate the concentration of H⁺ ion by removing logarithm as:
[H⁺] = [tex]10^{-pH}[/tex]
Given value of pH = 13
[H⁺] = 10⁻¹³ M
Hence, required concentration is 1 × 10⁻¹³ M.
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Answer:
1st blank is 1.00
2nd blank is -13
Explanation:
The part of an atom that is responsible for the bonding of atoms is
Answer:
the answer is electrons
Explanation:
electrons are responsible for the chemical bonding.
Voluntary muscles
a.are muscles that work automatically.
b.are only in your arms and legs.
c.are muscles that you can control.
d.are muscles that push.
Answer: C.
Explanation:
Voluntary muscle are muscles that you can control.
is the soda ginger ale(canada dry) a weak acid or a strong acid? why
Answer:
Ginger ale is a strong acid
Explanation:
This is because of the high amounts of carbonic acid that it contains, putting it below the 4.6 Ph threshold.
Explain ferromagnetism. Include what is happening to the electron in the atoms
In Ferromagnetism, materials are changed into permanent magnets.
What is Ferromagnetism?Ferromagnetism is a process in which specific materials are turned into permanent magnets. The spins of electrons are shifted and electrons become more aligned and sequence with the direction of the field.
So we can conclude that in Ferromagnetism, materials are changed into permanent magnets.
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Based on the graph what is the approximate half-life of the reaction shown below
Which diatomic molecule or ion has the shortest bond length?
Explanation:
The shortest bond distance is at N2 due to its high bond order of 3. From N2 to F2 the bond distance increases despite the fact that atomic radius decreases.
H₂ is the diatomic molecule or ion that has the shortest bond length.
What are diatomic molecules?
Diatomic atoms are those atoms which are composed of two atoms that are joined by a chemical bond.
H₂ is the simplest diatomic molecule is this.
It is diamagnetic and has only two molecular orbitals (g and u), two electrons, and a bond order of one.
It has a 74 pm bond length.
Thus, H₂ is the diatomic molecule or ion that has the shortest bond length.
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Round the mmHg readings to the nearest whole number. Round the kPa readings to the nearest tenth. Round the atm readings to the nearest hundredth. Convert a pressure of 2.29 atm to ____ mm Hg.
The pressure of 2.29 atm can be converted to [tex]1740.4 mm Hg.[/tex]
What is conversation?Conversation is a way of writing a value in another unit, it helps to reduce large values by using a unit.
It should be noted that 1 atm. =760.0 mm Hg
We were given 2.29 atm, the we can convert it to mm Hg. as;
[tex][ 2.29 atm* 760.0 mmHg / atm.][/tex]
= 1740.4 mm Hg.
Therefore, The pressure of 2.29 atm can be converted to [tex]1740.4 mm Hg.[/tex]
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Isotopes are:
A. found in the nuclear reactions in
stars but not on Earth.
B. are only theoretical.
C. found in nature.
D. only formed in laboratories.
Isotopes are only formed in laboratories and is denoted as option D.
What are Isotopes?This refers to an element which has the same atomic number but different mass number due to difference in number of neutrons.
They are also usually formed in laboratories through series of chemical reactions.
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Calculate the molarity of each of the following solutions. Use the periodic table if necessary. A salt solution with a volume of 250 mL that contains 0. 70 mol NaCl. M.
The molarity of the NaCl in the 250 ml slat solution is 2.8M.
What is molarity?
The molarity of a solution is defined as the concentration of a solute per unit volume of the solution.
Given, the volume of the solution is 250 ml converted into l 0.25
The number of moles of NaCl is 0.70.
By the formula of molarity
[tex]M = \dfrac{n}{V}\\\\\\M = \dfrac{0.70}{0.25} = 2.8 M[/tex]
Thus, the molarity is 2.8 M.
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An ice cube is placed on the counter, as seen below. Draw an arrow to show the direction of heat transfer to or from the ice/water. Explain your answer.
Answer:
The arrow would be facing upwards from the counter to the icecube.
Explanation:
Heat flows from the counter to the ice causing the molecules in the counter to move more slowly.
An ice cube is placed on the counter, The arrow would be facing upwards from the counter to the ice cube. This is the property of water.
what are the properties of water molecule ?It is tasteless, odorless, or transparent, nucleus of the oxygen atom and the electrons strongly than the nuclei of the hydrogen atoms.
In water molecule oxygen is electro negative than hydrogen, results in the development of a partial negative charge on the oxygen and a partial positive charge on the hydrogen end.
Water have a strong cohesive property where the attraction of molecules with other molecules of the same kind is referred to as cohesion.
Surface tension of the water is defined as the tendency of the surface to resist rupture when they are subjected to stress due to cohesive forces.
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What is the molarity of a solution formed when you add 200. Ml of water to 50. Ml of 5. 0 m hcl
The molarity of a solution formed when you add 200 mL of water to 50 mL of 5. 0 M HCl is 1.25M.
How to calculate molarity?The molarity of a solution can be calculated using the following formula:
M1V1 = M2V2
Where;
M1 = molarity of a baseM2 = molarity of acidV1 = volume of baseV2 = volume of acidM1 × 200 = 50 × 5
200M1 = 250
M1 = 250/200
M1 = 1.25M
Therefore, the molarity of a solution formed when you add 200 mL of water to 50 mL of 5. 0 M HCl is 1.25M.
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A sample of nitrogen occupies 10.0 liters at 25oC , what would be the new volume at 20oC?
Apply Charles law
[tex]\\ \bf\bull\rightarrowtail V1T2=V_2T1[/tex]
[tex]\\ \bf\bull\rightarrowtail 10(20)=25V_2[/tex]
[tex]\\ \bf\bull\rightarrowtail 200=25V_2[/tex]
[tex]\\ \bf\bull\rightarrowtail V_2=8L[/tex]
Answer:
hope it's helpful to you
In an exothermic reaction, which condition will be true?
A.) Activation energy will be less than the energy of the reactants.
B.) Activation energy minus energy of the products will be greater than activation energy minus energy of reactants.
C.) Activation energy minus energy of the products will be less than activation energy minus energy of reactants.
D.) Activation energy will be less than the energy of the products.
Activation energy will be less than the energy of the products in an exothermic reaction. Therefore, option (D) is correct.
What is exothermic reaction?In this type of reaction, the energy of the products is lower than the energy of the reactants. As a result, the difference in energy is released as heat or light, which can be detected by measuring the temperature or observing the light emitted during the reaction.
Exothermic reactions occur spontaneously, meaning they do not require an external energy source to start the reaction. Common examples of exothermic reactions include combustion, oxidation, and neutralization. These reactions often involve the formation of stronger bonds between atoms or molecules, which releases energy in the form of heat or light.
Exothermic reactions play an important role in many natural and industrial processes, including respiration, photosynthesis, and the production of electricity in power plants.
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Which substance is known as the universal solvent because it dissolves more solutes than any other solvent?.
Answer:
Water(H20)
Explanation:
Water is called the universal solvent because more substances dissolve in water than in any other chemical. This has to do with the polarity of each water molecule. The hydrogen side of each water (H2O) molecule carries a slight positive electric charge, while the oxygen side carries a slight negative electric charge.
At what number carbon does the phosphate group connect to the sugar?.
The phosphate group attached to the 5' carbon of the sugar on one nucleotide forms an ester bond with the free hydroxyl on the 3' carbon of the next nucleotide.
What increases the rate a solute dissolves in a solvent.
Answer:
Stirring
Explanation:
Stirring a solute into a solvent speeds up the rate of dissolving because it helps distribute the solute particles throughout the solvent. For example, when you add sugar to iced tea and then stir the tea, the sugar will dissolve faster.
Answer:
crushing particles of solute
Explanation:
which of these elements has the smallest atomic radius
Describe how to express the rate of a chemical reaction
Answer: A “rate” is a measure of the speed of any change that occurs within an interval of time In chemistry, reaction rate is expressed as the amount of reactant changing per unit time. Example: 3 moles/year, or 5 grams/second
Explanation: A “rate” is a measure of the speed of any change that occurs within an interval of time In chemistry, reaction rate is expressed as the amount of reactant changing per unit time. Example: 3 moles/year, or 5 grams/second
Answer:
Chemical reaction rates are usually expressed as the concentration of reactant consumed or, the concentration of product formed per unit time.
Explanation:
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What causes “gaps in the rock record” and how is that described?
Answer:
An unconformity is a widespread surface separating rocks above and below, which represents a gap in the rock record. Unconformities occur when either erosion wears away rocks, or rock deposits never form. Therefore, a time gap exists between when the rocks below the unconformity formed and when those above it formed.
Explanation:
Devise a two‑step synthesis of the alkene from the ketone using the reagents provided
We can convert ketones to alkenes by the use of;
1)B2H6 in THF
2) H2O2/NaOH
What is a ketone?A ketone is a compound of the sort RCO. The compound contains a carbon - oxygen double bond. The ketone can be used in the synthesis of an alkene. The question is incomplete hence I can only give a general answer.
The reaction involves the following reagents;
1)B2H6 in THF
2) H2O2/NaOH
When these two reagents are applied any ketone can be converted to an alkene.
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The two-step synthesis of the alkene from the ketone using the reagents provided is
Step1: B₂H₆ in THF.
Step2: H₂O₂ / NaOH
What is alkene?An alkene is a hydrocarbon compound containing double bonds between carbons.
The process of making alkenes from ketones or aldehyde is called the witting reaction or witting olefination.
Thus, the two-step synthesis of the alkene from the ketone using the reagents provided is
Step1: B₂H₆ in THF.
Step2: H₂O₂ / NaOH
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balance the equation
___NaBr + ___ Ca(OH)2 -----> ___CaBr2 + ___NaOH
Answer:
2NaBr + Ca(OH)2 ––> CaBr2 + 2NaOH
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Give the ratio in which hydrogen and oxygen are present in water by volume.
(a) 1:2
(b) 1:1
(c) 2:1
(d) 1:8
Answer:
Explanation:
The volume of Hydrogen and Oxygen molecules are not the same but assuming that they are, the ratio in water which is H2O would be
(c) 2:1
How long does sucrose take to decompose? Why?
I need help!
Answer:
The loss of crystalline structure of sucrose was reported at various temperatures, but decomposition, after >50 h of holding at 120 °C in a sealed pan.
Explanation:
As this condition is above the melting temperature of fructose (a possible first decomposition product), and there were water and impurities.
Solutions of monosodium phosphate and disodium phosphate are combined in equal volume to produce a buffer. Identify the combination that will produce the buffer with the highest buffer capacity
Answer: 0.1M NaH2PO4 & 0.1M Na2HPO4
Explanation:
Which statement best describes the use of a chemical indicator in a titration? It must be measured to the nearest 0. 01 mL. It must be colored in the acid solution. It must measure pH directly at all pH values. It must change color near the equivalence point.
The statement that best describes the use of a chemical indicator in a titration is it must change color near the equivalence point.
What are indicators?Indicators are those compounds which are used in the titration process to estimate the presence of chemical entities in it.
In the titration process, indicator is added in the titration solution which changes its color when the reaction mixture goes towards the equivalence point and becomes disappear at that point.
Hence option (4) is correct.
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