An enzyme serves as a place where a chemical reaction can occur because.
Answers
An enzyme serves as a place where a chemical reaction can occur because it can reduce the activation energy necessary for the reaction to take place.
What is an enzyme?
An enzyme is a type of protein molecule that functions as a biological catalyst. It is responsible for increasing the rate of chemical reactions that occur in living organisms by reducing the activation energy necessary for the reaction to occur.
A chemical reaction requires the breaking of bonds and the formation of new bonds. However, this process requires energy, which is referred to as activation energy. The activation energy must be supplied to the reactants in order to initiate the reaction. Enzymes, on the other hand, lower the activation energy required for a reaction, making it easier for the reaction to occur.
Conclusion
Enzymes are proteins that speed up chemical reactions in living organisms by reducing the activation energy required for a reaction. Without enzymes, many of the chemical reactions necessary for life would not occur.
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Related Questions
A tank measures 18.89in * 8.39in* 6.70in, how many liters of dichloromethane could it hold?
Answers
Answer:
Well it would hold 1061.86357 liters.
Explanation:
So to find volume you multiply 18.89(8.39)(6.7) and you’ll get the volume.
. At time t=0, an aluminum bar (thermal diffusivity k=0.86 ) of length Lcm with completely insulated lateral surfaces and constant thermal properties is removed from boiling water (uB=100 degrees Celsius). Do the following i), ii), iii) for each of the scenarios, a-d, below i) Write down the initial-boundary value problem. That is, the PDE along with any initial and boundary conditions. ii) Without solving for u(x,t), describe the temperature distribution in the bar as t→[infinity] based on physical intuition. iii) Find the solution as t→[infinity] by solving the appropriate steady state equation. a) The two ends of the bar are immediately immersed in a medium with constant temperature 10 degrees Celsius. b) The end at x=0 is immersed in a medium with temperature 0 degrees Celsius and the end at x=L is completely insulated.
Answers
(i) The initial-boundary value problem for the given scenarios are as follows:
a) Scenario a:
PDE: ∂u/∂t = k * ∂²u/∂x²
Initial condition: u(x, 0) = 100 (boiling water temperature)
Boundary conditions: u(0, t) = 10, u(L, t) = 10 (constant temperature at the ends)
b) Scenario b:
PDE: ∂u/∂t = k * ∂²u/∂x²
Initial condition: u(x, 0) = 100 (boiling water temperature)
Boundary conditions: u(0, t) = 0 (temperature at x=0), ∂u/∂x(L, t) = 0 (thermal insulation at x=L)
(iii) The solution for the temperature distribution as time approaches infinity can be found by solving the appropriate steady state equation.
What is the expected temperature distribution in the bar as time approaches infinity?(i) The initial-boundary value problem formulation states the partial differential equation (PDE) governing the temperature distribution in the aluminum bar, along with the initial condition and boundary conditions.
In scenario (a), both ends of the bar are immersed in a medium with a constant temperature of 10 degrees Celsius, while in scenario (b), the end at x=0 is immersed in a medium with temperature 0 degrees Celsius and the end at x=L is insulated.
(ii) As time approaches infinity, the temperature distribution in the bar tends to reach a steady state.
In scenario (a), the temperature throughout the bar will eventually approach a constant value of 10 degrees Celsius, since both ends are immersed in a medium with that temperature.
In scenario (b), the temperature at x=0 will approach 0 degrees Celsius, while the temperature at x=L will remain constant due to thermal insulation.
(iii) To find the solution as time approaches infinity, we need to solve the appropriate steady state equation.
In scenario (a), the steady state equation is ∂²u/∂x² = 0, which implies that the temperature gradient is zero throughout the bar, resulting in a constant temperature of 10 degrees Celsius.
In scenario (b), the steady state equation is ∂²u/∂x² = 0 with the boundary condition u(0) = 0, which implies a linear temperature distribution from 0 degrees Celsius at x=0 to a constant temperature at x=L due to insulation.
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Select all of the examples of sound resonance. A. plucking a harp string producing a high tone B. hearing "the ocean" in a seashell held up to the ear C. wearing sound cancellation earphones to block out noise D. blowing over the opening of a bottle producing a low tone E. noticing a change in pitch of the siren as a firetruck moves past
Answers
Answer
I know the answer
Explanation:
Imagine that a cold snap hits Florida in February. Would it be cooler along the coast or further inland? Plz plz plz anwswr quick
Answers
Along the coast, its always colder near water
Which model best represents a pattern?
Antenne UHF
Chaum
RTG
Master
Antenne
grand gain
DAN
REMS
RAD
SAM
Chemin
Answers
density is 6g/mL and volume is 40 mL what is the mass
Answers
Answer:
240g
Explanation:
Using the equation m=pV, where m=mass, p=density, and V=Volume
m=(6)(40)=240
m=240
a 4.50 ml solution has a concentration of 12 m. what mass of tio2 must be present in solution? your answer should have two significant figures.
Answers
The mass of the titanium dioxide that is required is 4.32 g.
What is the mass of the solute?We know that a solution can be made when we dissolve a solute in a solvent. The solvent is the liquid to which we have to add the solid and then allow it to dissolve. We are now asked to find the mass of the solute that have been dissolved in order to get the solution.
Thus the combination of the solute and the solvent is what we have referred to in this context as the solution of the titanium dioxide.
We have the following information;
Concentration of the solution = 12 M
Volume of the solution = 4.5 mL
We know that;
number of moles = concentration * volume
Number of moles = 12 M * 4.5/1000
= 0.054 moles
Now;
Mass = Number of moles * molar mass
= 0.054 moles * 80 g/mol
= 4.32 g
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How many atoms are in 162.0 g of magnesium?
Answers
Answer:
3,938.22
Explanation:
(correct me if I'm wrong)
What is a carcinogen? a. a toxin linked to an increased risk of cancer b. a non-carbon based chemical c. a type of pollution that can be traced to a specific source d. a type of pollution that cannot be traced to a specific source
Answers
Answer:
Explanation:
a i think
Answer:
it would (a)
Explanation:
carcinogen is a substance that gives your tissues a higher chance of getting cancer
in the practice of "green chemistry" in industrial production, the primary focus is on:
Answers
Reducing or eliminating the usage or manufacture of hazardous compounds is the main goal of "green chemistry" in industrial production. A branch of chemistry is known as "green chemistry,"
often known as "sustainable chemistry," is concerned with developing goods and procedures that reduce or completely do away with the usage and production of hazardous compounds. Green chemistry is concerned with how chemicals affect the environment as opposed to environmental chemistry, which is concerned with how chemicals affect nature. The output of the industrial sector of the economy is measured by industrial production. Manufacturing, mining, and utilities all fall within the industrial sector. Although these industries only make up a minor fraction of the GDP, they are quite susceptible to interest rates and consumer demand.
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Which of these is a limitation
of using this simulation to
study and understand the
behavior of light through a
convex lens?
A. The simulation shows the relative
positioning to the rays.
B. It allows us to visualize the behavior of
light rays that we normally cannot see.
C. The measurements of the rays will
change based on the size of the screen.
Answers
The limitation of using this simulation to study and understand the behavior of light through a convex lens is:
C. The measurements of the rays will change based on the size of the screen.The limitations of the simulationThe simulation may not accurately represent the real-world behavior of light through a convex lens because the measurements of the rays can be influenced by the size of the screen or display used for the simulation.
The scaling and proportions on the screen may affect the accuracy of the simulation, potentially leading to discrepancies in the behavior of the light rays compared to their actual behavior in physical experiments or observations.
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Four transmembrane regions changes conformation as gaba binds. which system is this process describing?
Answers
Ligand-gated ion channel is this process describing four transmembrane regions changes conformation as Gaba binds.
What are Gaba?In addition to being a ligand-gated ion channel, the \(GABA_A\) receptor ( \(GABA_A\) R) is an ionotropic receptor. Aminobutyric acid (GABA), the main inhibitory neurotransmitter in the central nervous system, is its endogenous ligand.
The postsynaptic cell's \(GABA_A\) receptor opens up to chloride ions (Cl) and, to a lesser extent, bicarbonate ions (HCO3); this selective permeability is known as the \(GABA_A\) receptor.
Depending on the membrane potential and the differential in ionic concentration, this may cause ionic fluxes across the pore. When the receptor is active, Cl will flow into the cell if the membrane potential is greater than the equilibrium potential, sometimes referred to as the reverse potential, for chloride ions.
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A condensation reaction is a reaction that involves joining together two or more small molecules to form a large one. This is known as what kind of reaction?.
Answers
A condensation reaction is a type of chemical reaction that involves the joining together of two or more small molecules to form a larger molecule.
It is commonly referred to as a condensation reaction because it typically involves the release of a small molecule, such as water or alcohol, as a byproduct.
The term "condensation" is used to describe this process because it is analogous to the condensation of water vapor into liquid water, where smaller water molecules combine to form larger water droplets.
In a condensation reaction, two functional groups on different molecules react with each other, resulting in the formation of a covalent bond between them. This bond formation leads to the creation of a larger molecule, often referred to as a polymer.
The release of a small molecule as a byproduct is necessary for the reaction to occur, and it is commonly referred to as a "condensation product."
Condensation reactions play a crucial role in various biological processes, such as protein synthesis, DNA replication, and the formation of complex carbohydrates.
They are also widely utilized in organic synthesis to create a wide range of organic compounds, including polymers, pharmaceuticals, and natural products.
Overall, a condensation reaction is a chemical reaction that involves the combination of small molecules to form a larger one, accompanied by the release of a smaller molecule as a byproduct.
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If the periodic table was arranged by increasing atomic mass, several pairs of elements would be out of order and would not match the chemical properties of the group in which they would be found. list 3 such occurrences in the first five periods.
Answers
The periodic table is a tabular display of the chemical elements in order of their atomic number, electron configurations, and chemical properties, arranged in rows (periods) and columns (groups).
In the event that the periodic table were arranged by increasing atomic mass, a few sets of elements would be out of order, and they would not match the chemical properties of the group in which they would be found.
Here are three such occurrences in the first five periods:
Li (Lithium) and Be (Beryllium)Na (Sodium) and Mg (Magnesium)
K (Potassium) and Ca (Calcium)
In the modern periodic table, lithium and sodium are both members of Group 1 (Alkali Metals), and beryllium and magnesium are both members of Group 2 (Alkaline Earth Metals). The members of each group show comparable chemical and physical properties.
However, if arranged by atomic mass, beryllium (9.012) would come before lithium (6.941) and magnesium (24.305) would come before sodium (22.990).
Similarly, potassium and calcium are both members of Group 2 (Alkaline Earth Metals) in the modern periodic table, yet if the periodic table were arranged by atomic mass, calcium (40.078) would come before potassium (39.098).
Therefore, if the periodic table were arranged by increasing atomic mass, several pairs of elements would be out of order and would not match the chemical properties of the group in which they would be found, as previously mentioned.
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A recipe calls for 3 tablespoons of milk for 7 pancakes. If this recipe was used to make 28 pancakes, how many tablespoons of milk would be needed
A. 15
B. 11
C. 12
D. 9
Answers
The number of tablespoons of milk needed for 28 pancakes is determined as 12 tablespoons.
option C is the correct answer.
How many tablespoons of milk would be needed?The number of the tablespoons of milk that would be needed is calculated by applying simple proportion method.
3 tablespoons of milk for 7 pancakes;
3 -----------> 7
? tablespoons of milk for 28 pancakes;
? --------------------> 28
Combine the two equations and solve for the number of tablespoons needed as follows;
? = ( 3 x 28 ) / 7
? = 12
Thus, The number of tablespoons of milk needed for 28 pancakes is determined by applying simple proportion.
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Silus wants to monitor the temperature of a reaction every 0.5 seconds for 30 minutes. He plans to generate a graph of the temperature values over time and insert the graph into a text document. Which pair of tools would be best for Silus to use?
Answers
Answer:
an electronic temperature probe and a computer
Will a supersaturated solution return back to being a saturated solution once a solute crystal has been added?
Answers
Yes, a supersaturated solution will return back to being a saturated solution once a solute crystal has been added.
Supersaturated solution explained.A supersaturated solution is a solution that contains more dissolved solute than would be possible under normal circumstances at a given temperature and pressure. In a supersaturated solution, the solute molecules are able to remain dissolved in the solvent even though they would normally begin to precipitate out of the solution. This can happen when a solution is prepared by dissolving a solute in a solvent at an elevated temperature and then cooling the solution rapidly, preventing the solute from crystallizing out of the solution. Supersaturated solutions are often unstable and will eventually return to a saturated state if given the opportunity to do so, such as by the addition of a seed crystal or agitation of the solution.
When a solute crystal is added to a supersaturated solution, it provides a nucleation site for the solute to crystallize. As the solute molecules attach to the crystal, they are removed from the solution, causing the concentration to decrease. Eventually, the concentration will decrease to the point where it becomes saturated, and no more solute will dissolve.
Thus, adding a solute crystal to a supersaturated solution causes the excess solute to come out of the solution and return it to a saturated state.
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A student is studying calcium, a highly reactive element that humans need for strong bones. Which characteristic of calcium is most closely related to its chemical reactivity?
The 20 protons in each atom of calcium
The density of calcium, which is 1.54 g/cm3
The atomic mass of calcium, which is 40.078 amu
The 2 valence electrons in each atom of calcium
Answers
Answer:D
Explanation:
Took the quiz
The 2 valence electrons in each atom of calcium this is a characteristic of calcium are most closely related to its chemical reactivity. Hence, option D is correct.
What is calcium?Calcium is a chemical element with the symbol of (Ca).an atomic number of calcium is 20.it is an alkaline earth metal. The atomic mass of calcium is 40.078 unit.
When metal atoms are reacts by losing they're losing their valence electrons. So, the reactivity of a metal depends on how easily its atoms lose valence electrons.
Calcium is a major mineral in our bones.
If you don’t get the right amount of calcium, you lose more bone strength.
The chemical reactivity of an element is dependent on its valence electrons and the distance of its valence electrons from the atomic nucleus.
The 2 valence electrons in each atom of calcium this is a characteristic of calcium is most closely related to its chemical reactivity. Hence, option D is correct.
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Compound A has a molar mass of 20g/mol and compound B has a molar mass of 30g/mol.
1. How many moles of compound B are needed to have the same mass as 6.0 mol of compound A? (Please give explanation not only the answer)
Answers
Answer:
9 moles
Explanation:
To find out how many moles of compound B are needed to have the same mass as 6.0 mol of compound A, we need to use the molar mass of each compound and set up a proportion:
Moles of A / Molar mass of A = Moles of B / Molar mass of B
We know that the molar mass of compound A is 20 g/mol and that we have 6.0 mol of it, so:
6.0 mol A / 20 g/mol A = Moles of B / 30 g/mol B
Simplifying this equation:
0.3 mol A = Moles of B / 30
Multiplying both sides by 30:
9 mol B = 0.3 mol A
So, we need 9 moles of compound B to have the same mass as 6.0 mol of compound A.
The 3 conditions under which colliding particles can react are
Answers
It consists of two lobes that contain pollen sacs and pollen grains.
Answers
Answer:
Assuming you need the names :)
Explanation:
It's dithecous anther
what are the two ways in which the physical state of matter can be changed
Answers
The two ways in which the physical state of matter can be changed are melting and freezing.
Melting is the process by which a solid substance transitions to a liquid state. As a result, the energy added to the solid substance causes the molecules to vibrate at a higher rate. As a result, the heat breaks the bonds between the molecules, allowing them to flow freely.Freezing is the process by which a liquid substance transitions to a solid state. As a result, energy is removed from the liquid substance. The molecules in the substance are moving quickly, but when energy is removed, they slow down.Because of the decrease in energy, the molecules can no longer slide past one another and form a rigid structure, resulting in a solid state of matter.For such more questions on physical state
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1. How many molecules of H,O are in 4.32 moles?
Answers
Answer:
dont know
Explanation:
TRY
Which element, represented by X, reacts with chlorine to produce the compound XCI?
Answers
Answer:
Aluminum
Explanation:
Each chlorine atom needs one more valence electron to have a full valence electron shell, so X needs to have 3 valuence electrons. The only that satisfies this is aluminum.
what mass of disodium tetra oxo sulphate (vi) will be dissolved in 100g of water, if the mole fraction of Na2So4 is 0.039?
Answers
Answer: 0.277g of disodium tetra oxo sulphate (vi) will be dissolved in 100g of water, if the mole fraction of Na2So4 is 0.039. ✅
PLEASEEEE GIVE BRANLIEST
Explanation:
The mass of a solute dissolved in a solvent can be calculated using the formula:
mass of solute = mole fraction of solute x mass of solvent / molar mass of solute
In this case, we are trying to find the mass of disodium tetra oxo sulphate (vi) (Na2SO4) dissolved in 100g of water, with a mole fraction of 0.039.
mass of Na2SO4 = (0.039) x (100g) / (142.04 g/mol)
mass of Na2SO4 = 0.277 g
So, 0.277 g of disodium tetra oxo sulphate (vi) will be dissolved in 100g of water, if the mole fraction of Na2So4 is 0.039. ✅
A line-angle structure of terephthalic acid shows a ring with six vertices and alternating single and double bonds.
a. True
b. False
Answers
A line-angle structure of terephthalic acid does not show a ring with six vertices and alternating single and double bonds. The given statement is false
Terephthalic acid, with the chemical formula C₈H₆O₄, is a compound that consists of a benzene ring with two carboxylic acid groups (-COOH) attached to it. It does not have alternating single and double bonds in the ring structure. The correct representation of terephthalic acid would show a benzene ring with two -COOH groups attached to it.
Hence, the given statement a line-angle structure of terephthalic acid shows a ring with six vertices and alternating single and double bonds is false.
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6.Find the empirical formula of a compound that contains:19.16 g Sodium1.680 g Hydrogen25.81 g Phosphorus
Answers
The empitical formula shows the simplest ratio of elements in a compound (not the total number of atoms in the molecule).
So to find the empirical formula we need to calculate how many moles of each atom we have in this sample. Then we will see the ratio of each element.
We are given the mass, so to convert it to moles we use the molar mass. For this we go to the periodic table and see that the values for each element are:
Na (sodium): 22,99 g/mol
H (hydrogen): 1 g/mol
P (phosphorus): 25,81 g/mol
So we calculate the moles of each element as follows:
\(\begin{gathered} moles_{Na}=\frac{Mass_{Na}}{Molar\text{ }mass_{Na}}=\frac{19.16g}{22.99g/mol}=0.833\text{ mol} \\ moles_H=\frac{Mass_H}{Molar\text{ }mass_H}\text{ }=\frac{1.68g}{1g/mol}=1.68mol \\ moles_P=\frac{Mass_P}{Molar\text{m}ass_P}\text{=}\frac{25.81g}{30.97\frac{g}{mol}}=0.833mol \end{gathered}\)And as we see, for every 0.833 moles of Na we have the same number of moles of P, so the ratio of these elements in the molecule is 1 to 1.
As for the hydrogen:
\(\frac{moles_{Na}}{moles_H}=\frac{0.833}{1.68}\approx\frac{1}{2}\)So the ratio Na to H is 1 to 2.
Now we can write the empirical formula as follows=
\(NaH_2P\)
what is the bond order for al2
Answers
Answer:
The bond order is 1.091
Explanation:
there really is no explanation.
A student was asked to formulate a hypothesis about what would happen if 100. mL of 0.1 M NaOH(aq) at
25°C was combined with 100. mL of 0.1 M MgCl₂(aq) at 25°C. Which of the following hypotheses indicates
that the student thought a chemical change would occur?
Answers
Answer:
There will be the formation of a Common salt (NaCl) and Mg(OH)2 which is a base after the reaction between the two chemicals
the transfer of energy by waves is also known as _______
Answers
Answer:
wave
Explanation:
'Wave' is a common term for a number of different ways in which energy is transferred: In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields.
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