When we determined the effect of temperature on enzyme activity, what were the enzyme, substrate, and product of the enzymatic reaction?
Answers
For example, the enzyme amylase breaks down starch (the substrate) into glucose (the product).
When determining the effect of temperature on enzyme activity, the specific enzyme, substrate, and product of the enzymatic reaction would depend on the experiment being conducted.
However, in general, enzymes are proteins that act as catalysts to speed up biochemical reactions, and they typically work on a specific substrate to produce a specific product.
For example, the enzyme amylase breaks down starch (the substrate) into glucose (the product). In order to determine the effect of temperature on enzyme activity, the activity of the specific enzyme being studied would need to be measured as it catalyzes the conversion of its specific substrate to its specific product.
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Related Questions
If the half-life of Xe-133 is 5. 2h, how much of a 20. -mCi sample is still active after 15. 6 h?
Answers
After 15.6 hours, 1.25 mCi of the 20 mCi sample of Xe-133 will still be active.
The half-life of Xe-133 is given as 5.2 hours. The half-life is the time it takes for half of the radioactive substance to decay. In this case, we need to determine how much of the initial 20 mCi sample remains after 15.6 hours.
Since the half-life of Xe-133 is 5.2 hours, we can calculate the number of half-lives that have passed in 15.6 hours by dividing the elapsed time by the half-life:
15.6 hours / 5.2 hours = 3 half-lives
Each half-life reduces the activity of the sample by half. Therefore, after 3 half-lives, the activity will be reduced to:
20 mCi / (2³) = 20 mCi / 8 = 2.5 mCi
So, after 15.6 hours, 1.25 mCi (half of 2.5 mCi) of the 20 mCi sample of Xe-133 will still be active.
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In a typical mammalian cell, the net transport by the sodium-potassium exchange pump that maintains the 70 mv membrane potential is 500 singly charged ions per second.
Answers
For a typical mammalian cell, the net transport by the sodium-potassium exchange pump, Work done is mathematically given as
W= 5.6*10-18 J
How much work does the pump do each second?Generally, the equation for the Potential difference is mathematically given as
Potential difference = Work done / Charge
Therefore
W=q*P.d
Q= 500 * 1.6*10-19 C
P.d. = 70 mV
In conclusion,Workdone
W500 * 1.6*10-19 * 70*10-3
W= 5.6*10-18 J
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write the skeleton equation for hydrogen + oxygen -> water
Answers
The skeleton equation for the reaction between hydrogen and oxygen to form water is 2H₂ + O₂ -> 2H₂O
In this equation, the reactants are hydrogen (H₂) and oxygen (O₂), and the product is water (H₂O). The equation represents the balanced chemical equation for the reaction, meaning that the number of atoms of each element is the same on both sides of the equation. The coefficient "2" in front of H₂ indicates that two molecules of hydrogen are reacting.
The coefficient "1" in front of O₂ indicates that one molecule of oxygen is reacting. The coefficient "2" in front of H₂O indicates that two molecules of water are produced. In this reaction, the total number of hydrogen atoms and oxygen atoms remains the same on both sides of the equation.
The reaction between hydrogen and oxygen to form water is a highly exothermic reaction and is commonly known as combustion or burning. It is a vital process for energy production, as it releases a significant amount of heat energy.
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If you were a biochemical engineer, what would you want to research?
Answers
just search for what biochem engineers research
In CaSO4, the oxidation number of Ca is
that of S is
and that of O is
Answers
Answer: In CaF2, the oxidation number of Ca is +2
, and that of F is -1
. In H2SO4, the oxidation number of H is +1
, that of S is +6
, and that of O is -2
. In CaSO4, the oxidation number of Ca is +2
, that of S is +6
, and that of O is -2
. In HF, the oxidation number of H is +1
, and that of F is -1
What is the lowest value of n that allows g orbital to exit
Answers
What are the effects of UV radiation from the sun when it is absorbed by the skin
Answers
Answer:
A common effect of UV radiation is erythema or sunburn.
Explanation:
This happens when skin cells are damaged by the absorption of energy from UV rays.
Answer:
A common effect of UV radiation is erythema or sunburn.
Explanation:
This happens when skin cells are damaged by the absorption of energy from UV rays.
In which list are the elements arranged in order of increasing atomic mass?
a) Cl, K, Ar
b) Fe, Co, Ni
c) Te, I, Xe
d) Ne, F, Na
Answers
Answer:
aswer is A
Explanation:
because the CL,K,AR is correct since it is order right
Using the Kf value of 1. 2×109 calculate the concentration of Ni2+(aq) and Ni(NH3)62+ that are present at equilibrium after dissolving 1. 73 gNiCl2 in 100. 0 mL of NH3(aq) solution such that the equilibrium concentration of NH3 is equal to 0. 20 M.
[Ni2+], [Ni(NH3)62+] =
Answers
Using the Kf value of 1. 2×10⁹. The concentration of [Ni²⁺] is 0.113 M and the concentration of the [Ni(NH₃)₆²⁺] is 0.112 M.
The reaction is given as :
Ni²⁺ + 6NH₃ ⇄ Ni(NH₃)₆²⁺
The concentration of the nickel ion is given as :
[Ni²⁺] =(1.73 g NiCl₂× 1 mol NiCl₂ / 129.6 g × 1 mol Ni²⁺ / 1 mol NiCl₂) / 0.100 L
= 0.113 M
The kf = 1. 2×10⁹
kf = [Ni(NH₃)₆²⁺] / [Ni²⁺] [NH₃]⁶
1. 2×10⁹ = x / ( 0.113 - x ) (0.2 )
x = 0.112 M
[Ni(NH₃)₆²⁺] concentration = 0.112 M and [Ni²⁺] concentration is 0.113 M.
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Which of the following single replacement reactions will take place?
O Al + Mg(NO3)2 -->
O Cu + Mg(NO3)2 -->
Ca + Mg(NO3)2 -->
O Zn + Mg(NO3)2
-->
Answers
Answer:
O Al + Mg(NO3)2 -->
Explanation:
16) According to the Activity Series chemistry reference table, which of these metals will react most readily with
1.0 M HCl to produce H2(g)?
1) Zn
2) Mg
3) Ca
4) K
Answers
Answer:
The correct answer is (1). Zn has the highest electronegativity of all the metals in its column. It has a strong attraction for electrons and low ionization potential, so if potassium chloride were used instead of hydrochloric acid, potassium would react most readily.
Explanation:
This question is asking which metal will react most readily. According to the activity series, alkali metals are more reactive than alkaline earth metals. Magnesium has the lowest outer electron configuration of all the metals in its row on the periodic table so it will have a strong attraction for electrons. The magnesium atom therefore requires less energy to reach an outer energy level so it has the lowest first ionization potential. Therefore, magnesium will react most readily with HCl.
Why did early people most likely choose to settle in Mesopotamia?
Answers
Answer:
People wanted to settle there because it had good living conditions. There was rich soil, and lots of water sources.
I hope this helps!
A 26.5 g sample of nitrogen, N2 , has a volume of 50.0 L and a pressure of 640. mmHg . express answer in three sig figsWhat is the temperature of the gas in kelvins?What is the temperature of the gas in degrees Celsius?
Answers
To answer this question we have to usethe ideal gas law:
\(PV=nRT\)Where P is the pressure, V is the volume, n is the number of moles, R is the constant of ideal gases (0.082atmL/molK) and T is the temperature (in Kelvin degrees).
The first step is to convert the given mass of N2 to moles using its molecular mass:
\(26.5gN_2\cdot\frac{molN_2}{28gN_2}=0.95molN_2\)And convert the pressure from mmHg to atm (1atm=760mmHg):
\(640mmHg\cdot\frac{1atm}{760mmHg}=0.84atm\)Finally, solve the initial equation for T and replace for the given values:
\(\begin{gathered} T=\frac{PV}{nR} \\ T=\frac{0.84atm\cdot50.0L}{0.95mol\cdot0.082atmL/molK} \\ T=539.15K \end{gathered}\)The temperature of the gas is 539.15K.
Convert this temperature to Celsius by substracting 273.15 to the temperature in Kelvins:
\(T=539.15-273.15=226\)The temperature of the gas is 226°C.
In Experiment 2 a gas is produced at the negative electrode.
Name the gas produced at the negative electrode.
Answers
In Experiment 2, the gas produced at the negative electrode is typically hydrogen (H2).
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Exercise #1
Description: If you could see both the Sun and the other stars during the day, this is what the sky would look like looking south at noon on January 1 for an observer in the northern hemisphere. The Sun would appear in the sky next to the more distant stars in the constellation Sagittarius, (labeled constellation C). Also shown are other constellations (named and labeled A, B, D, and E) that will be visible above the horizon at this time when facing south
Answers
If an observer in the northern hemisphere was to face south at noon on January 1, they would be presented with a unique sight.
A meridian transitThe Sun would be visible in the sky and a few constellations would be visible alongside it. Constellation A, B, C and D can be seen in the sky, with constellation C being the Sagittarius constellation, which the Sun is located in. Constellation E is also visible above the horizon.The sight is unique, as the sun is usually not seen when the stars are visible, and is instead only visible during the night. The stars and constellations appear much dimmer than the sun, yet they are still visible during the day.This sight is something only seen during the day, as the other stars usually only appear at night.This image is an example of an astronomical event known as a meridian transit. In a meridian transit, the Sun (labeled constellation C) is seen crossing the observer's meridian, or the line of sky overhead, at a specific time of day.This particular transit occurs at noon on January 1 for an observer in the northern hemisphere, allowing the Sun to be seen alongside the stars in the constellation Sagittarius. Other constellations visible in this image are labeled A, B, D, and E, allowing viewers to identify and appreciate the night sky.A meridian transit is a unique opportunity to witness both the Sun and stars in the same view, making it a special astronomical event.To learn more about A meridian transit referf to:
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8) Hospitals buy 400 L cylinders of oxygen gas compressed at 150 atm pressure. They need to
administer oxygen to patients at 3.0 atm. What volume (V2) of oxygen can a cylinder supply at this lower
pressure?
Answers
Answer:
the answer will be 20,000 L
Mr. Hackworth toasts a marshmallow over a fire. The outside of the marshmallow turns black, a new substance with new properties is created on the outside of the marshmallow, and the marshmallow gives off an odor. What type of change occured?
A
Physical, because color is a physical property.
B
Physical, because a new substance was created, smell, and color change.
C
Chemical, because a new substance was created, smell, and color change.
D
Chemical, because color is a chemical property.
Answers
Answer:
C
Explanation:
This is a chemical property because a catalyst is added(fire). Without a catalyst a marshmallow would stay a marshmallow. The sugar caramelizes(this is not physical because sugar is burning)
An book fell from a shelf 1.5 meters from the ground. If it took the book 3 seconds to hit the ground, what was the velocity of the book?
•1 m/s
•1.5 m/s
•0.5 mls
•3 m/s
Answers
The book's initial velocity before it touches to floor is 14.2 m/s.
How does physics define velocity?The velocity of an object, which is function of time, is the rate at which its location with respect to a frame for reference changes. Similar to velocity, an item's speed and line of action (such as 60 km/h toward the north) are measured.
the book's height above the ground, h = 1.5 m
the book's rate of movement, t = 3 seconds
The following formula is used to determine the book's starting velocity:
h = ut + ¹/₂gt²
where;
The book's velocity is u.
1.5 = 3u + (0.5 x 9.8 x 3²)
1.5 = 3u + 44.1
3u = 1.5 - 44.1
3u = -42.6
\(u= \frac{-42.6}{3}\)
u = -14.2 m/s
u = 14.2 m/s downwards
Therefore, the book's initial velocity before it touches to ground equals 14.2 m/s.
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It is January. The temperature is 33°F, and the wind is blowing. Huge clouds are coming in from the west.
Based on these circumstances, what is a reasonable prediction?
It will probably snow today.
A heat wave will come through today.
The sun will come out for the rest of today.
It will probably not snow today.
Answers
Answer:
It’s A
Explanation:
Got it right on edge just wanted to give the simple answer
Answer:
A. It will probably snow today.
When 10 grams of salt dissolve in 25 grams of water, what is the resulting mass of the mixture?
Answers
Answer:
35 grams
Explanation:
mass of solute = 10 grams
masa of solvent = 25 grams
Resulting mass = Mass of solute + Mass of solvent
= 10 + 25
= 35 grams
How many oxygen atoms are in 5 moles of water H2O molecules?
Answers
Answer:
I think 20
Explanation:
Becu of science
Acetic acid (CH 3 COOH) reacts with water to form the acetate ion and the hydronium ion: CH 3 COOH(aq)+H 2 O(l) leftrightarrow CH 3 COO^ - (aq)+H 3 O^ + (aq) At equilibriumthe concentration of CH 3 COOH is 2. 0 * 10 ^ - 1 * M the concentration of CH 3 COO^ - 1. 9 * 10 ^ - 3 * M and the concentration of H 3 O^ + is 1. 9 * 10 ^ - 3 * M What is the value of K eq for this reaction? 1. 8 * 10 ^ - 5 5. 5 * 10 ^ 4 9. 5 * 10 ^ - 3 1. 1 * 10 ^ 2
Answers
The value of K_eq for this reaction is approximately 1.805 × 10^-5.
To find the value of the equilibrium constant (K_eq) for the given reaction, we can use the equilibrium concentrations of the species involved. The equilibrium constant expression for the reaction is:
K_eq = [CH3COO-][H3O+] / [CH3COOH]
Given the following concentrations at equilibrium:
[CH3COOH] = 2.0 × 10^-1 M
[CH3COO-] = 1.9 × 10^-3 M
[H3O+] = 1.9 × 10^-3 M
Substituting these values into the equilibrium constant expression, we get:
K_eq = (1.9 × 10^-3)(1.9 × 10^-3) / (2.0 × 10^-1)
K_eq = 3.61 × 10^-6 / 2.0 × 10^-1
K_eq = 3.61 × 10^-6 × 5.0 × 10^0
K_eq = 1.805 × 10^-5
Therefore, the value of K_eq for this reaction is approximately 1.805 × 10^-5.
None of the provided answer choices match this value exactly.
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if a 10.0 g sample of cobalt -60 is left alone how much will be left after 21.2 years the half-life of cobaltt-60 is 5.3 years
Answers
If a 10.0 g sample of cobalt -60 is left alone 0.63 g will be left after 21.2 years the half-life of cobaltt-60 is 5.3 years.
What is half life period ?The term half life period is defined as the time required by a radioactive substance to transform into a different substance.
Given :
T = half life of cobalt-60
= 5.3 years
λ = decay constant for cobalt-60 = ?
decay constant is given as follows
λ = 0.693 / T
Substituting the given values
λ = 0.693/5.3
= 0.131
N₀ = initial amount of cobalt-60
= 10 g
t = time of decay
= 21.2 years
N = final amount of cobalt-60 after time "t"
final amount of cobalt-60 after time "t" is given as
N = N₀
Substituting given values
N = 10
N = 10 x 0.0622 g
N = 0.63 g
Thus, if a 10.0 g sample of cobalt -60 is left alone 0.63 g will be left after 21.2 years the half-life of cobaltt-60 is 5.3 years.
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What is a decay chain?
A. One element decaying into another, which decays into another
B. A list of radioactive substances organized by half-life times
C. An accumulation of particles emitted through radioactive decay
D. A list of radioactive substances organized by atomic weights
Answers
Answer:
A
Explanation:
A. One element decaying into another, which decays into another
how do you think the number of electrons affects an element’s reactivity?
Answers
Unbalanced Equation: CH₄ + O₂ --> CO₂ + H₂O
How many moles of oxygen are consumed when methane burns and produces 4.00 moles of carbon dioxide?
Answers
8 moles of oxygen are consumed when methane burns and produces 4.00 moles of carbon dioxide.
What is mole?In chemistry, a mole, sometimes spelt mol, is a common scientific measurement unit for significant amounts of extremely small objects like atoms, molecules, or even other predetermined particles.
The mole signifies 6.022×10²³ units, which is a very big quantity. The mole again for International System of Units is this quantity, according to the General Conference upon Weights as well as Measurements (SI).
CH₄ + 2O₂ → CO₂ +2 H₂O
moles of carbon dioxide=4.00 moles
the mole ratio between oxygen and carbon dioxide is 2:1
moles of carbon dioxide=8 moles
Therefore, 8 moles of oxygen are consumed when methane burns and produces 4.00 moles of carbon dioxide.
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10 points get it right ADVPH
Answers
Answer:
Advanced Pharmaceutics Inc
Explanation:
Advanced Pharmaceutics Inc
somehow I know this acroynom
To make a saturated solution, 30 g of sodium chloride is dissolved in 100 g of
water at 293 K. Find its concentration at this temperature.
Answers
Answer:
30%
Explanation:
As the formula for finding concentration
= (mass of solute/mass of solution)×100
= (30/100)×100
= 0.3×100
= 30%
The concentration is 30%.
How to find concentration?As the formula for finding concentration
= (mass of solute/mass of solution)×100
= (30/100)×100
= 0.3×100
= 30%
What is a concentration?
The amount of a substance, such as salt, is in a positive amount of tissue or liquid, along with blood. A substance turns into more concentrated whilst much less water is present.
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An electron is placed at the position marked by the dot. the force on the electron is?
Answers
To determine the force on an electron at a specific position, we need more information about the surrounding conditions and the correct option is option D.
The force acting on an electron can vary depending on factors such as electric fields, magnetic fields, and the presence of other charged particles.
If there are no external fields or charged particles present, the force on the electron would be negligible since there would be no significant interactions. In this case, the force would be close to zero.
However, if there are electric or magnetic fields present, the force on the electron can be calculated using the principles of electromagnetism.
The force on a charged particle in an electric field is given by the equation F = qE, where F is the force, q is the charge of the particle (in this case, the charge of an electron), and E is the electric field strength at that position. Similarly, the force on a charged particle moving in a magnetic field can be determined using the equation F = qvB, where v is the velocity of the particle and B is the magnetic field strength.
Thus, the ideal selection is option D.
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The complete question is -
An electron is placed at the position marked by the dot. The force on the electron is
a. .. to the left.
b. ..to the right
c. ..Zero.
d. ..There's not enough information to tell.
If carbon has 8 electrons is it a cation or anion?
Answers
Answer:
carbon is a -4 anion
Explanation:
It needs 4 electrons from other molecule(s)/element(s) to be stable.
Answer:
ation
Explanation: