An organism with IsCAP+P+O+Z+Y+A+/F’I+ will have a normal functioning Lac operon is false. It will have negative dominant repressor.
The Lac operon include the genes that involved in the metabolism. An organism with IsCAP+P+O+Z+Y+A+/F’I+ will have a normal functioning Lac operon is false. It will have negative dominant repressor. It will bind to operator in the presence of the lactose. The gene expressed if only when the lactose will be present and the glucose is absent.
The DNA will be released by the repressor, that allow the operator freely. The RNA polymerase sent to through the operator to see the structural elements.
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1. Identify the four key components of all fireworks.
2. In a typical aerial burst, how many explosions take place? What happens in each explosion?
3. Which of the gas laws explains what happens when an aerial shell explodes?
4. The article describes two ways in which light can be produced. What are they?
5. Name two metal ions capable of producing red colors in fireworks.
The four keys of all fire works are fuel, colorant , oxidizing agent and binder. Up to three explosions will takes place in a typical aerial burst.
What is explosive reactions?Explosive reactions are exothermic reactions, which evolve heat energy to the surroundings. The four keys components of all fireworks are fuel, colorant , oxidizing agent and binder. Up to three explosions will takes place in a typical aerial burst.
The gas laws explains what happens when an aerial shell explodes is Charles's law. This law explains that when temperature increases, gas expands and eventually explodes.
Two ions which produce red colors in fire work are lithium and strontium.
The two ways by which light can be produced are oscillation and acceleration of charged particles.
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Draw the molecule
2,5-dimethyl-4-(2-methylpropyl)octane
The structural formula of 2,5-dimethyl-4-(2-methyl propyl)octane [tex]C_{14}H_30[/tex]
The arrangement of atoms and the chemical bonds that hold them together make up a molecule's chemical structure. There are 43 bonds altogether in the 2,5-dimethyl-4-(2-methyl propyl)octane molecule (s) There are 7 rotatable bonds and 13 non-H bonds (s).
2,5-dimethyl-4-(2-methyl propyl)octane's 2D chemical structure is also known as the skeletal formula, which is the accepted nomenclature for organic molecules. In the 2,5-dimethyl-4-(2-methyl propyl)octane chemical structure, the carbon atoms are implied to be at the corner(s) and hydrogen atoms coupled to carbon atoms are not shown; instead, it is assumed that each carbon atom is connected to enough hydrogen atoms to form four bonds.
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PLEASE HELP! explain how magma produces different types of volcanoes.
The form of the volcano is determined by the rate and severity of eruptions, as well as the composition of the magma. Some volcanic eruptions are explosive, while others flow slowly. Eruptions might occur through a primary opening at the volcano's summit or through vents that arise on the volcano's slopes.
Magma is shaped via way of means of the partial melting of mantle rocks. As the rocks travel upward (or have water added to them), they begin to melt slightly. These little blobs of melt migrate upward and merge into bigger volumes that continue to travel higher.
They might congregate in a magma chamber or come straight up. Gas molecules in the magma come out of the solution and form bubbles as they rise, and the bubbles expand as they ascend. When the pressure from these bubbles becomes greater than the pressure from the surrounding solid rock, the surrounding rock cracks, enabling the magma to reach the surface.
Volcanoes may be located on both land and the ocean floor. When volcanoes erupt on the ocean floor, the expelled lava cools and solidifies, forming underwater mountains and mountain ranges. When volcanoes on the ocean floor grow large enough to rise above the water's surface, they form islands.
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predict the δhrxn for the following reaction: rb(g) + na+(g) → rb+(g) + na(g)
ΔHrxn < 0 because the IE1 for Rb is less than the IE1 for Na
ΔHrxn > 0 because the IE1 for Rb is less than the IE1 for Na
ΔHrxn < 0 because the IE1 for Na is less than the IE1 for Rb
ΔHrxn < 0 because the IE1 for Na+ is less than the IE1 for Rb+
ΔHrxn > 0 because the IE1 for Na+ is less than the IE1 for Rb+
ΔHrxn < 0 because the Ionization Energy1 for Rb is less than the Ionization Energy1 for Na
Ionization energy can be simply stated as a measurement of an atom's or ion's inclination to give up an electron or of how challenging it is to remove an electron from them. An electron is often lost when a chemical species is in its ground state.
IE declines in a group from top to bottom.
IE1 for Rb is less than the IE1 for Na.
Rb----------> Rb+ + e- IE1 = 403 kJ/mol ----------- Eq (1)
Na----------> Na+ + e- IE1 = 496 kJ/mol ------------- Eq (2)
Given reaction,
Rb(g) + Na+(g) ? Rb+(g) + Na(g)
Take Eq(1) same as above
Rb---------> Rb+ + e- IE1 = 403 kJ/mol
Take reverse of Eq (2)
Na+ + e- ------------> Na IE1 = - 496 kJ/mol
Hence,
Rb---------> Rb+ + e- IE1 = 403 kJ/mol
Na+ + e- ------------> Na IE1 = - 496 kJ/mol
Add above two equations
Rb(g) + Na+(g) ? Rb+(g) + Na(g)
ΔHrxn = 403 kJ/mol - 496 kJ/mol = -93 kJ/mol
Therefore,
Ans is ΔHrxn < 0 because the IE1 for Rb is less than the IE1 for Na
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Hydrogen peroxide does NOT make a good antiseptic for open wounds because __________.
a. catalase in human tissues neutralizes it
b. it evaporates too quickly
c. it is too toxic for human cells
d. it is too expensive for this type of use
Answer:
Hydrogen peroxide does not make a good antiseptic for open wounds because catalase in human tissues neutralizes it.
Explanation:
The neutralization of hydrogen peroxide by the enzyme catalase present in the cells of an open wound can cause damage to the cells and impede the healing process, making hydrogen peroxide not a good antiseptic for open wounds.
When it comes in contact with the living tissue, the enzyme catalase catalyzes the breakdown of the hydrogen peroxide into water and oxygen. This process can generate heat and cause damage to the cells in the area. Additionally, the breakdown of hydrogen peroxide can also generate free radicals, which can further damage the cells in the wound. Furthermore, the neutralization of hydrogen peroxide by catalase can cause the wound to dry out, making it more difficult for new cells to grow and the wound to heal.
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Classify the C- Cl bond in CCl4 as ionic, polar covalent or non-polar covalent. (EN: C = 2.5, Cl =-3,0) O ionic O polar covalent O nonpolar covalent
The difference in the electronegativity of the bond shows that the bond is polar.
How do you know a polar bond?We can say that a bond is a polar bond when the difference in the electronegativity of the bond is large. Thus we have to lok at the values of the electronegativity of the atoms that have been given and then we would try to know how to be able to obtain the polarity.
Electronegativity of Carbon = 2.5
Electronegativity of chlorine = 3.0
Difference in electronegativity = 3.0 - 0.5 = 0.5
As such the bond is polar.
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Complete and balance the following half-reaction in acidic solution NO3- (aq) → NO(9)
The complete balanced chemical reaction can be written from the half reaction in acidic solution is,
NO3- + 4H+ + 3e ----> NO + 2H2O.
The half reaction is the part of reaction which represents either an oxidation or a reduction. There are two half-reactions. one is oxidation and other is reduction. Both are necessary to completely describe a redox reaction.
NO3- ----> NO.
This reaction is not balanced and not completed.
NO3- + 4H+ + 3e----> NO + 2H2O.
This is a balanced chemical reaction. A balanced equation contains the same number of each type of atoms on both the left and right sides of the reaction arrow. To write a balanced equation, the reactants go on the left side of the arrow, while the products go on the right side of the arrow.
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hydrogen gas reacts with oxygen gas to form water. At stp, how many liters of hydrogen gas react with 32.4L of oxygen ga
Answer:
64.8L of H2
Explanation:
We need to start with a balanced chemical equation. I arrive at the following:
O2 + 2H2 = 2H2O
This tells us that we'll get 2 moles of H2O for every 1 mole O2 consumed, and that we'll need 2 moles of H2 for every 1 mole of O2. For this question, the important ratio is 2 moles of H2 for every 1 mole of O2. We know we have 23.4 L of O2. Let's convert that into moles O2 by using a very useful conversion factor that works for ALL gases at STP (Standard Temperature and Pressure). The conversion is 22.4M/L. That means that at STP we'll have 1 mole of that gas if we have 22.4L of the gas. And that works for all gases. [1mole = 22.4L at SDTP for all gases].
So let's calculate the moles of oxygen gas present in 32.4L:
(32.4L)*(1 mole/22.4L)= 1.45 moles O2.
If all the oxygen reacts, we'll need twice the number of moles of H2, as per the balanced equation.
(1.45 moles O2)*(2) = 2.90 moles H2
Convert 2 moles H2 at STP into moles H2: (2.90 moles H2)*(22.4L/mole) = 64.8L of H2.
Translate the triangle.
Then enter the new coordinates.
C (5,2)
<-6,1 >
B(6,1)
A (8,4)
'A' ([?], [])
B'([_], [_])
C'([ ], [ ])
In the graph, the triangle is shown. The new coordination is A' (-3,3) B' (-2,-1) C' (-6, -2).
What is coordination?The first quadrant, second quadrant, third quadrant, and fourth quadrant are the only names given to the four quadrants of the coordinate plane.
Start at the point, then move up or down a vertical line until you reach the x-axis. Your x-coordinate is shown there. To get the y-coordinate, repeat the previous step while adhering to a horizontal line.
Simply put, coordinates are the numbers that identify each X, Y, and optionally Z position of an object. Its metric refers to the set of coordinates that characterizes an object.
Therefore, the new coordinations are A' (-3,3) B' (-2,-1) C' (-6, -2).
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In scientific notation, the radius of the Sun is what?
Answer:
6.96 x 10^5 km (in 3sf)
Explanation:
Exact radius of the sun is 695,508 kilometers.
Hence, in scientific notation, it should be 6.95508 x 10^5 km
hence 6.96 x 10^5 km in 3sf.
Some people with alcohol dependence report that just the smell of alcohol creates a powerful sense of well-being, increasing the desire to drink the alcohol. Explain this reaction using a classical conditioning model, and describe one possible way to decrease the reaction. Use the following terms in your answer:.
Some people with alcohol dependence report that just the smell of alcohol creates a powerful sense of well-being, increasing the desire to drink the alcohol because of The UCR to the UCS of alcohol is a sense of well-being, and the CS of alcohol is likely to eventually elicit the CR of a sense of well-being.
Without any prior conditioning, UCS automatically cause (UCR) a sense of well-being. Alcohol (UCS) causes the UCR.
The UCR (feeling of well-being) is likely to eventually be evoked by the smell of alcohol because it is frequently coupled with actual alcohol (UCS). The UCR to the UCS of alcohol is a sense of well-being, and the CS of alcohol is likely to eventually elicit the CR of a sense of well-being.
The conditioned response will be eliminated by repeatedly pairing the CS (alcohol smell) with the UCS (alcohol) (CR). As a result, extinction has occurred.
Your question is incomplete but most probably your full question was
Some people with alcohol dependence report that just the smell of alcohol creates a powerful sense of well-being, increasing the desire to drink the alcohol. Explain this reaction using a classical conditioning model, and describe one possible way to decrease the reaction. Use the following terms in your answer:
A. Unconditioned stimulus
B. Unconditioned response
D. Conditioned stimulus
E. Conditioned response
F. Extinction
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Determine the shape and approximate bond angles for a compound that has a central carbon atom with double bonds to two sulfur atoms
If zn and h2so4 undergo a single-displacement reaction, what is the balanced equation?.
A single replacement reaction is one in which one element is replaced by another. The reaction in the balanced equation is Zn(s) + H2SO4(aq) ZnSO4(aq) + H2 (g).
When an element from a compound is replaced by another element from the reactant to create a product, the reaction is referred to as a single displacement.The replacement or substitution is determined by the activity series or reactivity. The weaker and less powerful element will be replaced with the more powerful one.The equation for the balanced single-displacement response isH2SO4(aq) + Zn(s) ZnSO4(aq) + H2 (g)Here, zinc replaces hydrogen because it is more reactive than hydrogen and creates zinc sulfate as a result.Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g), is the best choice.Learn more about the single-displacement reaction here:
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A single displacement reaction is one in which one element is replaced by another. The reaction in the balanced equation is Zn(s) + H2SO4(aq) ZnSO4(aq) + H2 (g). So, choice B is the right one.
When an element from a compound is replaced by another element from the reactant to create a product, the reaction is referred to as a single displacement reaction.
The replacement or substitution is determined by the activity series or reactivity. The weaker and less powerful element will be replaced by the one with greater strength.
The equation for the balanced single-displacement reaction is
H2SO4(aq) + Zn(s) ZnSO4(aq) + H2 (g)
Here, zinc replaces hydrogen because it is more reactive than hydrogen and creates zinc sulphate as a result.
The balanced equation is therefore option B: Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g).
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