The type of adaptation shown by the dart frog is physiological adaptation while the one shown by the Hosta plant is structural adaptation.
Types of adaptationAdaptation generally refers to the process by which living organisms adjust in order to continue to survive in an environment.
There are 3 main types of adaptations:
Behavioral adaptationsPhysiological adaptationsStructural adaptationsIn behavioral adaptation, organisms change their behavior for their continued survival in their environments. Without these modifications, they may find it to survive and reproduce in the environment.
Physiological adaptation refers to changes that are encoded into the system of organisms. Changes that are not behavioral nor structural but ensure the continued survival of organisms in their environment.
Structural adaptation refers to the modification of physical structures for continued survival. These modifications become necessary because the environment keeps changing.
Thus, bright coloration as a warning to predators by the dart frog is a physiological adaptation while the development of big leaves that ensures that as much sunlight as possible is received by the Hosta plant is a structural adaptation.
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A baseball catcher puts on an exhibition by catching a 0.15 kg ball dropped from a helicopter at a height of 101 m. What is the speed of the ball just before it hits the catchers glove 1.0 m above the ground?
What chemical reaction occurs when the positive ion from one compound replaces the positive ion of the other compound to form two new compounds. represented by AB + CD = AD + CB
synthesis
decomposition
single replacement
double replacement
combustion
The chemical reaction that occurs when the positive ion from one compound replaces the positive ion of the other compound is double replacement
What is a double displacement reaction?
This is a type of reaction in which there is an exchange of ion between the reacting agent. The ion in one of the reactant replaces or displaces the ion in the other reactant to produce two new products.
The reaction between sulphuric acid and potassium hydroxide illustrates a double displacement reaction
H₂SO₄ + 2KOH —> K₂SO₄ + 2H₂O
From the above equation, we can see that K and H exchange to produce K₂SO₄ and H₂O
With the above illustration we can answer the given question as follow
AB + CD = AD + CB
The above reaction is a double displacement reaction since A and C exchange to produce AD and CB
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A certain oxygen atom has the electron configuration 1s22s22px22py2. How many unpaired electrons are present?.
There are no unpaired electrons present in this atom of oxygen.
The molecular orbital configuration of the oxygen atom given is,
1s²2s²2px²2py².
As we can see, there is not electron in the configuration which is alone in the orbital, they all are present in pairs. So, there are no unpaired electrons present.
This state of the oxygen atom when there are no unpaired electron are present, this could be the ground state of the atom.
The ground state of the atom is when the potential energy of the electrons of the atom is minimum.
In this configuration, no electron is unpaired, all the electrons are paired.
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Under what conditions is the change in internal energy, δerxn , equal to the heat evolved in a chemical reaction?.
If there is no change in pressure or no change in volume of the system, then the heat of the reaction will be equal to the change in internal energy of the system.
According to the first law of thermodynamics,
The total change in internal energy of the system is equal to the sum of the heat added to the system and the work done by the system.
So, we can write,
ΔH = ΔQ + W
Where,
ΔH is the heat of the reaction,
ΔQ is the heat evolved or heat given,
W is the work done by the system,
We know work by the gas is,
W = VΔP or PΔV
Where V is the volume of the gas and P is pressure of the gas.
So, for the heat of the system to be equal to that of the hear evolved in the system.
W = 0
For W to be zero,
Either, ΔV or ΔP has to be zero,
So, we can conclude that if change in the pressure of the system of the change in volume of the system is zero.
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3. Hydrogen peroxide forms gas bubbles when it is added to blood.
The other reaction product is water. Inserting a glowing splint
into a sample of this gas causes the splint to relight. 20
(a) Identify the gas.
(b) Classify the reaction.
(c) Write a balanced chemical equation for this reaction.
The gas is oxygen which causes the splint to relight and the reaction is of hydrogen peroxide resulting into water and oxygen.
Why hydrogen peroxide forms gas bubbles when it is added to blood?Hydrogen peroxide on reaction and decomposition releases water and oxygen .The reaction followed is something like this: 2H2O2= 2H2O + O2 , putting hydrogen peroxide on a cut.And the bubbles are actually symptomizing that the solution is killing bacteria that is it prevents bacteria to grow.And that solution is true solution which consist of various components in the reaction that is being done.Hence the gas is oxygen , and the reaction is 2H2O2= 2H2O + O2, and its the oxygen gas causing the splint to relight.To know more about hydrogen peroxide visit:
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when given the symbol Cl-37, what is the mass and charge of this symbol?mass is 37 and charge is 37mass is 17 and charge is 37mass is 0 and charge is 0mass is 37 and charge is 17
Given the symbol Cl-37, the element is Cl, but there is no information about its charge. When this is like that, it is implicit it is an atom, that is, it is neutral, its charge is 0.
The number indicates is the mass number, so its mass is 37.
So, mass is 37 and charge is 0.
What term describes the difference of the protons and electrons in an element?
Electrons and proton are a type of subatomic particle with a negative and positive charge. Protons are held together in the atom's nucleus by the nuclear force. A subatomic particle without charge is the neutron.
What are electrons give example?The electron, the smallest constituent part of an atom, has a negative charge. Protons and electrons are present in an atom in a neutral state in an equal number. One electron and one proton are all that the hydrogen ion has. On the other hand, the atomic nucleus possesses 92 protons, that means 92 electrons.
Where are electrons found?Electrons are present outside of the atom's nucleus, in contrast to neutrons and protons that are contained inside the nucleus at its center. Negative electrons are drawn to the positively charged nucleus so because electric charges of opposite sign attract one another.
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Beryllium, the first element in group 2, has an atomic number of 4. The second element in this group has an atomic number of.
Beryllium, the first element in group 2, has an atomic number of 4. The second element in this group has an atomic number of 12.
In the field of chemistry, atomic number can be described as the number of protons that is present in the nucleus of an atom.
The atomic number of Beryllium is 4 as it has 4 protons in its nucleus.
The second member of the group 2 elements in the periodic table is Magnesium. Magnesium has an atomic number of 12 because it has 12 protons in its nucleus.
The atomic number is represented by the letter Z usually. The atomic number is usually mentioned in a periodic table at the top-left.
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Beryllium, the first element in group 2, has an atomic number of 4. The second element in this group has an atomic number of?.
Beryllium exists in Group 2 (Column 2) with the atomic number 4.
The atomic number of the next element in the group would be right below it, Magnesium (Mg). Magnesium contains the atomic number 12.
What is meant by atomic number?The charge number of an atomic nucleus is the chemical element's atomic number, also known as nuclear charge number. This is the number of protons present in the nucleus of each atom of that element, or the proton number, for conventional nuclei. Ordinary chemical elements can be uniquely identified by their atomic number.
The number of protons in an atom determines its atomic number, and isotopes have the same atomic number but different numbers of neutrons.
Beryllium exists in Group 2 (Column 2) with the atomic number 4.
The atomic number of the next element in the group would be right below it, Magnesium (Mg). Magnesium contains the atomic number 12.
The atomic number is the small number on the top left corner of the square of the element.
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what type of reaction is 2 C5H5 + Fe --> Fe(C5H5)2
Answer:
Combination or Synthesis
Explanation:
It is a combination because 2 reactants are combining together to form the product.
Conservation in a reaction means that the number of each type of atom is equal on each side of the arrow. This is a _____
Answer: There is equal number of each type of atom on the reactant and product side.
Explanation:
what elements does KOH contain
Answer:
K- Potassium
O- Oxygen
H- Hydrogen
KOH is called as Potassium Hydroxide and it contains K (Potassium), O (Oxygen) and H (Hydrogen) elements.
Caustic potash is a common name for potassium hydroxide, an inorganic compound with the formula KOH. The majority of its industrial and niche applications capitalize on its caustic nature and acid reactivity. It important because it is the starting point for most liquid and soft soaps, as well as many chemicals that contain potassium.
It is a dangerously corrosive white solid. KOH has a high level of thermal stability. Melt-casting it into pellets or rods with low surface areas and easy handling properties is common due to its high stability and low melting point. Because KOH is hygroscopic, these pellets become tacky when exposed to air.
Its dissolution in water is strongly exothermic, with water and carbonates accounting for the remaining 90% purity. A common name for concentrated aqueous solutions is potassium lye. Solid KOH does not easily dehydrate even at high temperatures.
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can someone please help me with this problem !!!!!!???????
After connecting the battery to the wire, the student brings a few pieces of iron near the iron nail. The statement which best describes what will happen to the iron pieces is that: B. The Iron nail behaves like a magnet that attracts the pieces of iron.
What is the law of magnetism?The law of magnetism states that the unlike (different) poles of a magnet would attract each other while like poles of a magnet would generally repel one another.
This ultimately implies that, two north (N) or south (S) poles of a magnet would repel one another while a north (N) and south (S) of a magnet would attract each other.
Based on the law of magnetism, we can reasonably infer and logically deduce that if this student should bring a few pieces of iron near the iron nail after connecting the battery to the wire, the iron nail would behave like a magnet by attracting the pieces of iron because they are oppositely charged.
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Complete Question:
After connecting the battery to the wire, the student brings a few pieces of iron near the iron nail. Which statement describes what will happen to the iron pieces?
answer choices
The battery behaves like a magnet that repels the pieces of iron.
The Iron nail behaves like a magnet that attracts the pieces of iron.
The iron nail produces electric current that attracts the pieces of iron.
The coil rotates which produces electric current that repels the pieces of iron.
thomas edison invented the light bulb only because he experimented with thousands of different kinds of materials for a filament before he found one that worked (carbon). this shows that at the most basic level, we can solve problems through
we can solve problems through trial and error
American businessman and inventor Thomas Alva Edison. He created several innovations in the production of electric power, mass communication, sound recording, and motion pictures. Thomas Alva Edison, one of history's most well-known and prolific innovators, made significant contributions to contemporary living by creating the phonograph, motion picture camera, incandescent light bulb, and telephone as well as enhancing the telegraph and telephony. The light bulb was created by Thomas Edison, who is best recognized for this invention. Edison, a brilliant inventor, made a thousand fruitless efforts to create the light bulb. How does it feel to fail 1,000 times, a reporter asked? I didn't fail 1,000 times, Edison said in response.
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n the laboratory you dissolve 23.4 g of manganese(ii) sulfate in a volumetric flask and add water to a total volume of 500 ml. what is the molarity of the solution?
The molarity of the solution is 0.619 M if we dissolve 23.4 g of manganese(ii) sulfate in a volumetric flask and add water to a total volume of 500 ml.
What is molarity means?The molarity is equal to the moles of a solute divided by the total number of liters in the solution. The molarity of a material quantifies its concentration in a given volume of solution.
Why do we use molarity?Molarity is the concept that describes the relationship between moles of a certain solute and the volume of the supplied solution. To calculate your molarity, you must start with moles and volumes, moles and milliliters, and mass and volumes.
Molarity formula and units
The units of molarity are M or mol/L.
Molarity equation
M = moles solute/liters solution
Molarity = number of moles of solute divided by the volume of solution in a liter
= number of moles of solute × 1000/ volume of solution in the liter
= number of moles
= Mass/ molecular weight
= 23.4/151
= 0.155moles
Molarity = 0.155× 1000/250
= 0.619 M
The concentration of manganese ion = concentration of sulphate ion = 0.619 M
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what is true of atoms, elements, and minerals? multiple select question. when a mineral is separated into its component atom parts, it is still a mineral. an element is a type of atom that has a specific number of protons. if a single atom of an element is broken apart, its pieces are still recognizable as that element. an atom is the smallest unit of an element that retains the characteristics of that element. minerals are composed of chemically bonded elements.
Correct statements are:
An element is a type of atom that has a specific number of protons.
An atom is the smallest unit of an element that retains the characteristics of that element.
Minerals are composed of chemically bonded elements.
When a mineral is separated into its component atom parts, those parts will act according to the element they belong to, and the elements have properties that differ from the original mineral, because of chemical bonds formed during the creation of the mineral.
If a single atom of an element is broken apart, its pieces are protons, neutrons, and electrons, particles that are universal for all elements, and there is no way to distinguish, for example, iron neutrons from hydrogen neutrons. In cases of radioactive decay, atoms of elements may break down to form new elements.
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Respiration, which releases the energy in food molecules, usually involves _________
Respiration, which releases the energy in food molecules, usually involves energy and enzymes.
What is respiration?Respiration is the process by which cells obtain chemical energy by the consumption of oxygen and the release of carbon dioxide.
Respiration is the major process through which living organisms obtain their energy. They do this by breaking down food ingested.
Cellular respiration combines glucose and oxygen to synthesise carbondioxide and water as products. This process synthesize a large amount of energy, however, it utilizes energy as well.
Therefore, energy and enzymes are used up in the process of cellular respiration.
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Determine the energy of a photon whose frequency is 5.94x10^17Hz. Answer in units of J
Answer:
[tex] \huge{ 3.935 \times {10}^{ - 16} J}[/tex]
Explanation:
The energy of the photon can be found by using the formula
E = hf
where
E is the energy
f is the frequency
h is the Planck's constant which is
6.626 × 10-³⁴ Js
From the question the frequency is
5.94x10^17Hz
We have
[tex]E = 6.626 \times {10}^{ - 34} \times 5.94 \times {10}^{17} \\ = 3.935 \times {10}^{ - 16} J[/tex]
Hope this helps you
Draw the electron configuration for a neutral atom of chlorine.
The electron configuration for a neutral atom of chlorine is 1s² 2s² 2p⁶ 3s² 3p⁵.
Atomic number of Chlorine is 17. to write the electronic configuration of chlorine we need to know the number of electrons in chlorine atom. the atomic number of chlorine is 17 therefore there are 17 electrons. the first two electron enter in 1s since s can hold only 2 electrons then next two electron will enter in 2s . the next six electrons will enter in 2p since p can hold six electrons . and next two electron in 3s now reaming 5 will enter in 3p. therefore the electron configuration for a neutral atom of chlorine is 1s² 2s² 2p⁶ 3s² 3p⁵.
Thus, the electron configuration for a neutral atom of chlorine is 1s² 2s² 2p⁶ 3s² 3p⁵
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CAN someone please help me !!!!!!!!!!!
Yes, the motor would run faster because the increased electrical force increases the magnetic force in the motor. That is option B.
What are electrical forces?An electrical field is defined as the type of field that is surrounded by charged particles which may be negatively or positively charged.
A battery is an electron chemical cell that has the ability to generate electrical energy through chemical reaction in its cells.
A magnetic force is defined as the type of force generated through the action of moving electric charges or magnetic materials.
When the number of batteries in a circuit is being increased, there would be increase in the input voltage leading to an increase in the magnitude of the speed.
Therefore, the motor is expected to run faster because of the increased magnetic force of the motor which is caused by increase electrical force.
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please help ASAP! Thank you
Answer: I think it’s C
Explanation:
I think it’s C because animal cells do not have a cell wall and the cell wall is unique to plant cells
what is the proper definition of an isotope? group of answer choices atoms in which the number of protons is different from the number of neutrons. atoms with a mass number greater than the atomic number. atoms of an element with the same number of protons but different number of neutrons. atoms that spontaneously emit radiation.
Isotopes are atoms of an element with the same number of protons but a different number of neutrons.
Isotopes are different atom types that share the same atomic number and place in the periodic table but have different quantities of neutrons in their nuclei, resulting in various nucleon numbers or atomic masses.
Stable and unstable isotopes are the two basic categories of isotopes. 254 stable isotopes are known. Scientists refer to all synthetic (lab-made) isotopes as radioisotopes since they are radioactive due to their instability.
Examples of isotopes include carbon 12, which has 6 neutrons, carbon 13, which has 7 neutrons, and carbon 14, which has 8 neutrons. Carbon 14 is the radioactive isotope while the rest are stable.
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a gas has an initial volume of 8.50l. what is the final volume if 355j of work is done on the gas by a constant external pressure of 1.00atm? round the answer to three significant figures.
The pressure - volume work can be determined using the change in volume ΔV and a constant pressure P. Here, the final volume for the work done of 355 J at a pressure of 1 atm is 346 l.
What is pressure -volume work done?Work done on system or by a system can be thermodynamically determined using the equations connecting the variables temperature, T pressure p and volume V.
A pressure-volume work done is the expansion or compression of a gas at constant pressure and this can be mathematically written as:
W = - P ΔV.
= -P (V2 - V1)
It is given that the initial volume V1 = 8.50 L at a pressure of 1 atm and the work done for the expansion to volume V2 is 655 J. Thus, the final volume V2 is calculated as follows:
- 355 J = 1 atm ( V2 - 8.50 L)
V2 = -355 + 8.50 L
= 346.5 L.
Here, the volume is increased highly from the initial volume so this expansion and is work done by the system. Therefore, the final volume of the system is 346 liters.
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What is 11.75 millimeters in meters
Answer:
in meters its 0.01175
Explanation:
Answer:
0.01175 meters
Explanation:
Quantum Theory proposes electrons may
be found in orbitals, which are based on
what?
Bohr's planetary model
Thompson's Plum Pudding Model
the probability of finding an electron in an
area around the nucleus
The Heisenberg-Rutherford Model
A quantum is the smallest discrete unit of a phenomenon (plural: quanta). For instance, a photon is a quantum of light, while an electron is a quantum of electricity. Quantum is a Latin word that means "quantity" or "how much?" Anything that can be measured is something that can be quantified.
How does quantum theory connect to Bohr's model?Bohr's hypothesis, often known as quantum theory, postulated that electrons move around the nucleus according to the classical principles, but with restrictions on the orbits they can take and the energy they lose as radiation when they change orbits.
The Bohr model, also known as the Rutherford-Bohr model, was first proposed by Niels Bohr and Ernest Rutherford in 1913 and describes an atomic system with an orbiting system of electrons and a small, dense nucleus that is similar to the Solar System in structure but is attracted by electrostatic forces rather than gravity.
A small positively charged nucleus is encircled by rotating negatively charged electrons in set orbits, according to the Bohr Atomic Model. He came to the conclusion that an electron will have more energy if it is placed far from the nucleus and less energy if it is located close to the nucleus.
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what statements are always true about limiting reactants? select one or more: the limiting reactant is completely used up in the reaction. there will be an excess of other reactants at the end of the reaction. the limiting reactant is always the same for a given reaction. the limiting reactant dictates the amount of product. the limiting reactant has a lower mass than other reactants.
The correct statements are:
The limiting reactant is completely used up in the reaction.
There will be an excess of other reactants at the end of the reaction.
The limiting reactant dictates the amount of product.
Which reactant will be the limiting reactant depends on the molar ratios of all the reactants in the experiment (and the coefficients in the balanced reaction equation), so it will absolutely vary depending on the reaction setup and conditions, which is why it cannot always be the same for a given reaction.
Because the molar ratios of the reactants dictate which of them will be the limiting one, it is not true that the one with the lowest mass will always be the limiting reactant.
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Fatty acids that are broken down for energy production are utilized for which aspects of cellular respiration? choose all that apply.
Fatty acids that are broken down for energy productions are utilized for glycolysis.
What is glycolysis?Although the multiple choices are missing, you might be referring to these multiple choices: (a) Fermentation, (b) Glycolysis, (c) Pyruvate oxidation, (d) Citric acid cycle, (e) Electron transport chain. In that case, the correct answer is (b) Glycolysis.
Glycolysis refers to the breakdown of glucose or sugar (C₆H₁₂O₆), releasing energy and pyruvate (CH₃COCO₂H). Glycolysis is the first stage in the process of cellular respiration in organisms. Cells use glycolysis as a method to produce energy. Glycolysis is found in the great majority of organisms alive today.
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Suppose you prepare a 5 μ m solution of red dye and a 5 μ m solution of blue dye and observe them in two identical test tubes. Why might the blue dye solution appear more intensely colored than the red dye solution?.
The molar absorptivity of the blue dye is greater than the molar absorptivity of the red dye.
The Beer-Lambert Law equation is as follows
A = εcl
where; ε= molar absorptivity
A= absorbance
l = optical path length
c= molar concentration
The molar absorptivity of the blue dye;
1.30 x 10⁵ M⁻¹cm⁻¹
The molar absorptivity of the red dye :
2.13 × 10⁴ cm⁻¹M⁻¹
This is reason that the blue dye solution appear more intensely colored than the red dye solution
Following are the factors that can affect the molar absorptivity:
1.The amount of light absorbed by the substance for a specific wavelength.
2.The distance that the light travels through the solution.
3.The concentration of the absorbing solution per unit volume.
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when 20 grams of a salt is dissolved in 95 grams of water, the temperature of the solution decreases from 40oc to 0oc. how much heat is absorbed? the specific heat of the solution is 1.1 cal/goc.
When 20 grams of a salt is dissolved in 95 grams of water, the temperature of the solution decreases from 40oc to 0oc. 880 calories heat is absorbed, the Specific Heat of the solution is 1.1 Cal/goc.
delta t = T f - T i
= 0 - 40
= -40 degrees Celsius
c = 1.1 Cal/g degrees Celsius
m = 20 grams
heat absorbed (q) = mc(delta)t
q = 20 * 1.1 * -40 degrees Celsius
q = 880 Cal
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the molar mass of the metal hydroxide m(oh)4 is 118.97 g/mol. what is the molar mass of the sulfide of this metal? provide your answer in decimal notation, rounded to 2 decimal digits (i.e. to the hundredths place).
The molar mass of the metal Sulfide is 83.02g/mol.
The molar mass of Sulfide is the addition of molar mass of Sulphur with molar mass of given metal which is given by subtract the molar mass of hydroxide from total molar mass of metal hydroxide.
The molar mass of the [tex]M(OH)_{4}[/tex] =118.97g/mol
Molar mass of Oxygen = 15.999g/mol
Molar mass of Hydrogen= 1.008g/mol
Therefore:
molar mass of [tex]M(OH)_{4}[/tex]= (molar mass of M) +4(molar mass of oxygen + molar mass of hydrogen)
118.97=(molar mass of M)+(15.999 x4)+(1.008x4)
118.97=(molar mass of M)+(63.996+4.032)
118.97-68.028=molar mass of metal(M)
molar mass of Metal=50.942 g/mol (that is Vanadium)
Molar mass of metal + molar mass of Sulphur to give metal sulfide.
50.942+32.06=83.02g/mol
Hence, the molar mass of Vanadium Sulfide([tex]V_{2} S_{5}[/tex] ) is 83.02g/mol.
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