Answers
Kinect-molecular theory hypothesis:
- The formation of a gas occurs by a large number of molecules;
- Gas molecules have a negligible dimension, which means that the volume occupied by them is very small, almost insignificant;
- These gases move in a discontinuous and random way, thus occupying the entire volume of the container where they are found, having a rectilinear and uniformly varied movement;
- They are independent, they only interact with each other when a collision occurs;
- Collisions between molecules and molecules and between molecules and container walls are elastic collisions, which cause the kinetic energy of the molecules to remain constant.
Having seen these statements, the answers can only be:
The warmer a glass of water, the faster a drop of ink will spread through the water.
The colder a room is, the longer it would take to smell a spray of perfume from the other side of the room.
Related Questions
what is the functional group
Answers
As you can see from -COOH
DONT DO A RANDOM ANSWER OR ILL REPORT, ILL GIVE BRAINLIEST AND ALOT OF POINTS IF YOU SAY THE CORRECT ONE!! students who enjoy completing worksheets with specific directions are likely to be what kind of thinkers?
Answers
In which of the following intermolecular interactions will polar molecules, such as water, commonly participate? (Mark all that apply A. Hydrogen bonding with non-polar molecules B. Hydrogen bonding with polar molecules C. Van der Waal interaction with polar molecules D. Electrostatic interaction with lonic compounds
Answers
B. Hydrogen bonding with polar molecules is the inter molecular interactions will water participate commonly with polar molecules.
Why does water pull polar molecules toward it?Polarity causes the water molecules to attract each other. Water is polar despite possessing a zero net charge because of the structure of its molecules. The molecule's hydrogen ends are positive, and its oxygen ends are negative. Water molecules are attracted to other polar molecules and to one another as a result.
What polar molecules are drawn to water?The polarity of water enables hydrogen bonds to form whenever adjacent water molecules are drawn to each other by their opposing charges. Other polar molecules and ions, such as many biomolecules including sugars, nucleic acids, and certain amino acids, are also attracted to or attracted by water.
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Question 9 of 10
Which of the following is an example of a Brønsted-Lowry acid?
OA. NH4+
OB. F
OC. BF3
OD. NH3
SUBMIT
Answers
The correct answer is option A, \(NH_{4}^{+}\) which is an example of a Brønsted-Lowry acid.
Brønsted-Lowry acid:
According to the Brønsted-Lowry theory, an acid is a substance that donates a proton (\(H^{+}\)), while a base is a substance that accepts a proton.
\(NH_{4}^{+}\)can act as an acid because it can donate a proton to a base. In this case, \(NH_{4}^{+}\)can donate a proton to a water molecule, forming \(NH_{3}\) an H3O+. Therefore, \(NH_{4}^{+}\)is an example of a Brønsted-Lowry acid.
Option B, F, is a Brønsted-Lowry base because it can accept a proton to form HF. Option C, \(BF_{3}\), is not an acid or a base according to the Brønsted-Lowry theory because it does not contain any hydrogen atoms that can donate protons. Option D, \(NH_{3}\), is a Brønsted-Lowry base because it can accept a proton to form \(NH_{4}^{+}\).
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Complete question is: \(NH_{4}^{+}\) is an example of a Brønsted-Lowry acid.
Which of the following statements about subatomic particles are correct? (select all that apply)
A. Neutrons and protons are the only charges subatomic particles
B. The charge on a proton is equal in magnitude and opposite in sign to that of an electron
C. The mass of a proton is similar to that of a neutron
D. The mass of a neutron is slightly greater than that of an electron
Answers
The following statements about subatomic particles are correct:
B. The charge on a proton is equal in magnitude and opposite in sign to that of an electron
C. The mass of a proton is similar to that of a neutron
D. The mass of a neutron is slightly greater than that of an electron.
Subatomic particles refer to the basic building blocks of matter that make up atoms. The main subatomic particles are:
Protons: Positively charge particles found in the nucleus of an atom. The number of protons in an atom determines the atomic number, and thus the identity, of the element.
Neutrons: Neutral particles found in the nucleus of an atom. The number of neutrons in an atom can vary, resulting in isotopes of the same element.
Electrons: Negatively charged particles that orbit the nucleus of an atom. The number of electrons in an atom determines its chemical properties and reactivity.
These subatomic particles interact with each other through electromagnetic forces to form the atoms and molecules that make up matter. Understanding the behavior and interactions of subatomic particles is key to understanding the properties and behavior of matter on a macroscopic scale.
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What physical property is characteristic of all of the elements in the group located in the rightmost column of the periodic table?
Answers
The physical property that is characteristic of all of the elements in the group located in the rightmost column of the periodic table is the gaseous state at room temperature.
What are Physical properties?Physical properties may be defined as those properties of matter that do not involves any chemical manifestation or appearance within the element. These properties are measurable and state the alteration between momentary states. Some examples of physical properties are as follows:
Physical appearance or color.Hardness of elementDensity.Melting and boiling points.Electrical conductivity.The groups located in the rightmost column of the periodic table are known as the halogens and the noble gases. These elements are typically gaseous in phase at room temperature. Apart from this, halogens also have high electronegativities because these elements have seven electrons in their valence electrons.
Therefore, the gaseous state at room temperature is the physical property that is characteristic of all of the elements in the group located in the rightmost column of the periodic table.
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1)Grignard reagent when reacted with methanol will yield A) ethanol (B) secondary alcohols (C) tertiary alcohols (D ropanol (E) primary alcohol
Answers
When the reaction of Grignard reagent reacted with methanol will yield a tertiary alcohol. Therefore, Option C tertiary alcohol is correct.
Contains a carbon-metal link, Grignard reagents are chemicals used in catalysis. They generally result from the anhydrous reaction of magnesium metal with an alkyl or aryl halide. Because of their high reactivity, Grignard reagents frequently act as nucleophiles in organic reactions.
An alkyl group from a Grignard reagent binds to the oxygen atom of methanol (CH3OH) when it interacts with the methanol, breaking the carbon-metal connection. A precursor alkoxide is created as a result. The equivalent alcohol is then produced by protonating the intermediate alkoxide.
The reaction of a Grignard reagent with methanol leads to the formation of a tertiary alcohol.
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Which of the following sign does not indicate that a chemical change has happened .
a.a change in state
B.change in color or odor
3.foaming or bubbling
D. Production of heat or light
Answers
Answer:
A.)
Explanation:
A change in state may seem like a chemical reaction, but it is actually a physical change. "A change in state" is basically saying that the appearance of whatever the item is, is taking a change physically. Whether this item was going through some examples of a physical change, which would be:
melting (solid to liquid), evaporation (liquid to gas), condensation (gas to liquid), freezing (liquid to solid), deposition (gas to solid), and sublimation (solid to gas).
A change in color, odor, taste, chemical compound, and temperature all represent a chemical reaction, because these are all things that are happening within the the item that is being given the product of a chemical change.
Think of it this way: internal changes within the product: chemical. External changes within the product: physical.
I hope this helps.
A 550.0 mL sample of gas at 40.0 °C and 895 torr is transferred to a second vessel where the temperature is 0.0 °C and the pressure is 745 torr. What is the volume of the second vessel?
Answers
The volume of the second vessel is approximately 450 mL. In physics and chemistry, pressure is an important concept that is used to describe the behavior of gases, liquids, and solids under different conditions.
What is Pressure?
It is a scalar quantity and is expressed in units such as pascals (Pa), pounds per square inch (psi), atmospheres (atm), or torr. Pressure is created by the collision of particles (atoms or molecules) with the walls of a container, and it can be influenced by factors such as temperature, volume, and the number of particles present.
The first step is to use the combined gas law to relate the initial conditions to the final conditions:
(P1V1)/T1 = (P2V2)/T2
where P is pressure, V is volume, and T is temperature, with subscripts 1 and 2 representing the initial and final conditions, respectively.
Plugging in the given values, we get:
(895 torr)(550.0 mL)/(313.15 K) = (745 torr)(V2)/(273.15 K)
Solving for V2, we get:
V2 = (895 torr)(550.0 mL)/(313.15 K) * (273.15 K)/(745 torr) ≈ 450 mL
Therefore, the volume of the second vessel is approximately 450 mL.
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A red laser pointer emits light at a wavelength of 488 nm. If the laser emits 7.5 10–4 J of energy per second in the form of visible radiation, how many photons per second are emitted from the laser?
a)
4.1 10–19 photons/sec
b)
5.4 10–16 photons/sec
c)
8.9 1014 photons/sec
d)
1.8 1015 photons/sec
e)
2.5 1018 photons/sec
Answers
The answer to the question, how many photons per second are emitted from the laser is d. 1.84 × 10¹⁵ photons/sec
Since the red laser pointer emits light of wavelength 488 nm, we need to find the energy of each photon from
E = hc/λ where h = Planck's constant = 6.63 × 10⁻³⁴ Js, c = speed of light = 3 × 10⁸ m/s and λ = wavelength of light = 488 nm = 488 × 10⁻⁹ m
Substituting the values of the variables into the equation, we have
E = hc/λ
E = 6.63 × 10⁻³⁴ Js × 3 × 10⁸ m/s ÷ 488 × 10⁻⁹ m
E = 19.89 × 10⁻²⁶ Jm ÷ 488 × 10⁻⁹ m
E = 0.04076 × 10⁻¹⁷ J per photon
E = 4.076 × 10⁻¹⁹ J per photon
Since the laser emits 7.5 × 10⁻⁴ J per second, the number of photons emitted from the laser per second = energy per second/energy per photon
= 7.5 × 10⁻⁴ J per second ÷ 4.076 × 10⁻¹⁹ J per photon
= 1.84 × 10¹⁵ photons/sec
The answer to the question, how many photons per second are emitted from the laser is d. 1.84 × 10¹⁵ photons/sec
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what is this chemical molecule
Answers
The color codes can help us to know the formula of the molecule.
How do you know the chemical formula from a molecular model?To determine the chemical formula from a molecular model, you need to identify the types and numbers of atoms in the molecule. Each atom is represented by a different symbol, such as H for hydrogen, C for carbon, and O for oxygen.
We do not have the color codes for the atoms in the molecule here thus we can't be able to tell for sure what the molecule should be. If we did have it, then the molecule can be known from the color codes.
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an electron in the 3rd shell of an Aluminium atom moves to the first shell in a bombardment process. Calculate the frequency of the electron the 3rd orbit and energy used in transition to the first shell.[h=6.626*10^-14J/Hz [R=3.29*10^15 Hz]
Answers
Following the quantic theory, the energy of a photon equals the radiation frequency multiplied by the universal constant. ν = 2.923x10¹⁵ Hz. E = 3.09x10¹⁵Hz.
What is quantum mechanic?It is the branch of physics that studies objects and forces at a very low scale, at atoms, subatoms, and particles levels.
Quantum mechanics states that the elemental particles that constitute matter -electrons, neutrons, protons- have the properties of a wave and a particle.
It emerges from the quantic theory exposed by Max Planck (1922), in which he affirmed that light propagates in energy packages or photons.
He discovered the Universal Planck constant, h, used to calculate the energy of a photon.
He stated that the energy of a photon (E) equals the radiation frequency (ν) multiplied by the universal constant (h).
E = νh
In the exposed example, we need to calculate the energy required to change from the 3rd shell to the first shell.
To do it, we should know that the energy in a level (Eₙ) equals the energy associated to an electron in the most inferior energy level (E₁) divided by the square of the shell number (n²).
Eₙ = E₁ / n²
E₁ is a constant. We can express it in Joules or electroVolts
E₁ = -2.18x10⁻¹⁸ JE₁ = -13.6 eVSo, let us calculate the energy at level 1 and 3
Eₙ = E₁ / n²
E₁ = -2.18x10⁻¹⁸ J / 1² = -2.18x10⁻¹⁸ JE₁ = -13.6 eV / 1² = -13.6 eV
E₃ = -2.18x10⁻¹⁸ J / 3² = -2.18x10⁻¹⁸ J / 9 = - 2.42x10⁻¹⁹ JE₃ = -13.6 eV / 3² = -13.6 eV / 9 = - 1.51 eV
The change of energy can be calculated in two ways,
Option 1
ΔE = E₁ - E₃ = 2.18x10⁻¹⁸ - 2.42x10⁻¹⁹ = 1.93x10⁻¹⁸J
ΔE = E₁ - E₃ = 13.6 - 1.51 = 12.09 eV
Option 2
ΔE = -2.18x10⁻¹⁸ J (1/nf² - 1/ni²)
ΔE =-13.6 eV (1/nf² - 1/ni²)
Where nf is the final level and ni is the initial level. When the electron passes from its initial level to its final level it is called electronic transition.
ni = 3nf = 1ΔE = -2.18x10⁻¹⁸ J (1/nf² - 1/ni²)
ΔE = -2.18x10⁻¹⁸ J (1/1² - 1/3²)
ΔE = -2.18x10⁻¹⁸ J (1 - 0.111)
ΔE = -2.18x10⁻¹⁸ J (0.888)
ΔE = - 1.937x10⁻¹⁸ J
or
ΔE = -13.6 eV (1/nf² - 1/ni²)
ΔE = -13.6 eV (1/1² - 1/3²)
ΔE = -13.6 eV (1 - 0.111)
ΔE = -13.6 eV (0.888)
ΔE = -12.08 eV
This is the energy required for the electron to go from n= 3 to n = 1. The negative sign (-) means energy (as light or photons) released or emitted.
If we want to express the result in Hz, we just need to make a conversion.
1Hz ⇔ 6.626x10⁻³⁴J ⇔ 4.136x10¹⁵ eV.
The energy required for the electron to go from n= 3 to n = 1 is 3.09x10¹⁵ Hz.
Now, we need to calculate the frequency, ν. This is, how many times the wave oscillates back and foward per second.
To do it, we will use the universal Planck constant, h, and the absolute value of the energy, E.
ν = E/h = 1.937x10⁻¹⁸ J / 6.626x10⁻³⁴ Js = 2.923x10¹⁵ 1/s = 2.923x10¹⁵ Hz.
Answer:
Frequency, ν = E/h = 2.923x10¹⁵ Hz.Energy, E = 3.09x10¹⁵ Hz.You can learn more about quantum mechanic at
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In the following atomic model, where does the strong nuclear force happen? A diagram of an atom has three rings, labeled from outside to inside A, B, and C. A and B each carry two electrons. Inside ring C are 4 protons and 5 neutrons. outside A between A and B between B and C inside C Mark this and return
Answers
Therefore, the strong nuclear force happens inside ring C.
What is atomic model?An atomic model is a scientific theory or explanation of the structure of an atom. The atomic model describes the various parts of an atom, such as the nucleus, protons, neutrons, and electrons, and how they are arranged within the atom. Different atomic models have been proposed over time as our understanding of the atom has developed. The earliest atomic model, proposed by the Greek philosopher Democritus, suggested that atoms were indivisible and indestructible particles. Later, in the early 20th century, experiments led to the development of the modern atomic model, which describes the atom as consisting of a central nucleus made up of protons and neutrons, surrounded by electrons that orbit the nucleus in shells or energy levels. This model is known as the Rutherford-Bohr model. Since then, new atomic models have been developed that take into account the complex behavior of electrons within the atom, such as the quantum mechanical model. These models are used to explain the behavior and properties of atoms and their interactions with other atoms, molecules, and electromagnetic radiation.
Here,
The strong nuclear force occurs inside the nucleus of the atom, where the protons and neutrons are located. In the given diagram, the nucleus is located inside ring C, where there are 4 protons and 5 neutrons.
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What is the name of a solid product that settles out of an aqueous solution as a result of a reaction between aqueous
reactants?
Answers
the answer is precipitate
pls help will give brainilest or however you spell it
Answers
Answer:
1. balanced
2. balanced
3. unbalanced
4. balanced
5. balanced
6. unbalanced
7. balanced
8. unbalanced
Explanation:
Calculate the frequency of light having wavelength of 456 nm.
Answers
Answer:
Calculate the frequency of light having wavelength of 456 nm.
1.22*10^8nm
Explanation:
In the given question, \(6.58 \times 10^{14}\) Hz is the frequency of the light with a wavelength of 456 nm.
Frequency is a measure of the number of cycles of a periodic wave that occur per unit of time.
The frequency of light can be calculated using the following equation:
frequency = speed of light / wavelength
where the speed of light is a constant equal to \(\rm 3 \times 10^8 \ m/s\).
To use this equation, we need to convert the wavelength from nanometers to meters:
456 nm = \(\rm 456 \times 10^{-9}\ m\)
Now, we can substitute the values into the equation:
frequency = \(\rm 3 \times 10^8 \ m/s\) / \(\rm 456 \times 10^{-9}\ m\)
= \(6.58 \times 10^{14}\) Hz
Therefore, the frequency of light with a wavelength of 456 nm is \(6.58 \times 10^{14}\) Hz.
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The parent function f(x) = 1/x has been translated 4 units to the left and 3 units down to create gpx). Which of the following
transformation functions produces g(x)?
g(x) = f(x-3) +4
g(x) = f(x+3) - 4
Oc_g(x)=f(x-4) + 3
Od g(x) = f(x+4) − 3
Answers
The original function f(x) = 1/x becomes g(x) = 1/(x+4) - 3 after the transformation.
How to solveThe correct transformation function that reflects a shift of 4 units to the left and 3 units down is g(x) = f(x+4) - 3.
This is because, in function notation, adding to the input value inside the function (x+4) shifts the function to the left, while subtracting from the output of the function (-3) shifts it down.
So, the original function f(x) = 1/x becomes g(x) = 1/(x+4) - 3 after the transformation.
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What is meant by functional group in an organic compound?
Functional group for
A) keton
B) acid anhydride
C) aldehyde
D) amide
C) alcohol
Answers
Answer:
i THINK the answer to this is C) aldehyde
Answer:
The answer is C, the guy above is correct.
Explanation:
Does anyone have a course hero account they can look at for me?
Answers
Sure, what's the questions and I can get it for you, and if need further assist you.
convert 4.56 cm to mm
Answers
Answer:
45.6 mm
Explanation:
1 centimeter = 10 millimeter
4.56 cm = x mm
x = 4.56 × 10
= 45.6 mm
What is the mass of 10.9 mol Li?
Answer in units of g.
Answers
Answer:
7.57 *10^1 g
Explanation:
10.9 mol Li *6.941 g/1 mol = 75.6569 > 7.57 *10^1 g
There are 4.67 * 10 ^ 24 hydrogen gas molecules the react with 21.0 Liters of oxygen gas STP conditions to form water. How many grams of water will form? How many moles of the excess reactant will remain after the reaction is completed?
Answers
Answer:
I am almost done
Explanation:
21.0 L
↓
2H₂(g) + O₂(g) → 2H₂O(l)
↑
4.67 × 10²⁴ moles
[This is done so the equation is balanced and the reaction can occur]
[subscripts are the number of atoms, and the coefficients are the number of molecules]
______________
Since there are about 6.02 × 10²³ moles in one mol of a substance.
4.67 × 10²⁴ / 6.02 × 10²³ =
7.7547174437 mol.
Next, we must determine the grams per mole of each substance, this can be done with the periodic table.
Since hydrogen, and oxygen gas are diatomic, they will consist of two atoms each. So the atomic mass will be multiplied by 2 to get the molecular mass. Therefore H₂ will have a molecular mass of 1.00794 × 2 = 2.01588 g/mol.
which statement correctly describes the relationship between chlorine and argon?
Answers
Answer:
Argon has a larger atomic number and a larger atomic mass.
the difference between Major purchase Consumer good
Answers
A major purchase refers to a high-cost item or service that is considered a significant investment for an individual or household, such as a car, home, or college education. Major purchases usually involve a large sum of money and require careful planning and consideration before a final decision is made.
Any item that a person or a household buys for their own use or consumption is called a consumer good. Durable and non-durable goods are two types of consumer goods that can be classified. Consumer goods are tangible items that people or households buy for their own use or consumption.
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Your question is incomplete, most probably the complete question is:
The difference between Major purchase and Consumer good?
Which of the following will increase solubility the rate of the dissolving process of a gaseous solute in solvent? (mark all that apply) please help!
Answers
Answer: The increase in solubility or the rate of dissolving process of a gaseous solute in a liquid solvent is due to following:
Increasing agitationIncreasing temperatureIncreasing solute's partial pressure over the solventIncreasing solute's surface areaExplanation:
When agitation is increased then there will occur an increase in kinetic energy of the molecules of a substance. As a result, more number of collisions will take place due to which more amount of solute will dissolve into the solvent.
Similarly, increasing the temperature will further increase the kinetic energy of molecules. Hence, this will lead to more solubility of gaseous solute into the liquid solvent.
As solubility of a gas is directly proportional to the pressure of the gas above surface of the solution. So, an increase in solute's partial pressure over solvent will also lead to an increase in solubility of gaseous solute into liquid solvent.
When surface area of solute is increased then there will be more solute particles available for reaction. Hence, more collisions will take place. As a result, rate of reaction is more due to which there will be an increase in solubility.
Thus, we can conclude that the increase in solubility or the rate of dissolving process of a gaseous solute in a liquid solvent is due to following:
Increasing agitationIncreasing temperatureIncreasing solute's partial pressure over the solventIncreasing solute's surface areaI need help I don’t understand this is hitting
Answers
Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.
Thus, They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.
In the aforementioned reaction, 2 moles of ammonia are created when 3 moles of hydrogen gas react with 1 mole of nitrogen gas.
In most cases, this reactant dictates when the reaction will end. The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants.
Thus, Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.
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Which area is most likely closest to a salt marsh or an estuary?
A. A lake.
B. A prairie
C. A coastline
D. The mountains
Answers
Answer:
coastal area with very high tides deep ocean water miles from a river's mouth
Explanation:
Marshes are a type of wetland ecosystem where water covers the ground for long periods of time. Marshes are dominated by herbaceous plants, such as grasses, reeds, and sedges(National Geographic Society).
hope dis help
How does an object become electrically charged?
A. Though the transfer of charges from one object to another
B. Through the movement of heat from one object to another
C. Through the transfer of sound from one object to another
D. Through the movement of water from one object to another
Answers
Answer: A
Explanation:
Charge cant be created or destroyed, it is only transferred between objects.
Answer:
And it's A
ok now make the first person brainiest
Explanation:
Hope this helps
Drag the red block out of the water and onto the scale to the right.Record it’s mass.Also record the level of the water while the block is removed.The mass of the block is g.When the block is removed from the water the water level is mL.
Answers
Answer:
2.5g and 25.5ml
Explanation:
Answer:
2.5 and 25.5
Explanation:
Describe an
application for the water collecting surface (where could it be used and for
what purpose?)
Answers
Answer:
Rainwater harvesting system, also called rainwater collection system or rainwater catchment system, technology that collects and stores rainwater for human use. Rainwater harvesting systems range from simple rain barrels to more elaborate structures with pumps, tanks, and purification systems. The nonpotable water can be used to irrigate landscaping, flush toilets, wash cars, or launder clothes, and it can even be purified for human consumption. With water scarcity a pressing problem for many densely populated regions, rainwater harvesting systems can supply households and businesses with water for use in dry seasons and lessen the demand on municipal systems.
Explanation: