Which acid-base chemical reaction is irreversible?(1 point)
weak acid added to water
strong acid added to water
water on its own
weak base added to water
Answers
An irreversible reaction is a reaction that tends to completion. When a strong acid added to water, the reaction is irreversible.
In chemistry, a reaction may be reversible or irreversible. In a reversible reaction, the reaction could move forward or backwards. An irreversible reaction only tends towards completion. It doesn't goes in the reverse direction.
When a weak acid or base is added to water, the reaction is reversible because the substance does not ionize to a large extent in water and the equilibrium position may lie towards the far left. However, a strong acid or base achieves 100% ionization in water hence the reaction is irreversible.
Therefore, when a strong acid added to water, the reaction is irreversible.
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Answer:
1. strong acid added to water
2. The dissociation constant for hydrochloric acid is greater than the dissociation constant for acetic acid.
3. HA, HC, HB
4. decreasing the concentration of OH– ions
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Related Questions
a spring with a spring constant of 8.50 n/m is compressed 4.00 m. what is the force that the spring would apply
Answers
The force that the spring would apply can be calculated using the formula F = kx, where F is the force, k is the spring constant, and x is the distance the spring is compressed.
we have a spring constant of 8.50 N/m and a compression distance of 4.00 m. Plugging these values into the formula, we get ,F = 8.50 N/m x 4.00 m ,F = 34 N Therefore, the force that the spring would apply is 34 N.
To calculate the force applied by a spring, we use Hooke's Law, which is given by the formula F = -k * x, where F is the force applied by the spring, k is the spring constant, and x is the compression or extension of the spring. In this case, the spring constant k is 8.50 N/m, and the compression x is 4.00 m. Plugging these values into the formula, we get F = -8.50 N/m * 4.00 m F = -34 N, the magnitude of the force is 34 N.
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a. When a magnet is plunged into a coil at speed v, as shown in the figure, a voltage is induced in the coil and a current flows in the circuit.(Figure 1)
If the speed of the magnet is doubled, the induced voltage is ________ .
Answers
When a magnet is plunged into a coil at speed v, as shown in the figure, a voltage is induced in the coil and a current flows in the circuit, If the speed of the magnet is doubled, The induced voltage will increase.
According to Faraday's law of electromagnetic induction, the magnitude of the induced voltage in a coil is directly proportional to the rate of change of magnetic flux passing through the coil.
The magnetic flux is influenced by factors such as the strength of the magnetic field and the speed at which the magnetic field changes.
When the magnet is plunged into the coil at a certain speed, the magnetic field passing through the coil changes, inducing a voltage in the coil.
If the speed of the magnet is doubled, the rate of change of the magnetic field passing through the coil will also double. As a result, the induced voltage in the coil will increase.
The relationship between the induced voltage and the speed of the magnet is linear. Therefore, if the speed of the magnet is doubled, the induced voltage will also double.
This demonstrates the direct relationship between the speed of the magnet and the induced voltage in the coil.
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When the speed of the magnet is doubled as it is plunged into the coil, the induced voltage in the coil also doubles.
This can be explained by Faraday's law of electromagnetic induction, which states that the rate of change of magnetic flux through a coil induces an electromotive force (EMF) or voltage across the coil.
The induced voltage is directly proportional to the rate of change of magnetic flux. When the magnet is moving at twice the initial speed, the rate of change of magnetic flux through the coil is also doubled, resulting in an induced voltage that is twice the original value.
Therefore, the induced voltage in the coil is directly proportional to the speed of the magnet.
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A leaky faucet drips once every 1.5 seconds into the center of a meter-wide circular sink full of water. Once the drop strikes, it starts a ripple that travels at 20 cm/s toward the sink's edge.
a) How many circular wave fronts will fit in the sink?
b) Each drop has a mass of 0.2g, and the faucet is 20cm above the water surface. If the energy of each drop is conserved in the wave it creates, how much energy does each drop deliver to the edge of the sink?
c) Power is a measure of how quickly energy is delivered. Its unit is a Watt, where W-J/s. How much power is the leaky faucet providing?
d) Find the power delivered per meter of the sink's circumference.
e) Now imagine the sink has a diameter of 5 meters. Find the new power, and the new power per meter circumference. How have these values changed?
Answers
A) The number of circular wave fronts that will fit in the sink will depend on the size of the sink. If the sink is 1 meter wide, then the circumference of the sink is approximately 3.14 meters.
What is wave?A wave is a disturbance that propagates through space or some material medium, such as air or water, with or without an accompanying transfer of energy. In physics, a wave is an oscillation accompanied by a transfer of energy that travels through a medium or space.
Each wave front travels at a speed of 20 cm/s, it will take approximately 3.14 seconds for a wave front to travel around the entire sink once. Therefore, the number of wave fronts that will fit in the sink will be 1.5/3.14, or 0.48 wave fronts.
b) To calculate the energy delivered to the edge of the sink, we must first calculate the kinetic energy of the drop. The kinetic energy of the drop is equal to \(0.5 \times mass \times velocity^2\), or \(0.5 \times mass \times velocity^2\) = 2J Since the energy of each drop is conserved in the wave it creates, each drop will deliver 2 J of energy to the edge of the sink.
c) The power provided by the leaky faucet is equal to the total energy of the drop divided by the time it takes for the drop to reach the edge of the sink:\(2 J/1.5 s = 1.33 W.\)
d) The power delivered per meter of the sink's circumference is equal to the total power provided by the faucet divided by the circumference of the sink: \(1.33 W/3.14 m = 0.424 W/m.\)
e) The power of the leaky faucet with a 5 meter diameter sink is 6.7 W, and the power per meter circumference is 1.34 W/m. The power has increased by a factor of 5, and the power per meter circumference has increased by a factor of 3.2.
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I need help in this please
Answers
The net force acting on the charge Q is in the direction D. The net force is the sum of forces from the two point charges Q+ each.
What is Coulomb's law ?According to Coulomb's law of force, the electrostatic force between two charges separated by a distance of r is given as follows:
Fq = k q1 q2 /r²
where, k is a constant.
As per this equation, the electrostatic force between two charges will increase as the magnitude of charge increases and the force decreases as the distance between them increases.
Here, the forces acting on the point charge Q- are the forces from the two Q+ charges. They are of different distances from the charges. The force in the direction E will be greater here. The net force on -Q is acting in the direction D.
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Two speakers, A and B, are at the same point on an x-axis and each emits sound with a wavelength of 0. 25 m. Speaker B's phase constant is 260 degrees larger than speaker A's phase constant and each produces an amplitude of 10 Pa. What amplitude occurs along the x-axis in front of these speakers (Pa)?Answer is ~12-13 b. What is the minimum distance you can move speaker A to achieve constructive interference along the x-axis? Give a positive answer regardless of direction
Answers
The minimum distance we can move speaker A to achieve constructive interference along the x-axis is 0.125 m.
The amplitude that occurs along the x-axis in front of these speakers is found using the equation:
\(A = sqrt(A1^2 + A2^2 + 2A1A2cos(delta))\)
where \(A^{1}\) and \(A^{2}\) are the amplitudes of the two speakers, and delta is the phase difference between them. In this case,\(A^{1} = A^{2} = 10\) Pa, and delta = 260 degrees.
Plugging in the values, we get:
\(A = sqrt(10^2 + 10^2 + 2(10)(10)cos(260))\)
\(A = sqrt(100 + 100 + 200cos(260))\)
\(A = sqrt(200 + 200(-0.5))\)
\(A = sqrt(100)\)
\(A = 10sqrt(2)\)
\(A = 14.14 Pa\)
Therefore, the amplitude that occurs along the x-axis in front of these speakers is approximately 14.14 Pa.
To achieve constructive interference along the x-axis, we need to move speaker A so that the phase difference between the two speakers is an integer multiple of the wavelength. The minimum distance we can move speaker A to achieve this is:
\(d = lambda/2 = 0.25 m/2 = 0.125 m\)
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10. With a class 1 lever, does mechanical advantage increase or decrease as the fulcrum is moved closer to the load? Explain why.
Answers
Answer:
Class 1 Levers: Moving the fulcrum closer to the load will increase the mechanical advantage. Moving the effort farther from the fulcrum will increase the mechanical advantage.
Explanation:
Hope it helps you
PLEASE HELPPP
Force: Adding vectors (find resultant force)
50N north plus 50N west Plus 50N north west
Answers
One way to do this is to draw a diagram of the vectors and use the head-to-tail method to find the resultant vector. We can start by drawing the vector 50N north, then draw the vector 50N west starting from the end of the first vector, and finally draw the vector 50N northwest starting from the end of the second vector and ending at the tip of the resultant vector. The resultant vector is the vector that starts at the beginning of the first vector and ends at the tip of the last vector.
Alternatively, we can use trigonometry to find the magnitude and direction of the resultant vector. We can break down each vector into its x and y components, then add up the x components and the y components separately to get the x and y components of the resultant vector. The magnitude of the resultant vector is then given by the square root of the sum of the squares of the x and y components, and the direction is given by the arctangent of the y component divided by the x component.
Using either method, we can find that the magnitude of the resultant force is approximately 70.7N, and the direction is approximately 45 degrees north of west
if a beam of 11 kev x rays illuminates a sample, what angles will give diffraction maxima of the first, second and third order?
Answers
When a beam of 11 keV X-rays illuminates a sample, the angles that will produce diffraction maxima of the first, second, and third order can be calculated using Bragg's law, which states that nλ = 2d sin(θ), where n is the order of diffraction, λ is the wavelength of the X-rays, d is the spacing between crystal lattice planes, and θ is the angle of incidence.
Bragg's law can be used to calculate the angles for diffraction maxima. For the first-order maximum (n = 1), we have λ = 2d sin(θ₁). Rearranging the equation, we get sin(θ₁) = λ / (2d). Substituting the values, with λ representing the wavelength of 11 keV X-rays (which can be converted to the corresponding wavelength), and the known spacing between lattice planes, we can solve for θ₁.
For the second-order maximum (n = 2), the equation becomes λ = 2d sin(θ₂). Solving for sin(θ₂) and substituting the values, we can find θ₂.
Similarly, for the third-order maximum (n = 3), we use λ = 2d sin(θ₃) to determine sin(θ₃) and find θ₃ by substituting the values.
By calculating these angles using Bragg's law, we can determine the angles that will produce diffraction maxima of the first, second, and third order for the given beam of 11 keV X-rays illuminating the sample.
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The A has a mean lifetime of 26 10-10s and decays into p + e- + ve with a branching fraction of 83 10-4. The A+ (udc) has a mean lifetime of 2-1 10-13s. Estimate the branching fraction of the A into A+e+ +ve, comment on how your result compares with the measured value. [m()=2285GeV/c2BR(e+ve)=(2106)%]
Answers
The mean lifetime of A is given by τ(A) = 26 × 10⁻¹⁰ s. The A decays into p + e⁻ + ve with a branching fraction of BR(A → p + e⁻ + ve) = 83 × 10⁻⁴.The mean lifetime of A⁺ (udc) is given by τ(A⁺) = 2-1 × 10⁻¹³ s.
The branching fraction of A into A⁺ + e⁺ + ve is given as follows: First, we can calculate the decay constant for A.λ = (1/τ) = (1/26 × 10⁻¹⁰) s⁻¹.The half-life of A is given by t₁/₂ = ln(2) / λ = (ln2 × τ) = 2.667 × 10⁻¹⁰ s. The branching fraction of A → A⁺ + e⁺ + ve is given as follows: BR(A → A⁺ + e⁺ + ve) = 1 - BR(A → p + e⁻ + ve) = 1 - (83 × 10⁻⁴) = 0.99917.
The measured value of the branching fraction of A → A⁺ + e⁺ + ve is BR(e+ve) = 2106 %.This is greater than 100%. Therefore, the value must be a typographical error. The correct percentage is probably 21.06%.The estimated branching fraction of A → A⁺ + e⁺ + ve is 99.917%, which is very close to 100%. This implies that the A mainly decays into A⁺ + e⁺ + ve.
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A 65kg bicyclist is coasting to the right while experiencing a 50N drag. Neglect any friction impeding the motion. What is the magnitude of the net force on the bicyclist? What is the magnitude of her acceleration?
Answers
The net force acting on the bicyclist along with its own weight is 687 N. The magnitude of acceleration for this force is 10.56 m/s².
What is force?Force is a physical quantity characterised by its magnitude and direction. Force deform an object or changes its state of rest or motion. Force of a moving body is the product its mass and acceleration.
The normal force acting on an object by ts weight = mg
thus normal force on 65 kg bicyclist = 65 Kg × 9.8 m/s² = 637 N.
The dragging force acting on him = 50 N.
The resultant force = 637 N + 50 N = 687 N
Force = m a
acceleration = force/ mass
= 687 N/ 65 Kg
= 10.56 m/s².
Therefore, the net force on the bicyclist is 687 N with an acceleration of 10.56 m/s².
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simple machines are in a mousetrap
Answers
Answer:
A mousetrap makes use of a simple machine called a lever.
Explanation:
In a second-class lever the effort force is at the other end, with the load in the middle. In a third-class lever, the load is at the end and the effort force is between the fulcrum and the load. When you set the mousetrap, you are using a second-class lever. Sorry if I get this wrong. I am in 5th grade! ♥
Look at the diagram below that shows information about the sun, Earth, and moon. Use that information to calculate and compare the gravitational forces between the Earth and the Sun, and the Earth and the Moon.
Answers
i. The gravitational force between the earth and sun can be obtained as follow:
Mass of earth (M₁) = 5.987×10²⁴ KgMass of sun (M₂) = 1.989×10³⁰ KgDistance apart (r) = 1.5×10¹¹ mGravitational constant (G) = 6.67×10¯¹¹ Nm²/Kg²Gravitational force (F) =?F = GM₁M₂ / r²
F = (6.67×10¯¹¹ × 5.987×10²⁴ × 1.989×10³⁰) / (1.5×10¹¹)²
F = 3.53×10²² N
Thus, the gravitational force between the earth and sun is 3.53×10²² N
ii. The gravitational force between the earth and moon can be obtained as follow:
Mass of earth (M₁) = 5.987×10²⁴ KgMass of moon (M₂) = 7.347×10²² KgDistance apart (r) = 3.844×10⁸ mGravitational constant (G) = 6.67×10¯¹¹ Nm²/Kg²Gravitational force (F) =?F = GM₁M₂ / r²
F = (6.67×10¯¹¹ × 5.987×10²⁴ × 7.347×10²²) / (3.844×10⁸)²
F = 1.99×10²⁰ N
Thus, the gravitational force between the earth and moon is 1.99×10²⁰ N
How do i compare the gravitational forces?Gravitational force between the earth and sun (G₁) = 3.53×10²² NGravitational force between the earth and moon (G₂) = 1.99×10²⁰ NComparison =?Comparison = G₁ / G₂
G₁ / G₂ = 3.53×10²² / 1.99×10²⁰
G₁ / G₂ = 177
Cross multiply
G₁ = G₂ × 177
Thus, we can say that the gravitational force between the earth and sun is 177 times bigger than the gravitational force between the earth and moon
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True or False
1)All forces cause a change in an object’s speed and direction.
Answers
Answer:
True
Explanation:
Answer and Explanation:
True I believe bc if you put a certain amount of force on an object it'll move and depending on where you place the force on the object it'll move in that direction. How much force and how much weight the object has will determine the speed...
two paths lead to the top ofa big hill, one is steep anddirect, while the other is twice as long but less steep. how much more potential energy would you gain if you take the longer path
Answers
you will gain the same amount of potential energy regardless of the path you take
The potential energy gained depends on the height difference between the bottom and the top of the hill. Both paths will give you the same final potential energy, but the longer path will take more time and require more energy input to climb. Therefore, you will gain the same amount of potential energy regardless of the path you take. However, the longer path may require more physical effort and time to climb, even though it is less steep.
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HELP IM TIMED. ILL MARK BRAINLIEST PLSSSSSS.
A model rocket accelerates at 15.3 m/s2 with a force of 44 N.
Calculate the mass of the rocket. Round your answer to the nearest tenth of a kg.
The mass of the rocket is kg.
Fill in the blank above. Also what is the formula to find the mass. Include that in the answer pls.
Answers
Answer:
According to Newton's Second Law of Motion :
Where,
F = Force Applied
m = Mass of the object
a = Acceleration
Now, we will use this law to solve this question.
Given :
Acceleration or a = 15.3 m/s²
Force = 44 N
Mass = ?
Substitute, the given values in the formula.
F = ma
⇒ m = F/a
m = 44/15.3
m = 2.9 kg
Answer:
7.0 n
Explanation:
a plane travels 360 km in 3 hours. what is its velocity
Answers
The velocity of the plane is 120 km/hr.
How would you define velocity?Velocity is the pace at which an object's location is changing as perceived from a particular point of view and as measured by a certain unit of time (for example, 60 km/h northbound). Velocity is the direction at which an object is traveling. Velocity is a fundamental concept in kinematics, the branch of classical mechanics that deals with the motion of bodies. In order to be defined, the physical vector quantity known as velocity needs to have both a magnitude and a direction. Speed is a coherent derived unit whose quantity is measured in metres per second (m/s or m/s1) in the SI. Speed is the scalar absolute value (magnitude) of velocity (metric system). As opposed to "5 meters per second east," which is a vector, "5 meters per second," for instance, is a scalar.
Distance traveled = 360 km
Time taken = 3 hours
Hence, velocity = 360/3 = 120 kmph
Thus, the velocity of the plane is 120 km/hr.
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Can force be two-dimensional?
Answers
Answer:
Yes
Explanation:
Just as motion in two dimensions introduced vectors, forces in two dimensions also involve more involved issues.
What is the velocity of a car that travelled a total of 75 km north in 1.5 hrs?
Answers
Since d=75km=75000m
t=1.5h=3600*1.5= 5400s
=>V=75000*5400
=405000000m/s=4.05*10^8m/s
How is power defined? question 3 options:
a. the direction of the work b. the total distance c. an object is moved
d. the rate at which work is accomplished
Answers
Answer:
d. the rate at which work is accomplished.
Explanation:
The SI unit for Power is Joules
The driver of a 1.5 x 103 kg car is traveling east at 10 m/s and increases its speed to 30 m/s east over 15 seconds. What was the change in momentum of the car? Kgm/s
Answers
Answer:
30,000kgm/s
Explanation:
Change in momentum is expressed as;
Change in momentum = mass × change in velocity
∆M = m∆v
Mass m = 1.5×10³kg = 1500kg
∆v = 30-10 =20m/s
Substitute into the formula
Change in momentum = 1500(20)
Change in momentum = 30,000kgm/s
You are driving on a highway and your gas pedal gets jammed. You cannot reduce engine power. You should keep your eyes on the road and
Answers
You should keep your eyes on the road and shift into neutral when gas pedal gets jammed.
What is Neutral?In automobiles, shifting into neutral won't transmit power to the wheels and the direction of the steering wheel can still be controlled.
This helps to prevent accidents on the road as a result of such malfunctions in the car.
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difference between kinetic energy and potential energy(please i need answer in 2minutes
Answers
Answer:
Energy stored in an object due to its position is Potential Energy. Energy that a moving object has due to its motion is Kinetic Energy.
Explanation:
Welcome.
A paper airplane is thrown with an initial velocity of 2.4 m/s and an angle of 60°. Find the voy
Answers
Initial velocity of 2.4 m/s and an angle of 60°.
The x component is 2.4 m/s cos(60°) = 2.4 m/s (0.5) = 1.2 m/s
The y component is 2.4 m/s sin(60°) = 2.4 m/s (0.866) = 2.08 m/s
What is Initial velocity?Initial velocity is the speed an object has when it starts moving in a certain direction. It is the speed that an object has before any external forces act upon it. Initial velocity is a vector quantity, meaning it has both a magnitude, or size, and a direction. Initial velocity is usually measured in meters per second (m/s). It is important to note that the initial velocity of an object can be different depending on the reference frame from which it is measured.
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The complete question is-
A paper airplane is thrown with an initial vclocity of 2,4 m and angle of 60" Find the Voz: 012m/s 0.62 mn/& 0 1.70 m/8 208 m/$
You walk east for 30 m, then decide to walk north foranother 30 m. What is the angle of direction of your displacement?
Answers
Answer:
Displacement is 42.426 m NE and the angle is opposite/adjacent or 30/30 which would equal 1 degree which doesn't seem right but hopefully its an answer.
Explanation:
A point load of 1.29 nC is fixed in glycerin (Er=43). The intensities of its electrostatic field at two points are equal to 168.75 N / C and 300 N / C, respectively. determine the Mechanical Work performed by the field forces when moving the load of 2 microcolomb from the first point to the second.
Answer= -4.5 microJ
I need solving
Answers
Answer:
1 4.5 divede by 1.29 I think that is the literal answer
Find two vectors v in 2 dimensions so that || v || = 30 and the i component of v is 18 i .
Answers
We have two possible vectors: v = (18, 24), v = (18, -24) Both of these vectors have a magnitude of 30 and an i component of 18i.
To find two vectors in 2 dimensions that satisfy the given conditions, we can set up a system of equations.
Let's assume the vector v is represented as v = (v₁, v₂), where v₁ is the i component and v₂ is the j component.
Given that the i component of v is 18i, we have v₁ = 18.
The magnitude of a vector can be calculated using the formula:
||v|| = √(v₁² + v₂²)
Substituting the given magnitude ||v|| = 30 into the equation, we have:
30 = √(18² + v₂²)
Squaring both sides of the equation, we get:
900 = 18² + v₂²
Simplifying further:
900 = 324 + v₂²
Subtracting 324 from both sides:
v₂² = 900 - 324
v₂² = 576
Taking the square root of both sides:
v₂ = ± √576
v₂ = ± 24
Therefore, we have two possible vectors:
v = (18, 24)
v = (18, -24)
Both of these vectors have a magnitude of 30 and an i component of 18i.
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ANSWER ASAP Which factor determines the amount of gas that can dissolve in ocean water? (A) the motion of the air above the ocean water (B) the temperature of the air above the ocean water (C) the motion of the ocean water currents D the temperature of the ocean water
Answers
Answer:
The amount of each gas that can dissolve in the ocean depends on the solubility and saturation of the gas in water. Solubility refers to the amount of a dissolved gas that the water can hold under a particular set of conditions, which are usually defined as 0o C and 1 atmosphere of pressure.
Explanation:
hope this helps
Answer: the motion of the air above the ocean water
Explanation:
1. A kangaroo hops 84 m to the east in 7 seconds.
o What is the kangaroo's speed? 12 m/s
o What is the kangaroo's velocity?
Answers
Explanation:
Given parameters:
Distance hopped = 84m
Displacement = 84m due east
Time = 7s
Unknown:
Speed of kangaroo = ?
Velocity of kangaroo = ?
Solution:
To solve this problem,
Speed = \(\frac{distance}{time }\) = \(\frac{84}{7}\) = 12m/s
Velocity = \(\frac{displacement}{time}\) = \(\frac{84}{7}\) = 12m/s due east
the stanford linear accelerator (slac) accelerates electrons to
Answers
The Stanford Linear Accelerator (SLAC) accelerates electrons to a maximum energy of 50 GeV. It is a 2 mile long linear accelerator located in Menlo Park, California. SLAC is used for a variety of experiments, including studies of elementary particles, astrophysics, and materials science.
Here are some of the things that SLAC is used for:
Elementary particle physics: SLAC is used to study the fundamental particles that make up matter. By accelerating electrons to high energies and colliding them with other particles, physicists can study the properties of these particles and how they interact. Astrophysics: SLAC is used to study the universe beyond our solar system. By studying the properties of cosmic rays, which are high-energy particles that come from space, physicists can learn about the processes that occur in stars and galaxies. Materials science: SLAC is used to study the properties of materials. By accelerating electrons to high energies and shining them on materials, physicists can study how the electrons interact with the material and how this interaction affects the properties of the material.To learn more about matter visit: https://brainly.com/question/3998772
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Object A travels at a constant velocity of 2.0 m/s right, and object B travels in the same direction at a
constant velocity of 3.0 m/s. If object B starts 1.0 min after object A from the same position, how
many seconds will it take object B to catch object A?
Answers
==> Object A travels for 60 seconds before Object B starts out.
==> Object A moves at 2 m/s.
==> So Object A has a lead of 120 m when Object B starts out.
==> Object B moves at 3 m/s . . . 1 m/s faster than Object A.
==> So Object B catches up on Object A by 1 m every second.
==> Object B closes up Object A's lead of 120 m in 120 seconds.