When balancing a chemical equation, can a coefficient within a chemical equation be adjusted to
balance the chemical equation?
Answers
Even though chemical compounds are broken up and new compounds are formed during a chemical reaction, atoms in the reactants do not disappear, nor do new atoms appear to form the products. In chemical reactions, atoms are never created or destroyed. The same atoms that were present in the reactants are present in the products—they are merely reorganized into different arrangements. In a complete chemical equation, the two sides of the equation must be present on the reactant and the product sides of the equation.
Coefficients and Subscripts
There are two types of numbers that appear in chemical equations. There are subscripts, which are part of the chemical formulas of the reactants and products; and there are coefficients that are placed in front of the formulas to indicate how many molecules of that substance is used or produced.
The subscripts are part of the formulas and once the formulas for the reactants and products are determined, the subscripts may not be changed. The coefficients indicate the number of each substance involved in the reaction and may be changed in order to balance the equation. The equation above indicates that one mole of solid copper is reacting with two moles of aqueous silver nitrate to produce one mole of aqueous copper (II) nitrate and two atoms of solid silver.
Hope this help you.
Related Questions
What is Newtons first law
Answers
Answer:
An object in motion stays in motion unless acted upon an outside force and an object at rest stays at rest unless acted upon by an outside force.
Explanation:
Use the observations made in the virtual lab to complete this table. (pg. 5)
Month in
General observations of surface temperature anomaly maps
2008
Land
Sea
Hide side
Answers
Answer: Use the observations made in the virtual lab to complete this table. (pg. 5)
Month in
General observations of surface temperature anomaly maps
2008
Land
Sea
Hide side
Explanation: Use the observations made in the virtual lab to complete this table. (pg. 5)
Month in
General observations of surface temperature anomaly maps
2008
Land
Sea
Hide side
The acceleration of an object in uniform circular motion always points toward the center of the circle. Question 2 options: True False
Answers
Answer:
The answer is true. Hope this helps!
Which of the technologies could mostly like be found in a wearhouse
Answers
T/F: in many series circuits, a single value may represent the value for other components in a circuit.
Answers
True. In a series circuit, the same current flows through each component, so the components have the same current value.
In a series circuit, components are connected one after another such that the same current flows through each of them. This means that the current through each component is the same, and the voltage across each component is proportional to its resistance or impedance.
For example, consider a simple series circuit consisting of three resistors connected end-to-end with a battery. The current flowing through each resistor is the same, and the voltage across each resistor is proportional to its resistance. Therefore, if the resistance values of two of the resistors are known, it is possible to calculate the resistance value of the third resistor using Ohm's law:
V = IR
where V is the voltage across the resistor, I is the current flowing through the resistor, and R is the resistance of the resistor.
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3. what type of drill rig would be best suited for soft, saturated soils A. Portable B.Auger C. Clay
Answers
The correct answer is option is B. Auger. Because an auger drill rig is specifically designed for drilling in soft soils. It uses a large rotating drill bit with a helical screw-like design to remove soil from the hole it is drilling.
Also, It is a popular choice for environmental and geotechnical drilling projects, as it can drill quickly and efficiently through soft, saturated soils.. Auger drills are available in a variety of sizes and configurations, and can be used with different drilling techniques, including direct push, rotary, and sonic drilling. Hence, the correct answer is option : B.
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How much heat is required to warm 230 g of water from 12°C to 90°C?
(Specific Heat of Water = 4.184)
Answers
Can someone help me with this question pls. Thanks. Will mark brainliest.
Answers
Answer:
It is (A) Calculate the force needed to stop the vehicle.
Explanation:
Which of the following refers to the motion of an object falling straight down
with only the force of gravity acting on it?
OA. Free fall
OB. Air resistance
OC. Gravity
OD. Projectile motion
Answers
Answer:
D
Explanation:
projectile motion
is the answer
Please help. I need to know why B is the correct answer. I will mark you as brainiest and I can help you with something you need help with, I just really need help on this
Answers
B The glider moves to the right because the magnitude of the change in momentum of the rubber ball is greater than the magnitude of the changes in momentum of the clay ball.
How does the force occur?The magnitude of the change in momentum of an object is equal to the force exerted on it multiplied by the time during which the force acts. Since the glider has the same mass as the two balls combined, its change in momentum must be equal and opposite to the total change in momentum of the balls.
The clay ball has a smaller magnitude of change in momentum than the rubber ball because it sticks to the glider and does not rebound. Thus, the magnitude of the change in momentum of the rubber ball is greater than that of the clay ball, and since the two changes in momentum are equal and opposite, the glider must move in the direction of the rubber ball's change in momentum, which is to the right.
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Image transcribed:
A day hall and a rubber ball of identical mass are moving toward a gider that is at rest in a frictionless air track The balls have the same speed, with the rubber ball moving toward the left as shown above. The balls strike the glider at the same time. The day ball sticks to the glider and the rubber ball bounces off it.
Which of the following indicates the direction of motion of the glider after the collisions and explains why it moves in that direction?
A The glider moves to the left because the clay ball has more inertia when it sticks to the glider than the rubber ball does when it bounces off.
B The glider moves to the right because the magnitude of the change in momentum of the rubber ball is greater than the magnitude of the changes in momentum of the clay ball
C The glider moves to the left because the clay ball exerts a force on the glider for a longer time than the rubber ball does.
D The glider moves to the right because the collision with the rubber ball is elastic and conserves energy
if a neutral conducting spherical shell with radius r is placed in a uniform electric field e, the charge on the shell will redistribute itself and create a sort of dipole. (a) show that the external field due to the redistributed charge on the shell is in fact exactly equal to the field due to an idealized dipole at the center of the shell. what is the strength p of the dipole?
Answers
To determine the strength of the dipole created by the redistributed charge on the conducting spherical shell, we can consider the concept of electric dipole moment.
The electric dipole moment (p) is defined as the product of the magnitude of either charge (q) in the dipole and the separation distance (d) between them:
p = q * d
In this case, the dipole moment arises from the redistribution of charge on the conducting spherical shell. The magnitude of the charge on the shell will depend on the electric field (E) it experiences.
Now, let's analyze the scenario step by step:
1. The electric field (E) is uniform and acts on the conducting spherical shell of radius (r).
2. Due to the presence of the electric field, charges on the shell will redistribute themselves until equilibrium is reached.
3. The redistribution of charges will result in a dipole-like configuration, where positive charge accumulates on one side and negative charge on the other side.
4. To calculate the strength of the dipole moment (p), we need to determine the magnitude of the charge (q) and the separation distance (d) between them.
5. In the case of a conducting shell, the electric field inside the shell is zero, and the charges redistribute themselves to the outer surface of the shell. This means that the separation distance (d) between the positive and negative charges is equal to the diameter of the shell (2r).
6. The magnitude of the charge (q) on each side of the dipole can be determined by considering the net charge on the shell, which is zero. Therefore, the charges on each side of the dipole are equal in magnitude.
Now, we can express the dipole moment (p) as:
p = q * d = q * 2r
To find the value of q, we need to consider the electric field (E) acting on the shell. The electric field due to an idealized dipole at the center of the shell is given by:
E = (kp * cosθ) / r^2
where kp is the electric dipole moment of the idealized dipole and θ is the angle between the direction of the electric field and the axis of the dipole.
Since the electric field (E) acting on the shell is the same as the field due to the idealized dipole, we can equate these two expressions:
E = (kp * cosθ) / r^2 = (kq * 2r * cosθ) / r^2
From this equation, we can deduce that kp = 2krq.
Therefore, the strength of the dipole moment (p) is given by:
p = q * 2r = (kp * r) / (2k)
Substituting kp = 2krq, we get:
p = (2krq * r) / (2k) = rq
Hence, the strength of the dipole moment is given by p = rq, where r is the radius of the conducting spherical shell and q is the magnitude of the charge on each side of the dipole.
Note: The negative sign indicating the direction of the dipole is not considered here since we are only interested in the magnitude of the dipole moment.
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8) Find the X and Y component of 10degree vector that has 5N.
Answers
Answer:
Fx = 4.92 [N]
Fy = 0.868 [N]
Explanation:
Let's take the 10 degrees as a measure from the horizontal component to the vector.
Thus taking the components in the X & y axes respectively:
Fx = 5*cos(10) = 4.92 [N]
Fy = 5*sin(10) = 0.868 [N]
1. Reflection Question: What are some actions or activities that can affect your heart rate and respiratory rate and cause either or both of them to increase or decrease?
Answers
Answer:
There are following two activities which affect heart rate and respiratory rate.
1-Exercise
2-Hiking
Explanation:
when we are exercising or hiking our heart rate and respiratory rate affected. This is because during hiking and exercising our body may need three or four time your normal cardiac output. This is because our body consuming energy during the workout and our muscles needs more oxygen. To meet the need of energy and oxygen respiration rate become fast and heart rate also increase.
PLs HELP
The gravity in space is the same as the gravity on Earth
True
False
Answers
Answer:
false
Explanation:
The gravity in space is not the same as the gravity on Earth
Figure ABCDE is the result of a 180º rotation of figure LMNOP about point F.
Which angle in the pre-image corresponds to ∠D in the image?
Enter your answer in the box.
∠
Figure L M N O P is rotated 180 degrees about a point resulting in image A B C D E.
Answers
The angle in the pre-image that corresponds to ∠D in the image is ∠P.
What is correspond?Correspond is a verb that means to communicate with another person or group in writing. It can also mean to match or correspond in kind or degree. Correspondence is the exchange of written communication between two people or groups. For example, a company might correspond with its customers through email, letters, or other forms of communication. Correspondence can also refer to the relationship between two or more things that are similar or have a connection. In this context, it means that two or more things correspond to each other in some way.
This is because when a figure is rotated 180 degrees about a point, the angle in the pre-image will be the same as the angle in the image, but in the opposite direction. Therefore, in this case, the angle in the pre-image that corresponds to ∠D in the image is ∠P.
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Two identical spring-loaded dart guns are simultaneously fired straight downward. One fires a regular dart; the other a weighted dart. Which dart hits the ground first
Answers
Both the regular dart and the weighted dart fired from the identical spring-loaded dart guns straight downward will hit the ground at the same time.
This is because the acceleration due to gravity is constant, and both darts are subjected to the same gravitational force, regardless of their weight. Both darts would hit the ground at the same time. This is because the force of gravity acts on both objects equally, regardless of their weight or shape. As long as both guns are fired straight downward and with the same force, they will both experience the same acceleration due to gravity and reach the ground at the same time.
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What is the wavelength of an electron accelerated through a 26. 1-kv potential? The mass of the electron is 9. 11 x 10^-31 kg
Answers
The wavelength of an electron accelerated through a 26.1-kV potential can be calculated using the de Broglie wavelength equation. With the given potential and the mass of the electron, we can determine the wavelength of the accelerated electron.
The de Broglie wavelength equation relates the wavelength (λ) of a particle to its momentum (p): λ = h / p, where h is Planck's constant. To calculate the momentum of the electron, we need to determine its velocity.
Using the equation for the kinetic energy of an electron, K.E. = (1/2)mv^2, and the given potential (26.1 kV), we can find the velocity (v) of the electron by equating the kinetic energy to the potential energy: (1/2)mv^2 = qV, where q is the charge of the electron and V is the potential difference.
By rearranging the equation and substituting the values of the electron's charge and the given potential, we can solve for the velocity of the electron. Once we have the velocity, we can calculate the momentum (p) using the equation p = mv.
Finally, substituting the value of the momentum into the de Broglie wavelength equation, along with Planck's constant, we can determine the wavelength of the accelerated electron.
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What is one situation when experiencing static electricity?
Answers
Answer:
getting shocked
Explanation:
i didnt really get the answer really much but i hope this helps
Answer:
Hair standing up
Explanation:
When there is a lot of static electricity, your hair stands up.
NEED HELP WITHIN THE NEXT 10 MIN! WILL MARK BRAINLIEST
For Part 3, describe the motion of the ball as it moves from the top of the ramp and comes to rest against the block. Explain how the motion changes in terms of the velocity, distance, acceleration, and force that you measured. Use your data and Newton’s laws to calculate these values and explain the situation. Include the tables you used to calculate average initial velocity and average displacement. Also show your work for your calculations of acceleration and net force
Answers
The motion of the ball as it moves from the top of the ramp and comes to rest against the block can be described as follows:
Velocity: The initial velocity of the ball as it is released from the top of the ramp can be calculated by using the kinematic equation v_f = v_i + at, where v_f is the final velocity, v_i is the initial velocity, a is the acceleration, and t is the time.
Distance: The distance traveled by the ball as it moves from the top of the ramp to the point where it comes to rest against the block can be calculated using the kinematic equation d = v_i*t + (1/2)at^2.
Acceleration: The acceleration of the ball can be calculated by using the formula a = (v_f - v_i) / t, where v_f is the final velocity, v_i is the initial velocity, and t is the time.
Force: The net force acting on the ball can be calculated using Newton's second law of motion, F = ma, where F is the net force, m is the mass of the ball, and a is the acceleration.
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Shawn uses 45 N of force to stop the cart 27 meter from running his foot over. How much work does he do?
Answers
Answer:
W=f×d
w=45×27
w=1215 j.............
Plants appear green because they do not absorb the green wavelengths of light. What happens to those green light waves when they hit a plant? The are diffracted. They are absorbed. They are reflected. They are refracted.
Answers
Answer:
They are reflected.
Explanation:
Red light is absorbed while green light is reflected, causing the color to be green in human eyes.
Answer:
C
Explanation:
I need help asap please please
a light ray strikes at a plane mirror at an angle of incident of 35 degree what would the angle of reflection be explain???
Answers
laws of reflection
I = r
angle of incident = angle of reflection
35 = 35
50mg/dL or 0.05g/dL is equal to how many drinks?
Answers
To answer your question, it's important to clarify that "50 mg/dL" or "0.05 g/dL" are measurements of blood alcohol concentration (BAC) and not directly equal to a specific number of drinks.
As a result, the number of drinks required to reach a BAC of 50 mg/dL (0.05 g/dL) can differ between individuals.
Generally, one standard drink contains about 14 grams of pure alcohol, which can be found in 12 ounces of beer, 5 ounces of wine, or 1.5 ounces of distilled spirits. However, the exact number of drinks it takes to reach a BAC of 50 mg/dL (0.05 g/dL) will depend on a person's specific characteristics and how quickly the drinks are consumed.It's crucial to remember that it's not safe or legal to drive with a BAC of 0.05 g/dL or higher in many countries, as it can impair cognitive and motor functions. Always drink responsibly and arrange for a safe way home if you choose to consume alcohol. BAC levels vary depending on factors such as weight, gender, and individual metabolism.
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What is the mass of a 50kg object in space with no gravity?
Answers
Answer:
The answer would be 0kg.
Your welcome.
How do I find average velocity and average time
Answers
Answer:
x2- x1 / t2 - t1
Explanation:
To find this speed, you have to use the operation of: X2 -X1/ t2 -t1, we know that x is the distance, we do the operation and that would be our average speed
Which statements best describe X-rays?
Answers
Answer:x rays are electromagnetic waves.
x rays are transverse waves
x rays travel at the speed of light
Explanation:
Increasing the distance between an electromagnet and the compass will cause the observed effect of the compass to _____.
Answers
Increasing the distance between an electromagnet and the compass will cause the observed effect of the compass to decrease in strength
What would the Increasing the distance between an electromagnet and the compass cause?
The strength of the magnetic field produced by an electromagnet decreases as the distance from the electromagnet increases. This means that if the distance between the electromagnet and the compass increases, the magnetic field that the compass is experiencing will weaken.
As a result, the observed effect of the compass will decrease in strength as the distance between the electromagnet and the compass increases.
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The magnitude, m, of an earthquake is represented by the equation m=23logee0 where e is the amount of energy released by the earthquake in joules and e0=104. 4 is the assigned minimal measure released by an earthquake. Which equation could be used to find the amount of energy released by an earthquake with a magnitude of 2. 7?.
Answers
The amount of energy released by an earthquake is \(2.8 * 10^{8}\).
What is magnitute of earthquake?
Magnitude is the most commonly used measure of an earthquake's size. It is a measurement of the magnitude of the source for a single earthquake. As a result, it is the same regardless of how or where you perceive it, and the following calculation can be defined:
\(magnitude M = \frac{2}{3} log \frac{E}{Eo}\)
where,
E = amount of energy released
Eo = \(10^{4.4}\)
As M = 2.7
\(M = \frac{2}{3} log \frac{E}{Eo} \\\\2.7 = \frac{2}{3} log \frac{E}{10^{4.4} }\\\\4.05 = log \frac{E}{10^{4.4} }\\\\10^{4.05} = \frac{E}{10^{4.4} }\\\\E = 10^{4.05} * 10^{4.4} \\\\\)
\(E = 2.8 * 10^{8}\)
The amount of energy released by an earthquake is \(2.8 * 10^{8}\).
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Name the component used in electric circuits that is sensitive to temperature
Answers
Answer :
Tungsten filament35.On a cold winter day the sections of a bridge will...Select one:a. expand.b. contract.c. remain the same.d. none of the above.
Answers
We know that substances expand with high temperatures and contract with low temperatures, therefore, the bridge will contract and the answer is b.