Answers
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
The Balanced chemical equation for the given reaction will be ~
[tex] \large \mathrm{\boxed{ \boxed{4\: Na + O_2} \rightarrow \boxed{ 2\;Na_2O}}}[/tex]
4Na + 02 —-> 2Na2O
Related Questions
During a single period, the distance traveled by a wave is:
Answers
Answer:
wavelength
Explanation:
wavelength is the distance from crest to crest or from trough to trough. The wavelength can also be thought of as the distance a wave has traveled after one complete cycle—or one period
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During a single period, the distance traveled by a wave is one wavelength. The correct option is b.
What is a wavelength?The distance between identical points (adjacent crests) in adjacent cycles of a waveform signal propagated in space or along a wire is defined as the wavelength.
This length is typically specified in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm).
The wavelength is the distance between two wave crests, and it is also the distance between two wave troughs.
The frequency is measured in cycles per second and is the number of vibrations that pass over a given spot in one second (Hertz).
The color of light is determined by its wavelength, and the pitch of sound by its wavelength.
The wavelengths of visible light range from approximately 700 nm (red) to 400 nm (violet). The wavelength of audible sound is approximately 17 mm to 17 m.
Thus, the correct option is b.
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Your question seems incomplete, the missing options are:
A) one-half wavelength.
B) one wavelength.
C) two wavelengths.
As you clear the sidewalk with a leaf blower, the blower pushes you away from the leaves. What is pushing on the blower so that it can push on you
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So we want to find what causes the blower to push on you when you use it.
We will see that this happens because of Newton's third law, and the thing that is pushing the blower is the air itself.
Well, Newton's third law says that when two objects interact, they exert equal and opposite forces on each other.
In this case, the leaf blower is interacting with the air, pushing it so it can push away the leaves. But by this law, the air also exerts a force on the leaf blower (we have the interaction leaf blower- air) so the air is what "pushes" the blower, and because you are holding it, you feel that push.
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Kinetic energy is best described as
A. the energy of motion.
В. stored energy
C. the energy of particles.
D. wave-like energy
Answers
Answer:
Kinetic energy is best described as the energy of motion.
Explanation:
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Kinetic energy is best described by the energy of motion. The correct option is option (A).
The kinetic energy is described as,
Kinetic energy = 1/2*mass*velocity²
The kinetic energy is the energy that acts when an object is in motion. It is characterized as the work necessary to move an object from a state of rest to its present velocity. From the equation, the square of the velocity and mass is directly proportional to the kinetic energy. The kinetic energy is a scalar quantity and its SI unit is joules.
Hence, the correct option is (A).
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A student is attempting to design a simple generator that is capable of generating the greatest amount of electric current. He created four prototypes each with a different number of turns of wire. Two of the prototypes used strong magnets and the other two used weak magnets. He tested each prototype by rotating the magnets inside the turns of wire and measured the current generated by each prototype. What conclusion can the student draw from the data he collected?
Answers
Answer:
uhm
Explanation:
Answer:its b
Explanation:
Why does the rotation curve of a spiral galaxy increase with increasing distance near the galaxy's center
Answers
Answer: Because the encircled mass increases so fast that gravity increases with the radius.
Explanation:
"The slumped area in this model supports grassy vegetation. What does this say about the speed of the mass movement, and why are there no trees growing in the slumped area?"
Answers
Slumped area only supports grassy vegetation and no trees can be grow on it.
A slump is a form of mass wasting that occurs when a rock layer moves at a short distance down a slope, this type of area is called slumped area. The speed of the mass movement at slumped area is slow i.e. few cm per year or meter per year.
There are no trees growing in the slumped area because trees required fixed land but the land moves at the slumped area so we can conclude that slumped area only supports grassy vegetation and no trees can be grow on it.
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Answer:
The grassy vegetation in the slumped soil indicates slow movement of material, and it appears recently enough that trees have not had time to establish themselves.
Explanation:
It likely moved gradually over a period ranging from days to years. Grassy vegetaion has been able to establish on the surface without any breaks or open soil visible, this is evidence of the gradual movement.
One hydrogen will be able to bond to how many other atoms?
Answers
Answer:
1
Explanation:
hydrogen has one electron therefor only being able to bond with one other
determine the longest wavelength of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in k is 1.76 × 103 kj/mol.
Answers
Answer:
The wavelength of light is 68 nm
Explanation:
Electric current moves from low voltage to
high voltage.
True
False
Answers
which part of the electromagnetic spectrum has a lower frequency than visible light?
Answers
Answer:
radio waves
Explanation:
radio waves have lower frequency than visible light
which part of the electromagnetic specturm has the lowest radiant energy?
Answers
How to calculate the angle of a resultant
Answers
Answer:
The direction angle θ of the resultant in the Polar (positive) specification is then θ = α + 60°. The Law of Cosines is used to calculate the magnitude (r) and the Law of Sines is used to calculate the angle (α).
Describe the motion of a ball thrown across a room using physics terms such as velocity, acceleration, and
force.
Answers
The force of gravity affects the upward motion of the ball causing a decrease in the velocity and acceleration of the ball as it moves upwards.
The motion of a ball thrown across a room is affected by force of gravity which causes the ball to fall to the floor.
The velocity of the ball decreases as the ball moves upwards and eventually becomes zero at maximum height, which starts to increase again as the ball begins fall down.
The acceleration of the ball is directed downwards during the motion.
Thus, we can conclude that the force of gravity affects the upward motion of the ball causing a decrease in the velocity and acceleration of the ball as it moves upwards.
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Andrew is riding his bike is riding in a circle that has a radius of 10 m. He keeps
his speed at a constant 6 m/s. What acceleration does Andrew experience
during his ride?
Answers
The acceleration that Andrew experience during his ride is 3.6m/s²
The formula for calculating centripetal acceleration is expressed as:
a = v²/r
v is the speed
r is the radius
Given the following expression
v = 6m/s
r = 10m
Substitute the given parameters into the formula
a = 6²/10
a = 36/10
a = 3.6m/s²
Hence the acceleration that Andrew experience during his ride is 3.6m/s²
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How many cells that are 0.5 V, 0.2 A each are required to create a 12 V battery that has a 0.5 A capability
Answers
24 cells 0.5V are required to create a 12volts battery
2.5 cells 0.2A is required to create a 12volts battery
Let the number of 0.5volts cells required to create a battery of 12Volts be x
Let the number of 0.2A cells required to create a current of 0.5A be y
To get the value of "x", we will use the expression:
[tex]0.5x = 12\\x=\frac{12}{0.5}\\x = 24[/tex]
This shows 24 cells 0.5V are required to create a 12volts battery
To get the value of "y", we will use the expression:
[tex]0.2y = 0.5\\y=\frac{0.5}{0.2}\\y = 2.5[/tex]
This shows 2.5 cells 0.2A is required to create a 12volts battery
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particle moves along the x axis. Its position is given by the equation x-2 +3t-1t,with x in meters and t in seconds. Determine its position when it changes direction?
Answers
Answer:
35on 5gcghh finds do go CNN chk
What is the valence shell
Answers
Evaporation is a process which tends to keep temperatures cooler where it occurs. This is because evaporation increases the reflection of solar energy. increases the specific heat. increases the outgoing radiation. uses energy to change the phase of water instead of warming it. reduces the absorption of solar energy.
Answers
Answer:
yes makes sense
Explanation:
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Armando has been playing tennis for a few months. He appreciates the workout and, thanks to lessons, is getting much better. His series of lessons is coming to an end, so it is a good time for him to reflect on his experience. What kinds of questions should he ask himself?
A.
Is tennis actually a good use of his time or not?
B.
Could he ever become a professional tennis player?
C.
Is he as good as other people who play at the same court?
D.
Does he really enjoy it and does he have any future goals?
PLEASE NO LINKS
Answers
Answer:
D
Explanation:
D. Does he really enjoy it and does he have any future goals?
an object is hung on a spring scale and is measured to have a force of the Earth of 7.45 N. What is the mass if the object
Answers
The mass of the object hung on the spring is 0.76 kg.
The given parameters;
weight of the object, F = 7.45 NThe mass of the object is determined by applying Newton's second law of motion as shown below;
F = mg
where;
g is acceleration due to gravity on Earth = 9.8 m/s²The mass of the object is calculated as;
[tex]m = \frac{F}{g} \\\\m = \frac{7.45}{9.8} \\\\m = 0.76 \ kg[/tex]
Thus, the mass of the object hung on the spring is 0.76 kg.
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What is the equation for power?
Answers
Answer:
P = E/t
Explanation:
14 Select the correct answer. Which particles make up the nucleus of an atom? OA protons and electrons OB. neutrons and electrons O C. protons only OD. protons and neutrons СЕ. neutrons only
Answers
Answer:
The right answer is. protons and neutrons
Investigate the ways architects and engineers increase the efficiency of climate control systems.
Answers
Answer:
sense we see what gases can do to earth we have made progress to keep it habitable buy solar panels water energy and using as lil of waste material as possible
Explanation:
A boat does 500 joules of work as travels 50 meters in 5 second how much power was produced?
A-2500 watts
B-5000 watts
C-250 watts
D-500 watts
Answers
Answer:
Explanation:
A 2,500 watts
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Rachel is a fitness instructor in a senior living community, so the population is over 55. On the whole, they are very active, and her fitness classes are quite popular. Rachel is always sure to include a lot of balance exercises into her classes. Which BEST explains why she does this?
A.
Balance exercises tend to be very high-energy.
B.
Falls are particularly dangerous for older people.
C.
There is no possibility of injury with balance exercises.
D.
Balance exercises are a standard part of any exercise class.
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Answers
Rachel is a fitness instructor in a senior living community, so the population is over 55. she is always sure to include a lot of balance exercises into her classes. Falls are particularly dangerous for older people. thus option B is correct.
What are the benefits of exercise ?physical activity or doing exercise leads to improve the strength of muscle, workout maintain the level of oxygen and vitamins for tissues and allows the proper functioning of cardiovascular device, when the heart and lung fitness enhance, energy will be enhanced.
The specificity, progression, overload, variation, and reversibility practicE are the crucial parts which are needed to improve your performance.
The training or doing exercise can help in development in fitness application are overload, progression, and specificity, increase the repetitions, a quantity of weight, or length of time in an exercise you are familiar with, you are making use of overload.
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If a system does 31.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change in the internal energy of the system, in kJ
Answers
Answer:136 kj
Explanation:
If a system does 31.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change in the internal energy of the system, in kJ
the system spent 32.0 kj in work and 105 kj in heat, so it spent a total of
31 +105 =136 kj
A light bulb is plugged into a wall outlet (220 V) and it uses 0.68 amps. What is the light bulb’s resistance?
Answers
Answer:
14.96 amps
Explanation:
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Tracking your exercise can help you stick with an exercise routine.
A.
True
B.
False
Answers
Answer:
Yes it can A
Explanation:
Answer:
The correct choice is A. True
Explanation:
Tracking your exercise can help you stick with an exercise routine because it lets you see how you are progressing in terms of reaching your previously set goals.
Is this a scientific model? Use complete sentences to explain why or why not.
A world map showing vegetation
Answers
Answer:
yes because it caries a message on ecological and evolutionary assembly of the classified vegetation and flora. Its known to be called a Vegetation map or Vegetation Mapping.
Explanation:
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Shondra has decided to become a vegetarian. She just cut meat out of her diet, so her body is still adjusting. For the past day or two she is always hungry and is having trouble focusing. What is her body MOST likely adjusting to in this situation?
A.
a decrease in fats
B.
a decrease in water
C.
a decrease in protein
D.
a decrease in carbohydrates
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Answers
Answer:
The answer is "A"
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