how many total elements are there in this chemical formula Na3
Answers
Answer:
By November 2016, the International Union of Pure and Applied Chemistry had recognized a total of 118 elements. The first 94 occur naturally on Earth, and the remaining 24 are synthetic elements produced in nuclear reactions.
Explanation:
Related Questions
The force between two objects, each of charge -Q is measured as +F when the objects are separated a distance 2d apart. If the charge on only one object is tripled, determine the new force between them:
Answers
Answer:
Fnew = k (-3Q *(-Q)) / (2d)²
Fnew = k * 3Q² /4d²
Explanation:
This is Coulomb's law
F = k (q₁*q₂)/r²
F - electric force
k - Coulomb constant
q₁, q₂ - charges
r - distance of charges
Starting situation : q₁ = -Q, q₂= -Q , r =2d
F = k (-Q*(-Q)) / (2d)²
F = k *Q² /4d²
NEW FORCE : q₁ = -3Q, q₂= -Q, r =2d
Fnew = k (-3Q *(-Q)) / (2d)²
Fnew = k * 3Q² /4d²
plssss help it will be real;ly nice of you
Answers
MA= 600N/30N
MA= 20N
Answer:
ExplainMA formula: output force/input force
MA= 600N/30N
MA= 20Nation:
How did this piece of evidence change your thinking about the channel on Mars? Explain your ideas below.
Answers
The piece of evidence changed thinking about the channel on Mars because it shows that the rock was formed next to flowing water as such rock formations exist on Earth and were formed by flowing water.
Was there flowing water on Mars ?The geologic process that could have created the channel on Mars is water moving. We can infer from the image that water running across the terrain on Mars created channels similar to those on Earth.
We can claim that the flowing of water creates the channels on Mars because when the water runs for a long period from the same region, it takes the sediments and creates channels.
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Louise has put together the setup shown in the figure to investigate how different masses respond to different forces. A mass is attached to two stretched springs. It rides on a track with very little friction. When Louise pushes the mass to either side and then lets it go, it oscillates back and forth, much like a pendulum. Explain why the mass oscillates.
Answers
Answer:due to the kinetic energy stored in spring
Explanation:
this happen because when spring ia stretched it store kinetic energy and it has the ability to move back and forward so this happen
Due to stored kinetic energy in the spring, the mass oscillated like a pendulum.
It is given that a mass is attached to two springs that are stretched. When Louise pushes the mass to either side and then lets it go, it oscillates back and forth resembling a pendulum.
This movement is observed because the mass if the block placed is shared between the two springs. This let the two springs to store the energy in them. This could also be given as potential energy.
When the mass is moved in the either side, the potential energy in the springs are turned into kinetic energy leading to movement of the mass. Since, the mass is help up with two springs, oscillatory movement or to and fro motion of the spring is observed.
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Which statement is not true?
A. When atoms are combined together they always form molecules
B. When atoms are combined together they always form compounds
C. A molecule has more than one type of the same atom
Answers
Answer:
A
Explanation:
Because when atom combine in a bond they form molecules
Hydrogen atom +Hydrogen atom =Hydrogen molecule
H+H====== H₂
Make me brainliest
Which statement best describes the relationship between prophase and telophase?
The spindle fibers bring the chromosomes together in prophase then apart in telophase.
The spindle fibers pull the chromosomes apart in prophase then bring them together in telophase.
The nuclear membrane forms in prophase and breaks down in telophase.
The nuclear membrane forms in telophase and breaks down in prophase.
Answers
Answer:The spindle fibers pull the chromosomes apart in prophase then bring them together in telophase.
Explanation: hope this helps☺️
Answer:
D got it right on edge 2021
Explanation:
Match these items.
1. imprint of plant or animal
original-remains fossil
2. undecayed plant or animal part
carbonized fossil
3. replaced by a mineral
petrified fossil
4. only carbon remains
cleavage
5. mountain
geology
6. from magma
metamorphic
7. from physical and chemical changes
igneous
8. sandstone
print fossil
9. helps identify rocks
landform
10. science of Earth
sedimentary
Answers
1. print fossil
2. carbonized fossil
3. petrified fossil
4. cleavage
5. landform
6. igneous
7. metamorphic
8. print fossil
9. geology
10. sedimentary
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The print fossil, original-remains fossil, petrified fossil, carbonized fossil, landform, igneous, metamorphic, sedimentary, cleavage, and geology are the respective matches as given in the question.
Print fossil is imprint of plant or animal and basically known as fossil impression. Original-remains fossil comprises of the original tissues and parts of organism and undecayed plant or animal part. Petrified fossil is replaced by a mineral. Carbonized fossil is only carbon remains. Landform is a mountain. Igneous is from magma.
Metamorphic is from physical and chemical changes. Sedimentary rocks are sandstone. Cleavage helps to identify rocks. Geology is the study of science of earth.
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What landscape feature contributes to the dryness of deserts?
A. The open, flat areas of a desert prevent clouds from forming.
B. Desert canyons collect all water and funnel it out of the desert.
C. Desert lakes absorb all the water.
D. Mountains block the winds that bring rain clouds.
Answers
Answer:
As I'm Not % Sure I Can Say C & D don't seem Right, Leaving A & B Having Me to Think the Answer is A (Hope I'm Right Good-Luck)
Explanation:
Answer: Mountains block the winds that bring rain clouds.
Explanation: By acting as obstacles to the flow of air masses, mountains contribute significantly to the dryness of deserts. Orographic lifting is a process that occurs when moist air is forced to ascend as it approaches a mountain range. The moisture in the air condenses and forms clouds as the air cools as it climbs. As a result, on the windward side of the mountains, the air loses a lot of its moisture as precipitation. The air has already lost a significant amount of moisture by the time it reaches the leeward side of the mountains, creating a rain shadow effect. On the leeward side of the mountains, this impact results in a dryer area that is often a desert. Consequently, the existence of mountains influences
In the modern periodic table, elements are arranged in order
based on the number of in the nuclei of their atoms.
Answers
Answer:
In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).
Explanation:
Answer:Protons
Explanation: Just got it right on the CK-12 assignment :)
what is methyl orange
Answers
Answer:
orange made up from methyl
What type of person studies and collects data on the weather?
Answers
miss girl help- You may not have ever heard of the Inupiat, Inuvialuit, or the Gwich'in peoples, but where can you infer that they live?
Answers
Answer:
The Gwichʼin or Kutchin are an Athabaskan-speaking First Nations people of Canada and an Alaska Native people. They live in the northwestern part of North
Explanation:
What is the main way viruses cause disease in the body
A. By feeding directly on your body parts
B. By using your body's cells to make new viruses
C. By absorbing nutrients from your bloodstream
D. By breaking down your body's cells for nutrients
Answers
Answer:
the answer is B
Explanation:
this is because viruses need to enter a host cell to start reproduce. they usually use your cell to create "virus making factories".
hope it helps
no problems
Can some one help? And also explain it? The question is how titan in Saturn evaporated I’m just confused by this question I just don’t know what to write as a response…. Help?!?
Answers
The process of how Titan's atmosphere evaporated is an interesting one. Titan is the largest moon of Saturn and has a thick atmosphere primarily composed of nitrogen, similar to Earth's atmosphere. The evaporation of Titan's atmosphere is related to its surface temperature, atmospheric pressure, and the composition of its atmosphere.
Here's a simplified explanation of how Titan's atmosphere can evaporate:
1. Surface Temperature: Titan is a very cold moon with surface temperatures averaging around -290 degrees Fahrenheit (-179 degrees Celsius). At such low temperatures, some of the gases in the atmosphere, like methane and ethane, exist in liquid form on the surface.
2. Atmospheric Pressure: Despite being cold, Titan's atmosphere is relatively dense, with a surface pressure about 50% higher than Earth's. This atmospheric pressure helps keep the gases in the atmosphere from escaping into space easily.
3. Evaporation: Even at such low temperatures, some of the liquid hydrocarbons on Titan's surface can evaporate and become gases in the atmosphere. This process is similar to how water evaporates from Earth's oceans and lakes, despite not reaching boiling temperatures.
4. Condensation: Conversely, when the gases in Titan's atmosphere lose energy, they can condense and return to the surface as liquid. This is similar to how water vapor in Earth's atmosphere condenses to form clouds and eventually falls as rain.
Overall, the balance between evaporation and condensation in Titan's atmosphere is influenced by its temperature, atmospheric pressure, and the composition of its atmosphere. The low temperatures and high atmospheric pressure allow for the existence of liquid hydrocarbons on the surface and their occasional evaporation into the atmosphere.
I hope this explanation helps you understand how Titan's atmosphere can evaporate despite being a cold moon. If you have any further questions or need more clarification, feel free to ask!
What is an ellipse please help)
Answers
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
GIVING BRAINLIEST FIVE STARS AND HEART!
Nuclear fusion and nuclear fission both release huge amounts of energy. How are the two processes different?
Answers
Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy.
Newton's second law of motion is F = ma.
A net force of 60 N north acts on an object with a mass of 30 kg. Use Newton's second law of motion to calculate the amount of acceleration the object will experience. Then explain how the amount of acceleration will change if the net force or the mass of the object increases?
Answers
Answer: The acceleration of the object is 2m/s^2. If net force increases, acceleration will also increase and if mass increases, the acceleration will decrease.
Explanation:
Force is defined as the product of object's mass and acceleration.
Mathematically,
F = ma ......(1)
or,
a = F/m .....(2)
where,
F = Force exerted on an object = 60N
m = mass of an object = 30kg
a = acceleration of the object = ?
Putting values in above equation, we get:
a = 60 kg.m/s^2/30 kg = 2m/s^2
The acceleration of the car is 2m/s^2.
From equation 2, it is visible that acceleration is directly proportional to force. This means that \if force increases, acceleration also increases.
And acceleration is inversely proportional to mass of the object. This means that if mass increases, the acceleration decreases.
Hence, if net force increases, acceleration will also increase and if mass increases, the acceleration will decrease.
A net force of 60 N north acts on an object with a mass of 30 kg , so according to Newton's second law of motion the acceleration of the object would be 2 m / s²,the amount of acceleration would decrease if the mass of the object increases.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
F =m × a
As given in the problem, a net force of 60 N north acts on an object with a mass of 30 kg.
60 = 30 × acceleration
acceleration = 60 / 30
= 2 m / s²
Thus, the acceleration of the object would be 2 m / s² , and the acceleration would decrease if the mass of the object increases.
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Motohiro felt chilled by the rainy afternoon. He decided to make a cup of hot tea. He let the tea leaves steep too long and the tea was bitter, Motohiro added some sugar to his tea to improve the flavor. After he stirred the sugar with the tea, he couldn’t see the sugar any longer.
Which statement best describes what happened to the sugar?
The sugar molecules disappeared.
The sugar molecules melted.
The atoms that make up the sugar were destroyed.
The sugar molecules mixed evenly with the tea
The sugar turned into a new substance.
(I don’t know the answer, my mouse is on a random one in the photo)
Thank you !
Answers
Answer: the correct one would be option B.
Explanation:
I am an element that has no luster, brittle, and is a poor conductor of electricity. What element can I be?
Answers
Answer: Oxygen
Explanation:
Oxygen is not a good conductor, it is brittle, and has no luster.
With the atomic number 1 and an atomic mass of 1.0079, hydrogen has _________.
With the atomic number 1 and an atomic mass of 1.0079, hydrogen has _________.
130Periodtblhydr
A.
2 energy levels
B.
1 neutron
C.
1 proton
D.
2 electrons
A.
2 energy levels
B.
1 neutron
C.
1 proton
D.
2 electrons
With the atomic number 1 and an atomic mass of 1.0079, hydrogen has _________.
130Periodtblhydr
A.
2 energy levels
B.
1 neutron
C.
1 proton
D.
2 electrons
Answers
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, the correct option is option C.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
Hydrogen is a element whose property match with alkaline metals and halogens as well on the basis of valence electron 1. Hydrogen has no neutron in its nucleus, only 1 electron and 1 proton is present in the nucleus of the hydrogen. With the atomic number 1 and an atomic mass of 1.0079, hydrogen has 1 proton.
Therefore, the correct option is option C that is With the atomic number 1 and an atomic mass of 1.0079, hydrogen has 1 proton.
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The mass of Betelgeuse is about ___ times the mass of Vega
(This is not multiple choice.)
Answers
Therefore, the mass of Betelgeuse is about 17.634 kg/ 9.5 times the mass of Vega.
Vega is a main-sequence star located in the constellation Lyra. Betelgeuse is a red supergiant star located in the constellation Orion. The mass of Betelgeuse is observed to be about 20 times the mass of the Sun, while the mass of Vega is estimated to be about 2.1 times the mass of the Sun. Therefore, the mass of Betelgeuse is theoretically estimated to be around 9.5 times the mass of Vega.
Experimentally,
The mass of Betelgeuse is 2.188 x10^31 kg
The mass of Vega is 4.246 x 10^30 kg
Hence, the mass of Betelgeuse is about 17.634 kg/ 9.5 times the mass of Vega.
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Explain what natural selection and adaptation are
Answers
Answer:
It's evoultion or the cause of it. Adaptations are how well animals or plant thrive in a new enviorment.
Explanation:
Natural selection is a mechanism and(or)cause of evolution. Adaptations are physical or behavioral traits that makes it easier for an organism to to sustain themselves or thrive in new enviornments. Heritable variation comes from random mutations.
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What happens at the borders of major tectonic plates?
Radioactivity is very high and large amounts of uranium are found.
Earthquake and volcanic activity is evident.
The edges of plates break apart due to the crushing that occurs.
The borders are calm and free of plate movement activity.
Answers
Answer: continental crust is created and oceanic crust is destroyed.
Explanation:
Answer:
Radioactivity.
List the five physical phase changes of matter and give one example for each.
Answers
Answer:Melting.
Freezing.
Evaporation.
Condensation.
Sublimation.
Explanation:
Answer: Examples for the five transformations previously given.
For the first four, we encounter common examples in everyday life, all to do with water:
Freezing - liquid to solid, e.g. water to ice, e.g. making ice cubes.
Melting - solid to liquid, e.g. ice to liquid water, melting ice cubes or snow flakes.
Condensation - gas to liquid, e.g. water vapor (gas) to liquid - water vapor in air (humidity) condenses to form liquid droplets on the outside of a cold beverage glass on a hot humid day; or cloud formation in the atmosphere.
Evaporation - liquid to gas, e.g. liquid water on clothes evaporates as clothes dry on clothesline or in dryer
While water can sublime under certain conditions of temperature and pressure, it is less evident in everyday life. Carbon dioxide however is a more common example.
Sublimation - solid to gas, e.g. "dry ice" disappearing. The visible smoke associated with dry ice is most likely just condensing water vapor in the air as the solid carbon dioxide cools the air.
Explanation:
How does natural selection change the traits of living things over long periods of time? *
A. Organisms with favorable variations of traits will live longer
B. Organisms with favorable variations of traits are more likely to survive and reproduce
C. Organisms are always changing traits
Answers
The process plants use to make food is called:
osmosis
osmosis
respiration
respiration
carbon cycle
carbon cycle
photosynthesis
Answers
Answer:
PHOTOSYNTHESIS IS THE ANSWER
how to use a microscope> Everything I need to know
Answers
Always keep your microscope covered when not in use.
Always carry a microscope with both hands. Grasp the arm with one hand and place the other hand under the base for support.
Step 1: Set Up the Microscope. ...
Step 2: Clean the Lens. ...
Step 3: Prepare a Slide. ...
Step 4: Insert the Slide. ...
Step 5: Set Up for Viewing. ...
Step 6: Set the Light Control. ...
Step 7: Focus the Microscope. ...
Step 8: Increase Magnification.
Answer:
Keep in mind this changes from microscope to microscope.
Explanation:
On most classroom microscopes, there will be two knobs on either side of the scope. These will increase or decrease the height of the "stage", which is how you "focus" the microscope. The larger knob will move the stage the most, and thus, is called the coarse focus. The smaller knob is called the fine focus, and, you guessed it, will move the stage the least. There are usually three "objective lenses". Each will have a different magnification and will be listed on the lens itself. It rotates around the "revolving nosepiece". MAKE SURE THAT THE SLIDE IS LOWERED BEFORE ROTATING THE LENSES!!!! If you don't you WILL break the slide and you WILL get death looks from the teacher.
On the stage, there are two clips. They move NOT up and down, but they spin. what you want to do is to move the slide into the clips. They will not break if you do not bend them more than what the slide will bend them to.
The technique for focusing the microscope is really easy once you do it a few times. After making sure that the microscope is plugged in and the light on and the slide and lens in the lowest position/magnification (!) move the coarse focus knob so that the object in the slide is just visible. Once you do that, from there use the fine focus knob to make the object most visible.
These instructions vary slightly from model to model of microscope, but the picture below is very accurate and everything I warned you about is for all microscopes.
Which statement is true regarding kinetic energy and potential energy?
Both kinetic energy and potential energy rely on motion.
Both kinetic energy and potential energy are stored energy.
Potential energy relies on motion, while kinetic energy is stored energy.
Kinetic energy relies on motion, while potential energy is stored energy.
Answers
Answer: kinetic energy relies on motion, while potential energy is stored energy.
Explanation:
Which of the following always changes when a substance undergoes a chemical change?
A. State of matter of the substance.
B. Arrangement of the atoms composing the substance.
C. Color of the substance.
D. Mass of the substance.
Answers
Answer:
C
Explanation:
All chemical reactions will show a change in color.
The Joule is an SI unit of:
A. Voltage
B. Pressure
C. Work
D. Resistance
Answers
Answer: hope this helps ♡
C. Work
Joule is an SI unit (International System of Units) of Energy.
Work
Joule is the SI unit of work (J). The unit bears the name of James Prescott Joule.
The work accomplished by a force of one newton causing a displacement of one meter is known as a joule. Work is sometimes measured in newton meters (N-m).
Force applied over a distance is what we refer to as work. Examples of work include lifting a captive helium balloon and pushing something against gravity while operating a car up a hill. The mechanical manifestation of energy is work.
Work can be either positive or negative because the applied force can be either negative or positive.
The formula of work is
Work = Force x Distance
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