Answers
Answer:
The answer is the 3rd line.
Explanation:
That's the atomic number
Related Questions
Helium is classified as a(n)?
O alkaline earth metal
O alkali metal
O transition metal
O noble gas
Answers
Answer:
NOBLE GAS
Explanation:
Look At The Table Of Elements
What MUST always be true of the masses of the red and blue liquids?
А.
They will NEVER equal the mass of the purple liquid to the right of the arrow.
B.
They will ALWAYS equal the mass of the purple liquid to the right of the arrow.
Answers
PLEASE HELPP!!
True or False: Non-metal is a kind of metal.
Answers
Answer:
Explanation:
FALSE.
I hope this helps <333
:3
Emma strikes a match and sets some logs on fire. As the fire burns, which two forms of energy are released?
Answers
Answer:
Explanation:
There are changes in the chemical composition of the word.
There's light energy given off.
There's heat energy given up.
does the tempurture of the vinegar affect the volcano flow
Answers
Hope this answers your question!
7. Calculate the net charge of the following atoms.
Atom A: has 6 protons and 4 electrons
Atom B: has 9 protons and 9 electrons
Atom C: has 10 protons and 14 electrons
Atom D: has 33 protons and 29 electrons
Answers
Answer:
any atom that contains six protons is the element carbon and has the atomic number 6, regardless of how many neutrons or electrons it may have.
Explanation:
Answer:
Atom A: +2 Atom B: 0 Atom C: -4 Atom D: +4
Explanation:
We know that protons have a positive charge and electrons have a negative charge. Therefore, we will treat the electrons as a negative number. The net charge is the sum of electrons and protons.
Atom A = 6 + (-4)
because electrons as negative.
Net charge = +2
Atom B = 9 + (-9)
Net charge = 0, or neutral
Atom C = 10 + (-14)
Net charge = -4
Atom D = 33 + (-29)
Net charge = +4
Pls helppppppppppppppppppppppppp
Answers
Answer:
The sun reflects off different parts of the moon as it orbits the earth
Explanation:
Answer:
the sun reflects off different parts of the moon as it orbits the Earth.
I will brainless who can answer this all pleaseeeeej
Answers
Answer:
1. False
2. True
3. False
4. False
5. False
6. True
7. True
8. not sure
9. True
10. False
Explanation:
Which of the following represents the velocity of a light wave?
O A. E = fx2
O B. c = hxf
O C. E = hxf
O D. c = fx2
Answers
Answer:
D. c = fλExplanation:
c = fλ
where" c "is the speed of light ,
• "f" is the frequency of the electromagnetic waves,
• " λ" is its wavelength.
The term that represents the velocity of a light wave is c = fx2. The correct option is D.
What is velocity?Velocity is the speed by which an object moves or do any motion. When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time.
Light waves are the movement of waves in a direction. There are two types of transverse and electromagnetic. They are divided on the way of their movement.
The velocity of the light wave is the speed at which the light wave moves in a specific direction in time. The formula is given below:
c = fλ
Where c is the speed of light.
f is the frequency of the electromagnetic waves,
λ is its wavelength.
Thus, the correct option is D. c = fx2.
To learn more about velocity, refer to the below link:
https://brainly.com/question/20898175
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What direction would this plate move? (the plate is gray in color)
options:
from West to East
from East to West
from South to North
from North to South
Answers
Answer:
from south to north thats what it look like
Explanation:
What is the formula for Iron (3) Oxide?
Answers
Answer:
IT should be Fe2O3
Explanation:
Fe2O3
Answer:
Iron (III) Oxide = Fe2O3
what is the second most abundant gas in the atmosphere
Answers
if one mole of na3po4·3h2o is heated extensively, how many moles of water are released?
Answers
When one mole of Na3PO4.3H2O is heated extensively, three moles of water are released.
The water molecules in Na3PO4.3H2O are called molecules of water of crystallization. These molecules are not covalently bonded to the Na3PO4 molecule. They are only loosely attached to the substance.
Strong heating will drive away these molecules of water of crystallization to give three moles of water in the product.
Hence, when one mole of Na3PO4.3H2O is heated extensively, three moles of water are released.
Learn more: https://brainly.com/question/14252791
I have a question does Neptune have a atmosphere?
Answers
Answer:
Neptune has a dynamic atmosphere with a shroud of cold clouds. The average cloud temperature ranges from about -240 degrees to -330 degrees F.
In an experiment to determine how to make sulfer trioxide, a chemist combines 32.0g of sulfer with 50.0g of oxygen. She finds that she made 80.0g of sulfer trioxide and had 2.0 g of leftover oxygen. How would the chemist make 100.0 g of sulfer trioxide so that she has no leftovers?
Answers
Explanation:
i Forgot the answer sorry but ihave that moduleexamine the graph to determine half life of strontium -90
Answers
Which choice is an element? carbon dioxide water carbon air
Answers
Answer:
carbon
Explanation:
Considering the definition of elements ans compounds, carbon is an element.
Elements are simple substances that cannot be broken down by common chemical methods. The atoms in an element are the same as each other, yet they are different from those in other elements. In addition, the elements are represented by a symbol and can be found in the periodic table.
On the other hand, compounds are substances that are the result of the chemical union of two or more elements. This combination makes it impossible to identify each element by its individual and original properties. Compounds can be separated by chemical action.
In summary, the element is a pure chemical substance formed from an atom, which is characterized in that it cannot be divided or transformed by a chemical reaction. Whereas a compound is a pure chemical substance made up of a particular set of molecules or ions that are chemically bound together.
So, being:
carbon dioxide: composed of carbon and oxygen water: composed of two atoms of hydrogen and one of oxygenair: composed mainly of oxygen and nitrogenthen, carbon is an element.
Learn more:
https://brainly.com/question/20716171?referrer=searchResultshttps://brainly.com/question/13654839?referrer=searchResultsQuestion 2 Which models of the atom from task 1 are not supported by Rutherford’s experimental evidence? For each of these models, explain the experimental results that the model would predict.
Answers
Answer:
Sorry I don't know.
Explanation:
I'm only in middle school.
how many neutrons does the isotope of hydrogen called deuterium have
Answers
Answer:
The deuterium has one neutron and one proton (mass number equals 2) whereas, the far more common hydrogen isotope, protium, has no neutons in the middle.
Explanation
How do I know if a reaction is spontainous or not?
Answers
Answer:
i dont care to you
Explanation:
cause you are tuyo
the answer is this
what is the total number of valence electrons un xenon(xe)
Answers
Answer:
8
Explanation:
Hope this helps you :)
How do you separate rice grains that have accidentally mixed with flour
Answers
Why are alloys generally used to make everyday objects?
Answers
Answer:
Alloys are often stronger and less active than pure metals. Alloys have higher melting point than pure metals.
Tổng số hạt mang điện trong ion AB4 3- là 50. Số hạt mang điện trong nguyên tử A nhiều hơn số hạt mang điện trong hạt nhân nguyên tử B là 22.Cấu hình e lớp ngoài cùng của A là gì?
Answers
Jax designs an expierment to determine how the amount of sodium chloride affects the boiling point of water which is the independent /manipulated variable
Answers
Answer:
The amount of sodium chloride.
Explanation:
This is because an independent/manipulated control is something that is changed or controlled by the experimenter. Jax has control over the change of sodium, therefore the answer is the amount of sodium chloride.
I took the test and got this answer right btw. Good luck everyone :)
Someone pls help me with this I will make you brain
Answers
Answer:
The answer should be primary pollutants from a stationary source.
Explanation:
Primary pollutants are emitted directly from a source and do not change in the atmosphere, and from a stationary source because manufacturing factories have a fixed location.
Hope this helped :D
Is carbon mixed with sand a homogeneous or heterogeneous mixture
Answers
Answer:
homogeneous
Explanation:
because I said so
A carbon mixed with sand is a heterogenous mixture.
What is heterogenous mixture?
Mixture is defined as a combination to two or more simpler substances.
There are two types of mixture
Homogenous mixture - A homogenous mixture is defined as a mixture of two or more component which is uniform throughout the mixture. They include water, air, steel etc.Heterogenous mixture - A heterogenous mixture is defined as a mixture of two or more phase which is not uniform throughout the mixture. They include sand and water, salt and oil etc. They are a non uniform mixture with visible or invisible particles.Thus, carbon mixed with sand is a heterogenous mixture.
To learn more about heterogenous mixture, refer to the link below:
https://brainly.com/question/24898889
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What will happen when we replace oxygen with nitrogen in our life while breathing and what will happen if it was in our cells? (Theory no one has ever thought)
Answers
Mountains form when plates _______.
collide (convergent boundary)
have faulting occur
divide (divergent boundary)
slide past each other (transform boundary
Answers
Answer:
They form when plates collide. I hope this helps you!
the temperature at which a liquid becomes a gas is called the