What is the formula name for Mn(NO3)3 ?
Answer:
Alias: Manganic Nitrate. Formula: Mn(NO3)3. Molar Mass: 240.9527. :: Chemistry Applications:: Chemical Elements, Periodic Table. its on google
Maceo is making rock candy. Which best describes the steps she should take? heat a saturated sugar water solution, dissolve more sugar, then let the solution cool heat a saturated sugar water solution, dissolve more sugar, and wait until the water evaporates saturate a water solution, increase the pressure, and dissolve more sugar saturate a water solution, lower the pressure, and dissolve more sugar
Answer:
(A) is the answer
Explanation:
(A) heat a saturated sugar water solution, dissolve more sugar, then let the solution cool
Answer:
the answer is a
Explanation:
im on edg rn
Why do you THINK the Earth's inner core is solid, despite being about 5000 degrees celsius, far above the melting points of metals.
Answer:
Explanation:
Because inner the core is really a hot and contains mostly made of metals like irons
1. How many isotopes does hydrogen have?
Answer:
There are 3 isotopes of the element hydrogen.
Explanation:
hydrogen, deuterium, and tritium.
Answer:
Hydrogen has three isotopes.
Explanation:
I hope this helps!
:)
A 100.0 gram sample of water at 50.0oC is mixed with a 50.00 gram sample of water at 20.0oC. What is the final temperature of the 150.0 grams of water?
Answer:
35 °C is the final temperature.
Comment if you need step to step explanation.
A 100.0 gram sample of water at 50.0°C is mixed with a 50.00 gram sample of water at 20.0°C. 35 °C is the final temperature of the 150.0 grams of water.
What is temperature?The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature. Thermometers are calibrated using a variety of temperature scales, which historically defined distinct reference points or thermometric substances.
The most popular scales are indeed the Celsius scale, sometimes known as centigrade, with the unit symbol °C, the Fahrenheit level (°F), as well as the Kelvin scale (K), with the latter being mostly used for scientific purposes. Among the seven units inside the International Units of Measure is the kelvin (SI).
Final temperature = (m₁×T₁×c₁ + m₂×T₂×c₂)/( T₁+ T₂)
= (100.0×50.0×4.18 + 50.00×20.0×4.18 )/( 50.0+ 20.0)
= 35 °C
Therefore, 35 °C is the final temperature of the 150.0 grams of water.
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what is aluminum is chemistry
Answer:
Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. It is a silvery-white, soft, non-magnetic and ductile metal in the boron group. ... Aluminium is remarkable for its low density and its ability to resist corrosion through the phenomenon of passivation.
Explanation:
i did aluminum chemistry
Which statement best describes a property of a compound? A compound is made up of a single atom. B. A compound is made up of many atoms that are all the same type. C. A compound can be separated into two or more elements through physical processes. D. A compound can be separated into two or more elements through a chemical reaction.
Answer:
D. A compound can be separated into two or more elements through a chemical reaction.
Explanation:
By method of elimination, we are going t obtain the correct option.
A. A compound is made up of a single atom.
This is wrong because, a compound can contain more than one atom. An example is H2O
B. A compound is made up of many atoms that are all the same type.
This is wrong because a compound can contain atoms of different elements. An example is H2O. It contains atoms of hydrogen and oxygen.
C. A compound can be separated into two or more elements through physical processes.
This is wrong. H2O being a compound cannot be separated by ordinary physical means.
D. A compound can be separated into two or more elements through a chemical reaction.
This is the correct option.
Name the type of reaction and give the coefficients needed to balance the following skeleton reaction: ___Mg + ___Fe2O3 → ___Fe + ___MgO A) synthesis with coefficients 3,1,2,3 respectively B) synthesis with coefficients 3,2,2,3 respectively C) single replacement with coefficients 3,1,2,3 respectively D) Single replacement with coefficients 1,1,2,3 respectively
Answer:
C,
Explanation:
3Mg + Fe2O3 ---> 2Fe + 3MgO
this is a single replacement reaction.
Suppose that an electron starts in the n=4 shell of a neutral hydrogen atom. How many photons will be emitted once it has fallen to the n=1 shell?
Answer: If an Atom has 12 Electrons then if it is a Neutral atom then the Atomic Number of the Atom will be 12.
The Electronic Configuration of Element with Atomic Number 12 will be :
⇒ 1s² 2s² 2p⁶ 3s²
We can notice from the Electronic Configuration that :
Given atom has 2 electrons in the 1st shell.
⇒ In the Shell : n = 1
Number of Electrons = 2
In the similar way : Number of Electrons in 2nd shell = 2 + 6 = 8
⇒ In the Shell : n = 2
Number of Electrons = 8
In the similar way : Number of Electrons in 3rd shell = 2
⇒ In the Shell : n = 3
Number of Electrons = 2
Explanation:
When an electron starts in the n=4 shell of a neutral hydrogen atom and once it has fallen to the n=1 shell, then 3 photons will be emitted.
What is emission of energy?If any electron is presnt in the highest energy shell of an excited atom and when comes back to the ground state then emission of energy takes place.
As we know that by the absorption of one photon, electron will goes on the succeding shell from the previous shell. Similarly when electron come back to the 3rd shell from the 4th shell of a hydrogen atom then 1 photon will emit, from 3rd to 2nd shell 2nd photon will emit and from 2nd to 1st shell 3rd photon will emit.
Hence 3 photons will be emitted once electron will fall into 1st shell from the 4th shell.
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What does electronegativity measure
1) Which of the following is NOT a step in the scientific method *
Formulating a scientific question
Making Observations
Developing a hypothesis
Applying for a license
Answer:
applying for a license
Answer:
Applying for a license
Explanation:
This is because you have to have observations,hypothesis and a scientific equation when using The Scientific Method.
How many elements are found in the following chemical equation? K + Cl → KCl
Answer:
2
Explanation:
What is required to know the velocity of an object
Answer:
n order to find the velocity of the moving object, you will need to divide the change in position by the change in time. Specify the direction moved, and you have the average velocity
Velocity of an object can be measured from the distance travelled by the object and the time taken to travel. Also we can find it from the kinetic energy of the object if known.
What is velocity?Velocity of an object is the rate of its speed. It is a physical quantity which measure the displacement occurred for an object within unit time .Mathematically it is the ratio of distance or displacement to the time.
Kinetic energy is generated in an object by virtue of its motion. It is directly proportional to the mass m and square of the velocity v by the relation written below:
KE = 1/2 MV²
By this relation we can say that the velocity of an object is inversely proportional to the mass of the object. If mass increases velocity decreases. Lighter objects moves in higher velocity.
Hence, we can know the velocity of an object by the distance and time of travel or movement of that object as well as from its kinetic energy.
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Which of the following is a method used by atoms to form a chemical bond?
A strong chemical bond is formed from the transfer or sharing of electrons between atomic centers.
Type the correct answer in the box. Spell all words correctly. What is cogeneration? Cogeneration is a process of producing electricity and simultaneously.
Answer:
we need to see the answers-
Answer:
Heat
Explanation:
Just took the test, hope this helps!
It's important to remember that elements are
No, unless you're doing some sort of course where they demand that you do. It's useful to remember the general features of the periodic table (what each block is, where they are in relation to each other, roughly where the most common elements are), but memorizing the entire thing would simply be a mnemonic exercise
Hope this helped
Answer:
i used a vent to vented
Explanation:
If you could change one thing about distance learning, what would it be?
Answer:
Nothing
Explanation:
BECAUSE DONT ASK
what is a renewable resource ?
Answer:
A renewable resource is a resource that can be made, Ex: trees or energy.
Explanation:
Answer:
energy source that cannot be depleted.
Explanation:
HELP ASAP FOR BRAINLIEST
How much does a 200 kg car weigh?
*this is for a newtons law paper, i need to show work*
(02.02 LC)
Which of the following is an example of chemical weathering?
Frost wedging
O Animal activity
Plant growth
O Acid rain
Answer: acid rain
Explanation: Acid rain is one way in which rocks can be chemically weathered. It can harm forests and crops, damage bodies of water, and contribute to the damage of statues and buildings. In this activity you will simulate the chemical weathering of limestone, which is a soft, sedimentary rock that reacts easily to acid rain.
the energy level of the valence electrons in Nitrogen
Answer:
NITROGENValency = 3Atomic number = 7Electronic configuration consist
K = 2 , L = 5on the basis of sub shell
1s^2 , 2s^2 , 2p^3
Discuss the molecules in solids, liquids and gases. Include how the molecules move, including the speed of the molecules and the
space between the molecules.
Answer:
Molecules in solids are tightly packed because the atoms are freezed together. Molecules in liquids are loosely packed because atoms are broken down and can move anywhere. Molecules in gases are free; the atoms can move or spread anywhere.
Solids do not move; hence no speed.
Liquids move and slide past past each other.
Gases move freely at high speeds
True or false : An ion is a substance in which the atoms of two or more elements are combined in a fixed proportion
Answer:
The answer would be "True"
What is the voltage of an electrolytic cell with zinc and aluminum electrodes?
O A. -2.44 V
B. -0.92 V
C. 2.44 V
O D. 0.92 V
From the calculation, the voltage of the electrolytic cell is -0.92 V
What is an electrolytic cell?An electrolytic cell is is cell that produces energy by a nonspontaneous chemical process. The anode of this cell is zinc while the cathode is aluminum.
The voltage of the cell is obtained from Ecathode - E anode = -1.66 V - (-0.74 V) = -0.92 V
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Describe in two-five-sentence paragraphs the characteristics a substance must have to be
considered a mineral.
Answer:
A Mineral can be identified if they have the following properties:
1) Naturally occurring: it should be present in nature on its own, steel is not a mineral because it is made manually.
2) Inorganic it should not be produced by any organism
3) Solid It should not be in liquid or gaseous state, water is not a mineral because its liquid.
4) Definite chemical composition it should have a limited variation in its chemical properties.
5) Ordered internal structure it should have definite internal repeating structure that does not varies much.
Velocity is a combination of what 2 things?
Answer:
Velocity is a combination of speed and direction
define uniform velocity
Answer:
Ok So....
Explanation:
The condition in which a body covers equal distance in an equal interval of the time is known to be uniform velocity. if both its magnitude and direction do not change with time then it can be said that the body is at uniform velocity. Hope this helps!~ (Sorry if you get it wrong or I did-)
You place 12.0 milliliters of water in a graduated cylinder. Then you add 15.0 grams of metal to the water and the new water level is 13.91 milliliters. What is the density of the metal in grams per milliliter?
Answer:
The answer is 7.85 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
volume = final volume of water - initial volume of water
volume = 13.91 - 12 = 1.91 mL
We have
[tex]density = \frac{15}{1.91} \\ = 7.853403141...[/tex]
We have the final answer as
7.85 g/mLHope this helps you
Answer:
Hello, Im Mack :)
Here is the Correct Solution for your question:
Answer is 7.85 g/mL
Explanation:
The density of a substance can be found by using the formula
-volume = final volume of water - initial volume of water
-volume = 13.91 - 12 = 1.91 mL
-Final Answer is: 7.85 g/mL
Hope this helped you out :)
Comment if you need further help, and I'll reply asap.
Have a great day my friend\ and best of luck to your studies :)
Answer the question and you'll get brainilest!
Answer:
im just gonna explain how a speaker works and how it can make a window move. So a speaker has a crystal in it that when hit with and electric charge moves like a diaphragm that makes sound waves. the more electricity the slower it moves yet the slower it moves the bigger the movement. Anyway when that crystal moves it also moves the cardboard pice in front of it making a louder sound. The best way to think about it is a sound wave is like wind, its just moving air. so that moving air can push and pull something like a window pane. Cool Huh?
Explanation:
What is the difference between magnetic stripping and magnetic field reversal?