how many moles are there in 1 mole of argon?​

Answers

Answer 1

the atomic mass of argon is 39.948. That means that one mole of argon weighs 39.948 grams (39.948 g/mol).


Related Questions

Significant digits for the number 80

Answers

Answer:

8 and 0

Explanation:

8 and 0 together make 80

Which of the following is an oxidation-reduction reaction? Fe2O3 3CO Right arrow. 2Fe 3CO2 CuSO4 2NaOH Right arrow. Cu(OH)2 Na2SO4 2NaOH H2CO3 Right arrow. Na2CO3 2NaOH Pb(NO3)2 Na2SO4 Right arrow. 2NaNO3 PbSO4.

Answers

The reaction, Fe2O3 + 3CO------> 2Fe + 3CO2 is an oxidation-reduction reaction.

An oxidation-reduction reaction is a reaction in which there is a change in oxidation number from left to right in the reaction. This is because, a specie is oxidized and another specie is reduced.

In the reaction;  Fe2O3 + 3CO------> 2Fe + 3CO2, we can see that the oxidation number of iron decreased from +3 on the left hand side to zero on the right hand side. The oxidation number of carbon was increased from + 2 to +4.

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Answer:

A

Explanation:

EDGE2022

BRAINLIEST TO FIRST RIGHT ANSWER

Students were investigating heat transfer by conduction and they set up the simple experiment you see here. They utilized three spoons made of different materials: the specific heat capacity of each material was recorded in the students' data table. Each spoon was placed in a pot of hot (90°C) water and a pat of butter was placed on the handle of each spoon. The butter melted first on the tin spoon and in about the same amount of time on the plastic and wood spoons. Based on the data table and the experimental results select ALL of the conclusions that are appropriate.

A) Conduction occurred more readily in the tin due to its lower specific heat
capacity

B) Heat transfer via conduction occurred from the hot water to the spoons
and then to the butter,

C) When in contact with hot water, there was no transfer of kinetic energy
through the wood or plastic

D) The atoms in the tin spoon vibrated and collided at a greater rate thon
those in the wood or plastic spoons

E) In all three cases energy s transferred from the faster moving hot water
molecules to the slower moving molecules in the spoon​

Answers

Answer:

the Answer is A B D

Explanation:

the cunduction in the spoons are equal to all the following answers

Conduction occurred more readily in the tin due to its lower specific heat capacity, Heat transfer via conduction occurred from the hot water to the spoons and then to the butter, The atoms in the tin spoon vibrated and collided at a greater rate thon those in the wood or plastic spoons. Thus option A,B, D are correct.

What is specific heat ?

Specific heat can be measured as the quantity of heat required to increase the temperature of one gram of a substance by one degree Celsius.

The units of specific heat  are represented as calories or joules per gram per Celsius degree such as the specific heat of water is 1 calorie  per gram per Celsius degree

Specific heat capacity= Heat quantity/ mass × change in temperature.

If Q is the quantity of heat in joules, M is the mass of substance heated,

If ∆O is the change in temperature in Kelvin, Then Q= MC∆O, C is a constant called Specific heat capacity. Therefore, making C the subject of formula:

C= Q /M∆O

Thus option A,B, D are correct.

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Write the scientific term "A number used by Bohr in the explanation of the spectrum of hydrogen atom and designated by the symbol (n) " ?​

Answers

Answer:

Quantum number

Explanation:

Where are nonmetals located in the periodic table?



Question 8 options:

along the upper left side

in the middle

along the upper right side

along the bottom

Answers

Answer: They are located along the upper right side of the periodic table.

Explanation: Malleability is a physical property that some elements of matter have that can be broken down into sheets to give them a certain shape without breaking. This physical property belongs to plasticity. It is a characteristic that some metals have, sheets of said metal can be obtained. The heat needs to be increased, some examples are gold, platinum, zinc, tin, etc.

kcal/mole
EE E E
SODIUM
1s 2s 2p 3s
118
1091
1653
MAGNESIUM 1s 2s 2p 3s2
175
345
1838
2526
ALUMINIUM
1s 2s 2p 3s 3p
138
434
656
2767
If the valence electrons were removed, what would be the lon charge of the element?
Na =
O-1
+1
0-3
+3

Answers

Answer:

+1

Explanation:

your removing a electron and it was already balanced

Which atom has the largest atomic radius? *
1.Cl
2.F
3.I

Answers

Answer: 2

Explanation:I think

which of the following substances is most soluble in water
a). table salt
b). baking soda
c). Epsom salt
d). table sugar

Answers

Answer:

Table salt

Explanation:

Is most soluble in water

(07.05 HC A scientist investigating electrically-charged objects has decided to test if the number of times you rub a cloth against a balloon increases the amount of time it will stick to the wall. She wrote down her variables in a table. Variable Description Test The numbers of times she rubbed the cloth against the balloon Outcome The length of times the balloon sticks to the wall Control The cloth used in the experiment What would be her hypothesis for this experiment? (2 points) If you stick the balloon to a wall, then it will become electrically charged and stay there for a long period of time If you change the cloth used to change a balloon

Answers

Answer: the answer is  b

Explanation:I took the test and got it

pls mark as brainliest if correct for you

Name these ionic compounds
12. Ag3N
13. NaF
14. Ba
15. Na2S
16. AIBr;
17. LiN
18. KF
19. Srl2
20. Mgo
21. Al2O3
22. CaH2

Answers

12. silver nitride

13. Sodium fluoride

14. barium

15. sodium sulfide

16. aluminium bromide

17. lithium nitride

18. potassium sulfide

19. strontium iodide

20. magnesium oxide

21. aluminium oxide

23. calcium hydride

Calculate the molar mass for CO

Answers

Answer:28.01 grams

Explanation:

I need to right a journal entry for school but i don't know what to put Write a journal entry from the perspective of a particle of light,
called a photon. Your story should follow the photon as it
travels from a star in the Milky Way that is 25 light years away
from Earth, all the way to the eye of a young person gazing up
at the night sky through their bedroom window. Compose your
entry in complete sentences.

it is for my 5 grad sicenc

Answers

Answer:

here you go

Explanation:

someone help me on this but i still got a hundred

Using the periodic table, choose the more reactive nonmetal.
Br or As

Answers

Br and As:

Bromine is more reactive as reactivity increases on moving from left to right in p-block

Carbon-14 emits beta radiation and decays with a half life of 5730 years. Assume you start with 2.5x10^15 grams of Carbon-14, how many grams remain at
the end of 5 half lives?
A. 1.1x10^-10 g
B. 2.5x10^-10 g
C 1.3x10^-10 g
D. 5.0x10^-10 g

Answers

The amount remaining at the end of 5 half-lives is 7.81×10¹³ g

From the question given above, the following data were obtained:

Half-life (t½) = 5730 yearsOriginal amount (N₀) = 2.5×10¹⁵ gNumber of half-lives (n) = 5Amount remaining (N) =?

The amount remaining can be obtained as follow:

N = 1/2ⁿ × N₀

N = 1/2⁵ × 2.5×10¹⁵

N = 1/32 × 2.5×10¹⁵

N = 0.03125 × 2.5×10¹⁵

N = 7.81×10¹³ g

Therefore, the amount remaining after 5 half-lives is 7.81×10¹³ g

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How many atoms of carbon are present in 4.10 moles??!

Answers

Answer:

2.4×1024 atoms.

Explanation:

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The barometric pressure in Breckenridge, Colorado (elevation 9600 ft) is 580 mmHg. How many kPa is this?

Answers

Answer:

1 atmospheric pressure = 760.0 mm Hg

Thus 580 mm Hg = (580 mm Hg/(760 mm Hg/atm))

= 0.763 atm

explain how redox reactions are involved in energy exchanges

Answers

Redox reactions involve one substance losing electrons (oxidized) and another substance gaining electrons (reduced) in the same reaction. As electrons are transferred between substances, the electrons lose potential energy and energy is released.

In a laboratory, a student combines vinegar and baking soda into a beaker. The initial temperature is 28 degrees Celsius and the final temperature reading two minutes later is 20 degrees Celsius.

1. What happened to the heat in the surroundings?


2. Did an endothermic or exother mic reaction occur​

Answers

The reaction is endothermic because the temperature dropped from  28 degrees Celsius to  20 degrees Celsius.

Meaning of endothermic and exothermic reaction:

An endothermic reaction is one in which heat is absorbed from the surrounding resulting in decrease in temperature while an exothermic reaction is one in which heat is evolved causing the temperature to rise.

In the particular context of this question, the reaction is endothermic because the temperature dropped from 28 degrees Celsius to 20 degrees Celsius. The heat in the surroundings decreased.

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Why are the melting and boiling points of an
element or a compound are called its fixed points.

Answers

Substances having fixed chemical proportions will have fixed boiling and melting points. This is the reason that Pure substances have specific melting and boiling points because their chemical proportions are fixed. Mixtures melt and boil over a range of temperatures

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2. Is the following sentence true or false? Most earthquakes generate
tsunamis.

Answers

Most earthquakes have the ability to cause earthquakes, but it really depends on where the earthquake is. But yes that’s true.

In 1980 the Mt. St. Helens volcano erupted and impacted thousands of square miles of forest.Some areas are still undergoing secondary succession where

Answers

Answer:

Explanation:

1: Pioneer species are the first to colonize: During primary succession in lava on Maui, Hawaii, succulent plants are the pioneer species. After weathering breaks down the lava into the soil, the plants are able to take root. These plants will help to further change the soil by adding nutrients to it.

The first organisms to appear in areas of primary succession are often mosses or lichens. These organisms are known as pioneer species because they are the first species present; pioneer species must be hardy and strong, just like human pioneers.






please please answer this question!!!!!!​

Answers

cell membrane - phospholipd bilayer

pigmented - chloroplasts

chloroplasts - oval shaped with two membranes

rectangular or cubed - plant cell

nucleus - control centre

hope that's what you are looking for

how many moles of oxygen molecule is reacting with sodium according to the following reaction:
2Na+O - Na2O2

Answers

1 mole of oxygen.

Answer:

solution given:

[tex]2Na+O_2=Na_2O_2\\2mole\:\: 1mole \:\: 1mole[/tex]

according to the above reaction,1 mole of oxygen is required to react with 2 moles of sodium to form sodium peroxide.

Explanation:

a sample osoxooso sixisoxoso

Answers

Answer:

I believe the correct answer is A.

Explanation:

He atoms are smaller than Ne atoms (4AMU vs 20AMU).  Although the kinetic energy and concentrations are the same (same temperature and each have 0.5 mole  in 10.0L containers), the kinetic energy is a product of mass and velocity.  Since the Ne mass is greater, it will have a lower speed, thus taking longer to bounce out the pinhole.

where does oxidation occur in an electrochemical cell

Answers

Anode


According to the mnemonic “Red Cat An Ox”, oxidation occurs at the anode and reduction occurs at the cathode. Since the reaction at the anode is the source of electrons for the current, the anode is the negative terminal for the galvanic cell.

The amount of energy involved when an electron is acquired by a neutral gaseous atom is what?

Answers

Electron gain enthalpy of the atom - if im not wrong

Look at the diagram below. What type of bond does it show?

Answers

Explanation:

it shows covalent bonds

The type of bond the diagram shows is covalent bond. As shown the sharing of electrons in the diagram.

What are bonds?

Bonds are defined as any of the interactions that lead to atoms joining together to form molecules, ions, crystals, and other stable species that make up the familiar materials found in everyday life. The ability to build molecules is made possible by a chemical bond, which is a strong attraction between atoms, ions, or molecules. Chemical bonds that hold molecules together also form temporary connections vital for life.

Covalent bond are defined as a type of chemical link where atoms share electrons to create electron pairs. Low melting and boiling temperatures, low vaporization heat, low water solubility, and poor conductivity are four characteristics of covalent compounds.

Thus, the type of bond the diagram shows is covalent bond. As shown the sharing of electrons in the diagram.

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Why is salt a mineral

Answers

Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in the form of a natural crystalline mineral is known as rock salt or halite. ... Salt is essential for life in general, and saltiness is one of the basic human tastes

what activity occurs in the process of photosynthesis

Answers

Answer:

Photosynthesis is the process in which light energy is converted into chemical energy in the form of sugars. In a process powered by light energy, glucose (and other sugars) molecules are created from water and carbon dioxide, while oxygen is released as a by-product.

Explanation:

i'm mexican

Cells of the immune system are able to respond to the
presence of invading organisms because they
recognize the
A) antigens present on the invaders
B) antibodies present in invading pathogens
C) DNA pattern in the nuclei of viruses
D) antibiotics released from microbes

Answers

Answer:

A) antigens present on the invaders

Explanation:

Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles (such as a splinter) can also be antigens. The immune system recognizes and destroys, or tries to destroy, substances that contain antigens

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