how many atoms of argon gas are in 137 ml container at the pressure in the container is 8.80 X 10^5 mmhg and the temperature to 794 K
Answers
Answer:
#Ar atoms = 1.47 x 10²²
Explanation:
PV = nRT => n = PV/RT
P = 8.80 X 10⁵ mmHg = 8.80 X 10⁵ mmHg/760mmHg·atm⁻¹ = 11.58atm
V = 137ml = 0.137 Liter
n = ? moles Ar = ? moles Ar x 6.02 x 10²³ Atoms Ar/mole Ar
R = 0.08206 L·atm/mol·K
T = 794K
PV = nRT => n = PV/RT = 11.58atm·0.137L / 0.08206L·atm/mol·K·794K
=> n = 0.0243mole Ar = 0.0244mole Ar x 6.02 x 10²³ atoms Ar/mole Ar
= 1.47 x 10²² atoms Ar
Related Questions
What are the main properties of any liquid? Explain how you can measure the volume of a liquid sample.
Answers
Answer:
Liquid has the following properties -
- Liquids are almost incompressible due to the fact that molecules do not have a lot of space between them so they can not be compressed.
- Liquids have a fixed volume but shape varies according to the container it is placed in. It changes the shape even the volume is the same.
- Liquids flow from higher to lower levels.
- Liquids have their boiling points above room temperature, under normal conditions.
Measure the volume of a liquid sample-
The volume of the liquid can find out by dividing the mass of the liquid by the density of the liquid. D = m/v. The density of water is 1 gram/cubic centimeter.
What is meant by the term chemical bond? What subatomic particles(protons, neutrons, electrons) are most important in bonds?
Answers
Explanation:
Chemical Bonding refers to the formation of a chemical bond between two or more atoms, molecules, or ions to give rise to a chemical compound.
The subatomic particles that participate are electrons.
In a solution, the substance that has been dissolved is called the...
Answers
Answer:
solute
Explanation:
The substance being dissolved is called a solute. The thing the solute is being dissolved in is called a solvent.
SOLUTE
(7.6 x 104m) x (1.5 x 107m)
Answers
Answer:
the answer should 126 859.2 m2
hope this helped !
Distillation is the process of seperating liquids by using ____.
A: a catalyst
B: a centrifuge
C: precipitation and transpiration
D: evaporation and condesation
Please answer this quickily (who ever answers this correctly and answers it first gets brainliest)
Answers
Answer:
a
Explanation:
i think
Based on the information in the tables, which salt will produce the greatest change in temperature when dissolved in water at 20 c
Answers
Answer:
See Explanation Note ...
Explanation:
Depending on amount added, Anhydrous CaCl₂ when dissolved in water solvent can become hot enough to blister ones skin when touched. On the cold side, Ammonium Nitrate will cool an aqueous solution enough to generate condensate frost on the outside of a glass beaker. I'm sure there are more examples but these two came to mind.
Answer:
KOH
Explanation:
I took the test
how are enthalpy and entropy related to chemical reactions? (in simple terms)
Answers
Answer: Enthalpy is the heat content of a system. The enthalpy change of a reaction is equivalent to the amount of energy lost or gained during the reaction. A reaction is favoured if the enthalpy of the system decreases over the reaction. Entropy refers to the measure of the level of disorder in a thermodynamic system.
Explanation: hi lol
HELP ASAP
What was the result of the atomic theory?
A. Alchemy was transformed into a true science.
B. The atom was discovered.
C. Scientists realized there were four main elements.
D. Chemists began to better understand the properties of matter.
Answers
The result of the atomic theory was that chemists began to better understand the properties of matter. Therefore, option (D) is correct.
The atomic theory, proposed by John Dalton in the early 19th century, postulated that matter is composed of indivisible particles called atoms. This theory revolutionized the field of chemistry by providing a framework to understand the behavior and interactions of different substances.
By recognizing that matter is composed of discrete atoms with specific properties, chemists were able to explain phenomena such as chemical reactions, the conservation of mass, and the formation of compounds. The atomic theory laid the foundation for modern chemistry, leading to advancements in understanding the structure of atoms, the development of the periodic table, and the ability to manipulate and engineer materials at the atomic level.
Learn more about atomic theory, here:
https://brainly.com/question/28853813
#SPJ2
The mass of an atom is equal to the number of
Neutrons, only
Protons, only
Neutrons plus protons
Electrons plus protons
Answers
Explanation:
proton number and neutron number sums up to form the mass number
Answer:
Neutrons & protons
Explanation:
hope it's help..
Which statement accurately compares plant and animal cells?
A. A plant cell has a nucleus, but an animal cell does not.
B. A plant cell has a cell membrane and a cell wall.
C. An animal cell has a cell membrane and a cell wall.
D. An animal cell has mitochondria, but a plant cell does not
Answers
Answer:
B
Explanation:
A plant cell has a cell membrane and a cell wall
How many moles are in 25 grams of nitrogen trihydride?
Answers
Explanation:
molecules NH3 = 1.47 moles x 6.02x1023 molecules/mole = 8.9x1023 molecules of NH3 (to 2 sig. figs.)
Hi! I'm doing homework about covalent bonds in Chemistry and I am supposed to figure out which 3 are right and which 3 are wrong. I'm having a really hard time. Any help is appreciated!
Answers
Answer:1,5,4
Explanation:
I think hope this helps ☺️
List two functions organ systems can perform
Answers
Answer:
nervous system- sends signals to the brain
respiratory system- sends oxygen to the body
On the window sill is a potted plant. The plant always seems to lean toward the window. Even though you turn its pot around every morning, by evening you find that it has turned away from the center of the room and towards the window again. Why does this happen?
Answers
Answer:
because im trynna get these 5 points
Explanation:
mklnk.m
HELP DUE IN ONE HOUR PLS HELP
lons are formed when _____
are transferred between atoms.
Answers
Combustion analysis of a hydrocarbon produced
0.40g of CO2 and 0.205g of H20. Calculate the
empirical formula of the hydrocarbon.
Answers
Do the same for H2O except the mole ratio is 2 mol H / 1 mol H2O, since every mole of H2O has two moles of hydrogen in it.
0.40 g CO2 • 1 mol CO2/44.01 g CO2 • 1 mol C / 1 mol CO2 = 0.0091 mol C
0.205 g H2O • 1 mol H2O/18.02 g H2O • 2 mol H / 1 mol H2O = 0.0228 mol H
Now divide by the smallest number of moles (0.0091 moles of C) to get whole number values for both C and H rather than decimals.
0.0091/0.0091 = 1 mol C
0.0228/0.0091 = 2.5 mol H
You need whole numbers for both C and H, which you can get by just multiplying both by 2 (since 2.5 • 2 is 5).
So, your empirical formula ends up being C2H5.
how to get over a guy u have liked for a year and 4 months
Answers
Answer:
Try to find someone who is interested in you as well as you are with him. But be chill about it and never ever let yourself think your not perfect enough cause you are thee most phenomenal person in the entire planet and there is no one like you, you are special. P.S. there are alot of cute guys out there you just gotta wait until he finds you or you find him.
Explanation:
Answer:
huh
Explanation:
What tool do you use to measure a rectangle?
A. Common balance
B. Ruler
C. Graduated cylinder
Answers
Answer:
Ruler
Explanation:
Use the information and table to answer the following question.
A group of students collects data to determine whether compounds were ionic or covalent. They placed each
compound in a small bowl and stuck two open ends of a battery-powered circuit in the compound.
Compound
CO2 (s)
KCI (s)
CaO (s)
SIO2 (s)
Conductive
No
No
No
No
Based on the student's data, can they determine which substances are ionic, and which are
covalent?
A. No, as lonic compounds are only conductive in an aqueous (water) solution.
B. Yes, as all of these compounds are lonic since they are not conductive.
C. No, as covalent compounds are only conductive in an aqueous (water) solution.
C
D. Yes, as all of these compounds are covalent since they are not conductive.
Answers
Answer:
d
Explanation
all are compounds
Yes, as all of these compounds are covalent since they are not conductive. Therefore, the correct option is option D.
What is chemical compound?A chemical compound is a material made of several similar molecules (as well as molecular entities) joined by chemical bonds and comprising atoms from various chemical elements.
Chemical reactions, which may entail interactions with other molecules, can change a compound into a distinct substance. Atomic bonds may be shattered or new ones created during this process. Yes, as all of these compounds are covalent since they are not conductive.
Therefore, the correct option is option D.
To know more about chemical compound, here:
https://brainly.com/question/26487468
#SPJ5
Attraction between particles is less.
Answers
Answer:
I know the answer
Explanation:
attraction helps its capacity
hope it may helps you
3. Sexual reproduction is the process of creating a new organism by combining the
genetic information and material from parent organisms. Which of the following is
responsible for storing the genetic instructions needed to specify traits?
PLEASE HELPP
Answers
Answer:
chromosomes is responsible
The reproduction is defined as a process which involves the production of offspring. The genetic instructions are stored in chromosome. The correct option is C.
What is chromosome?A chromosome is defined as the DNA molecule which consists of all the genetic material of an organism. It is found to be present in the nucleus of each cell. The DNA inside the chromosome is tightly coiled around special proteins called histones.
All living organisms are composed of chromosomes. Humans have 23 pairs of chromosomes. 22 pairs of these chromosomes are called autosomes. These are same in both males and females. The 23rd pair of chromosomes are called allosomes and they differ between sexes.
The males have one 'X' and 'Y' chromosome, while females have two copies of the 'X' chromosome. The important function of genetic material is to store information needed by the cell to make proteins.
Thus the correct option is C.
To know more about chromosomes, visit;
https://brainly.com/question/12537598
#SPJ6
During a lab activity, students were given samples of four different unknown elements. The students record their observations as shown in the table.
Sample 1 Sample 2 Sample 3 Sample 4
shiny shiny reddish-brown colorless
high electrical
conductivity
low electrical
conductivity
low electrical
conductivity
low electrical
conductivity
solid at room temp. solid at room temp liquid at room temp. gas at room temp.
flattens when hit
with a hammer
breaks into pieces when hit with a hammer
splashes when hit
with a hammer
no effect when hit
with a hammer
boiling point:
882.9 °C
boiling point:
3265 °C
boiling point:
58.8 °C
boiling point:
-268.9 °C
Which of the following BEST identifies which element(s) in the table are metallic?
A.
Sample 1, because it is shiny and a good conductor of electricity
B.
Samples 1 and 2, because both samples are shiny and solid at room temperature
C.
Sample 2, because it is shiny and solid at room temperature
D.
Sample 3, because it is the only sample that is a liquid at room temperature
Answers
Answer: D
Explanation: Metals are solid at room temp and also are shiny and can be flattened or broken into pieces when hammered and some metals are high and low conductors of electricity.
Metals have a characteristic property of conduction and malleability and thus sample 1 is metallic.
What is conduction?Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.
In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules .
When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:
1) heat conduction
2) electrical conduction
3)sound conduction
Learn more about conduction,here:
https://brainly.com/question/12136944
#SPJ2
What is the meaning of democracy
Answers
Answer:
a system of government by the whole population or all the eligible members of a state, typically through elected representatives. its like everyone has a choiceExplanation:
Answer:
Demorcay is:The form of government of the entire population or of all qualifying members of the state, generally by elected representatives:
Explanation:
14. Energy (heat) is always transferred from ___ energy to ___ energy
A. low kinetic; high kinetic
B. high kinetic; high kinetic
C. high kinetic; low kinetic
D. low kinetic; low kinetic
Answers
Answer:i pretty sure it is high to low kinetic
Explanation: because heat or energy travels from hot heat to low heat which heat is the same as kinetic
What is the charge of electrons?
Answers
Answer:
-1
Explanation:
are absolute temperature and kelvin temperature scale the same thing
Answers
Answer:
No they are not the same..
Explanation:
Absolute temperature is the temperature of an object on a scale where 0 is in the lowest possible energy state while the kelvin is a base unit of temperature.
Argon gas is heated from 28 °C to 350K. After being heated the volume was 1.2 L. What was the original volume?
Answers
Explanation:
thinking it Charles
V1=1.03or 1L
What is the number of moles of a gas inside a 2.7L airbag at a temperature of 421K and pressure of 6.2atm?
Answers
Answer:
.48 moles
Explanation
n=PV/RT
Water contains dissolved oxygen that fish can breathe. Which factor would not increase the amount of oxygen in the water of a fish aquarium?
Answers
Answer:Place the water under brighter .
Explanation:
Which word should replace the question mark in the diagram?
A) Refraction
B) Reflection
C) Light energy
D) Rainbow
Answers
Answer:
Could you provide a diagram?
Explanation: