How many moles are there in 3.01x10^24 atoms of argon?
Answer:
[tex]\boxed {\boxed {\sf 5.00 \ mol \ Ar }}[/tex]
Explanation:
To convert from mole to atoms, we must use Avogadro's Number: 6.022*10²³. This number tells us the particles (atoms, ions, molecules, etc.) in 1 mole of a substance. In this case, the particles are atoms of argon.
Let's create a ratio.
[tex]\frac {6.022*10^{23} \ atoms \ Ar}{1 \ mol \ Ar}[/tex]
Multiply by the given number of atoms.
[tex]3.01*10^{24} \ atoms \ Ar *\frac {6.022*10^{23} \ atoms \ Ar}{1 \ mol \ Ar}[/tex]
Flip the fraction so the atoms of argon will cancel.
[tex]3.01*10^{24} \ atoms \ Ar *\frac {1 \ mol \ Ar}{6.022*10^{23} \ atoms \ Ar}[/tex]
[tex]3.01*10^{24} *\frac {1 \ mol \ Ar}{6.022*10^{23}}[/tex]
[tex]\frac {3.01*10^{24} \ mol \ Ar}{6.022*10^{23}}[/tex]
[tex]4.998339422 \ mol \ Ar[/tex]
The original measurement of atoms has 3 significant figures, so our answer must have the same. For the number we calculated, that is the hundredth place. The 8 in the thousandth place tells us to round the 9 to a 0, which also rounds the 9 in the tenths place to a 0, then the 4 to a 5.
[tex]5.00 \ mol \ Ar[/tex]
There are 5.00 moles of argon.
Important question, please answer(worth 64 points.)
Balance this equation
___C8H18 + ____O2 ⇒ ___CO2 + ___H2O
Answer:
Is is talking about h20 water?
Explanation:
Answer:
2C8H18 + 25O2 ----> 16CO2 + 18H2O
Explanation:
Basically you can first list all your elements from your products and reactants:
C 8 x 2 C 1 x 16
H 18 x 2 H 2 x 18
O 2 x 25 O (2 x 18) + (2 x 16)
What are non examples of tissue? Help please
Epithelial
I know just one
What is the concentration of a solution of HBr if 0.40 L is neutralized by 0.20 L of 0.50M solution of LiOH?
(HELP ASAP) what is the reaction for Si + S₈ --> Si₂S₄
Synthesis reaction~~
Explanation:
Electric field lines /Conductor/ Electroscope/ Insulator Elementary charge/ Electric field/ Charging by conduction/ Charging by induction/ Potential difference
1. Separation of charges in an object without touching it is____________.
2. The work done moving a positive test charge between two points in an electric field divided by the magnitude of the test charge is the electric _________.
3. An electric __________ is a material through which charges move about easily. ___________ is giving a neutral object a charge by touching it with a charged object.
4. A material through which electrical charges does not move easily is an electrical _____.
5. The lines providing a picture of the size and strength of the field around a charged object are called the ________.
6. The property of the space around a charged object that exerts a force on other charged objects is the ______.
7. A device that helps determine charge using pieces of metal foil is a(n) _______.
8. The magnitude of the charge of an electron is the ________.
Answer: See explanation
Explanation:
1. Separation of charges in an object without touching it is (charging by induction).
2. The work done moving a positive test charge between two points in an electric field divided by the magnitude of the test charge is the electric (potential difference).
3. An electric (conductor) is a material through which charges move about easily. (Charging by conduction) is giving a neutral object a charge by touching it with a charged object.
4. A material through which electrical charges does not move easily is an electrical (insulator).
5. The lines providing a picture of the size and strength of the field around a charged object are called the (electric field lines).
6. The property of the space around a charged object that exerts a force on other charged objects is the (electric field).
7. A device that helps determine charge using pieces of metal foil is an (electroscope).
8. The magnitude of the charge of an electron is the (elementary charge)
What is the molarity of a solution containing 29g of NaCl in 1L solution?
Answer:
hope this helps
Explanation:
1M NaCl solution is 58.5 g/1000 ml , where molecular wt of NaCl being 58.5 grams , so 29.2 g of NaCl in 1000 ml of water will be equal to : 29.2g /58.5g = 0.499145299 M , so 29.2 g NaCl dissolved in 100 ml would correspond to , 0.499145299 M X 1000 ml/100 ml = 4.99145 M or about 4.99 M
6. How is Avogadro’s number used to convert moles into particles?
Explanation:
Avogadro's number is a very important relationship to remember: 1 mole = 6.022×1023 6.022 × 10 23 atoms, molecules, protons, etc. To convert from moles to atoms, multiply the molar amount by Avogadro's number.
Give six examples of complex compounds.
Answer:
Examples of complex compound include potassium ferrocyanide K4[Fe(CN)6] and potassium ferricyanide K3[Fe(CN)6]. Other examples include pentaamine chloro cobalt(III) chloride [Co(NH)5Cl]Cl2 and dichlorobis platinum(IV) nitrate [Pt(en)2Cl2](NO3)2.
How many molecules are in 3.5g of NaOH
Answer:
12.o44
Explanation:
Molar mass of naoh is 40g/mol
Number of moles=given mass/molar mass
=80/40=2mol
Again no of atoms 2x6.022x10"23=12.044
According to the concept of Avogadro's number, there are 0.527×10²³molecules in 3.5 g of NaOH.
What is Avogadro's number?Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number.Number of molecules= 3.5/40×6.023×10²³=0.527×10²³molecules .
Learn more about Avogadro's number,here:
https://brainly.com/question/20091306
#SPJ2
pls help ASAPPPP!!
BRAINLIEST
Answer:
a
Explanation:
first one i did the test trust me
How much water is needed to prepare a .50 molal solution using 0.50 moles of sodium chloride??
The amount of water needed to prepare a 0.50 molal solution using 0.50 moles of sodium chloride is 1L.
How to calculate volume?The volume of a solution can be calculated using the following formula:
Volume = no of moles ÷ molarity
According to this question, 0.50 molal solution is used to prepare 0.50 moles of sodium chloride. The volume of the solution is calculated as follows:
Volume = 0.50 moles ÷ 0.5M
Volume = 1L
Therefore, the amount of water needed to prepare a 0.50 molal solution using 0.50 moles of sodium chloride is 1L.
Learn more about volume at: https://brainly.com/question/12346232
#SPJ1
Explain why an organism dies if the respiratory and circulatory system 'paused' for a while.
Answer:
Without the respiratory system your blood would be useless. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body
Explanation:
Name the type of equation then balance. Sn,(PO2)2 + Fe(CIO): - Sn(CIO3)2 + FePO,
Answer:
ionic compond
Explanation:
Sn(ClO3)4
What is ∆G system for the system that is described by the following data?
∆H system= -232 kJ, T= 293 K, ∆S system= 195 J/K
∆G system= ∆H system - T∆S system
a. -289 kJ
b. -175 kJ
c. 256 kJ
d. 56,903 kJ
Answer:
it is a
watch for kJ vs J as the enthalpy is in kJ and entropy is in J
Explanation:
Fluorine is a reactive nonmetal in the Halogen group. What other elements below are also likely to be reactive like fluorine?
a Chlorine and Neon
b Bromine and Xenon
c Lithium and Argon
d Chlorine and Bromine
Answer:okay
Explanation:
Organisms that depend on other organisms for food are consumers. Which consumer think is a herbivore (eats plants only)
Examples of herbivores are buffalo, elk, some bird species, mice, squirrels, rabbits, and many more.
To solve this, we must know each and every concept behind herbivores and carnivores. Therefore, herbivores include cows, goats, giraffes, sheep, and zebras etc.
What is herbivores?Herbivores, often known as herbivorous animals, are creatures that eat plants, leaves, fruits, and other plant-based foods for nourishment. They are classified as primary eaters and are found at levels 2 or above in the food supply chain.
Herbivores include cows, goats, giraffes, sheep, and zebras. Interestingly, there really are herbivores who specialize in eating on specific parts of the plant; for example, frugivores are herbivores that graze on fruits, whereas folivores are herbivore that eat on leaves.
Therefore, herbivores include cows, goats, giraffes, sheep, and zebras etc.
To know more about herbivores, here:
https://brainly.com/question/1214500
#SPJ5
What happens to the sugar that plants make during photosynthesis?
문
F
It is recycled in the soil and through the roots so other consumers
can grow
It is released by the stoma in the leaves and made available to
other consumers
It is used for growth and maintenance of the plant and a small
amount is available to feed consumers.
None of the above
Answer:
glucose
Explanation:
plants use sunlight water and the gases in the air to make glucose which is aform of sugar
Hey bedoorrr
Cheetosss
Answer:
this is really insightful, thank you
Explanation:
How many moles of silver nitrate are there in 80.00 grams of silver nitrate?
Answer:
0.47094837228 moles
Explanation:
silver nitrate=169.87g per mol
80/169.87 = 0.47094837228
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.47moles of silver nitrate are there in 80.00 grams of silver nitrate.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically,
number of moles of substance =given mass of substance ÷ molar mass of substance
Molar mass of 1 mole of silver nitrate=169.87g/mol
mass of silver nitrate= 80g
Substituting all the given values in the above equation, we get
number of moles of silver nitrate=80 ÷169.87
=0.47moles
Therefore, 0.47moles of silver nitrate are there in 80.00 grams of silver nitrate.
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ2
When a solid suddenly appears when two substances are mixed, and it settles to the bottom, collects on another object, or makes a solution loudy, that solid is known as a _____. pls help ASAP!
Answer:
Precipitates Form
Explanation:
I apologize if I am wrong
Describe the radial velocity curve. What is its shape? What is its amplitude? What is the orbital period?
Answer:
The radial velocity curve describes how fast a star is moving in its orbit around a center of mass ( m )
Curve amplitude : This is the maximum value of the radial velocity curve
Radial velocity shape ; The shape of Radial velocity curve is parabolic in nature
Orbital period : Orbital period is the time taken by the star to make one complete rotation in its orbit
Explanation:
The radial velocity curve describes how fast a star is moving in its orbit around a center of mass ( m ) while Curve amplitude is the maximum value of the radial velocity curve also The shape of Radial velocity curve is parabolic in nature. and Orbital period is the time taken by the star to make one complete rotation in its orbit
Complete the following table based on known properties of ionic and covalent compounds.
Answer:
structure of KF - ionic
Explanation:
Find the molar mass of CaCO3
Answer:
molar mass of caco3 is
100.0869 g/ mol
Number 1 plsssssssssssssssssssssssss
The development of a nuclear power plant at an ocean site is expected to produce an enormous amount of electric power for a large population. Ocean water will be used to cool the plant and then returned to the ocean. What unintended consequences should be analyzed before starting construction?
Explanation: The awnser would be The effects of warmed water on aquatic life
A sample of gas has an initial volume of 15 L and an initial pressure of 4.5 atm. If the pressure changes to 1.8 atm, what is the new volume, assuming that the temperature remains constant?
Answer:
37.5 L
Explanation:
Initial Volume, V1 = 15L
Initial Pressure P1 = 4.5 atm
Final Pressure, P2 = 1.8 atm
Final Volume V2 = ?
The relationship between these variables is given as;
P1V1 = P2V2
V2 = PIV1 / P1
Inserting the values;
V2 = 4.5 * 15 / 1.8
V2 = 37.5 L
Answer: The new volume is 37.5L
Explanation:
The question is solved using the principle and formula of a gas law known as the Boyle's law. Boyle's law states that provided the temperature remains constant, the volume of a given mass of gas is inversely proportional to its pressure. Expressing the statement mathematically:
P ∝ 1/V, (where p is equal to pressure and V is volume)
Therefore PV = a constant
If a gas at pressure P1 and Volume V1 changes at constant temperature to pressure P2 and volume V2 then:
P1V1 = P2V2.
Using the formula to solve the question:
P1 = 4.5atm
P2 = 1.8atm
V1= 15L
V2 = ?
V2 = P1V1/P2
V2= 4.5 × 15 /1.8
V2 = 67.5/1.8
V2 = 37.5 L
Therefore the new volume is 37.5L
What type of ion is responsible for activating the vesicles in the axon terminal
а
ОО
Magnesium
Rubidium
b
С
Calcium
d
8
Phosphorus
Fluorine
е
Answer:
Calcium ions
Explanation:
Calcium ions entering the cell initiate a signaling cascade that causes small membrane-bound vesicles, called synaptic vesicles, containing neurotransmitter molecules to fuse with the presynaptic membrane.
What is the chemical formula for dintrogen monosulfide?
Answer:
sulphur mozron tried is an ignore a compound with the formula SN it is the Sulphur and a log of the traditional nitric oxide no sulphur monitor ID names smiles and plus s - properties chemical formula and as molar mass 46.07 gmo l - 1
Human body cells are made by doing what ?
Answer:
When cells become damaged or die the body makes new cells to replace them. This process is called cell division. One cell doubles by dividing into two. Two cells become four and so on.
Explanation: