A 2.4L balloon filled with helium at room temperature 25oC is put into liquid nitrogen
(-196oC). What will the new volume be?

Answers

Answer 1

Answer:

V₂ = 0.62 L

Explanation:

Given data:

Initial volume = 2.4 L

Initial temperature = 25°C

Final temperature = -196°C

Final volume = ?

Solution:

Initial temperature = 25°C (25+273 = 298 K)

Final temperature = -196°C ( -196+273 = 77 K)

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 2.4 L × 77 K / 298 k

V₂ = 184.8 L.K / 298 K

V₂ = 0.62 L


Related Questions

Which formula is an ionic compound?

CO2

NaF

N2

NO2

Answers

Answer:

def CO2

Explanation:

two atoms bonded together will remain some distance apart minimizing the A. Number of valence electrons in the bond. B. Potential energy of the bond. C.partial charge of the bond D.bond distance​

Answers

Answer:

Answer is the number of the c

Heptane (C7H16) is a hydrocarbon fuel used for gas barbecues. Balance the chemical equation (given below) for the reaction that occurs when heptane burns in air. What are the coefficients in the balanced equation

Answers

Answer:

a = 1, b = 11, c = 7, d = 8

Explanation:

aC7H16 + bO2 ------> cCO2 + dH2O

1 C7H16 + 11 O2 ------> 7 CO2 + 8H2O

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g For a given arrangement of ions, the lattice energy increases as ionic radius ________ and as ionic charge ________.

Answers

Answer:

as the charge of the ions increases, the lattice energy increases. as the size of the ions increases, the lattice energy decreases.

For a given arrangement of ions, the lattice energy increases as ionic radius decreases and as ionic charge increases.

What is ion?

An atom or molecule is said to be an ion if one or more of whose valence electrons have been acquired or lost, providing it a net negative or positive electrical charge.

Faraday knew that metals disintegrated together into solution place at a single electrode and that a second metal was placed first from solution at the opposite electrode, as such matter had to be trying to move underneath the impact of an electrical current even though he was unable to identify the particles trying to move between the electrodes.  For a given arrangement of ions, the lattice energy increases as ionic radius decreases and as ionic charge increases.

Therefore, for a given arrangement of ions, the lattice energy increases as ionic radius decreases and as ionic charge increases.

To learn more about ion, here:

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what the type of solid materials are typically hard, have high melting pionts and poor electrical conductivities​

Answers

Answer:

Ionic solids

Explanation: Ionic solids—Made up of positive and negative ions and held together by electrostatic attractions. They're characterized by very high melting points and brittleness and are poor conductors in the solid state. An example of an ionic solid is table salt, NaCl.

Answer:

Ionic solids

Explanation:

Before a chemical reaction, the total mass of two reactants is measured to be 40 grams.
After the reaction, what should be the total mass of the products?
A. 0 grams
B. 20 grams
C. 40 grams
D. 80 grams

Answers

C.40g ...................

The total mass of the products is 40 grams (Option C).

In 1789, Antoine Lavoisier discovered that mass is neither created nor destroyed in chemical reactions. This is now known as Lavoisier's law of conservation of mass. In other terms, the sum of the masses of the reactants is equal to the sum of the masses of the products. So, in this case, the total mass of the products must be 40 grams as well.

The total mass of the products is 40 grams.

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A flask of ammonia is connected to a flask of an unknown acid HX by a 1.68 m glass tube (where "X" represents a halogen). As the two gases diffuse down the tube, a white ring of NH4X forms 115 cm from the ammonia flask. Identify element X (Name or symbol).

Answers

Answer:

Explanation:

white ring of NH₄X is formed . Here X is Cl and

NH₄X is NH₄Cl ( ammonium chloride )

The reaction is as follows

NH₃ + HCl = NH₄Cl ( white fume )

The acid that reacts with ammonia has been Hydrochloric acid (HCl), and the element X in the acid has been Chlorine (Cl).

The ammonia has been the gas with the pungent smell. It has been the compound with the dihybrid element used for the production of various nitrogen compounds.

The reaction of Ammonia with acid results in the formation of ammonium ions. The ions on reacting with the basic part of the acid, form the salt and give the product.

The white ring with the reaction of ammonia has been formed of the ammonium chloride. Thus the acid that reacts with ammonia has been Hydrochloric acid (HCl), and the element X in the acid has been Chlorine (Cl).

For more information about ammonia, refer to the link:

https://brainly.com/question/24015790

How to atoms share more than one pair of electrons?

Answers

Answer:

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

Explanation:

More than one pair of electrons can be shared between atoms to form double or triple covalent bonds. Unlike ionic bonds, covalent bonds are often formed between atoms where one of the atoms cannot easily attain a noble gas electron shell configuration through the loss or gain of one or two electrons.

From which type of clouds do hail pellets form?

Answers

Answer:

Hail pallets forms inside of cumulonimbus clouds

Explanation:

Answer: cumulonimbus hope it helps pls stay safe

How do you know about a substance if you know its temperature


A. How heavy the substance is

B. How large or small the particles of the substance are

C. How hot or cold the substance is

D. How many particles are in the substance

Answers

Answer:

How hot or cold the substance is

Explanation:

You can do a lot with just the temperature of a substance. Chemists can use this to identify the substance because of the temperature at which it melts. They can then find out how long it took to melt, which can also help.

Answer:c how hot or cold

Explanation:

What is the cathode in an electrochemical cell?​

Answers

Answer: The cathode is the electrode where reduction (gain of electrons) takes place (metal-B electrode)

Answer: The electrode where reduction occurs.

When an atom of oxygen forms an ion, what is the most likely charge for that ion?
a. -2
b. -8
C. +2
d. -6

Answers

Answer:

b option is the answer.

Answer:

-2

__________________________________________________________

How many electrons does Oxygen need:

We know that oxygen has an electric configuration of:

2 , 6     [8 electrons]

From the octet rule, we know that all elements try to get to the electronic configuration of the nearest noble gas

In the case of Oxygen, the nearest noble gas is Neon with the electronic configuration:

2 , 8     [10 electrons]

From the above, we can see that oxygen needs 2 more electrons in order to attain the nearest noble gas configuration

What will be the Charge on the ion?:

We know that electrons are negatively charged

Once oxygen gains 2 electrons to attain noble gas configuration, it will have 2 more electrons than it should have

So, the charge on the ion will be -2 since there are 2 extra electrons and both of the electrons contribute a negative charge

Hence, the charge is -2

1.1
A sample of oxygen occupies 47.2 L under a pressure of 1240 torr at 25 °C. What
volume would it occupy at 25 °C if the pressure were decreased to 730 torr?​

Answers

Answer:

80.2L

Explanation:

Given parameters:

Initial volume of oxygen = 47.2L

Initial pressure of oxygen = 1240torr

Final pressure  = 730torr

Unknown:

Final volume  = ?

Solution:

To solve this problem, we apply the Boyle's law proposed by Robert Boyle. It states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".

Mathematically;

             P₁V₁ = P₂V₂

P and V are pressure and volume

1 and 2 are initial and final states

              1240 x 47.2  = 730 x V₂  

                  V₂  = 80.2L

Draw the Lewis structure for the ClO3- ion on paper. How many valence electrons are found in the ion

Answers

Answer:

25 valence electrons.

Explanation:

Hello!

In this case, based on the attached picture, you can see that the chlorate ion has three oxygen atoms and one chlorine ion, whereas you can see there is a coordination bond (two arrows) from chlorine to oxygen which means that oxygen receives two electrons from chlorine in order to complete its octet and to allow chlorine to not exceed the octet. It means there is another oxygen completes its octet via the Cl=O bond and the the last oxygen is negatively charged because it is missing one bond to attain its octet even thought chlorine actually completes its octet.

Therefore, this ion has seven valence electrons from chlorine and 18 valence electrons from the three oxygen atoms, which means it has 25 valence electrons overall.

Best regards!

How many electrons are gained in the half-reaction 02 + electrons → 2029
A. 2
B. 1
C. 0
D. 4 ​

Answers

Answer:2

Explanation:

He

WILL GIVE BRAINLIEST!
Calculate the bond for CO2

Answers

Answer:

Bonding Order = number of bonding electrons – number of antibonding electrons/2.

So for CO2, there is a total of 16 electrons, 8 of which are antibonding electrons.

So 16 – 8 = 8; divided by 2 = 4. So, 4 is the bonding order of CO2. The molecular structure of CO2 looks like this:

..~-~~..

O=C=O

..~-~~..

Calculate the mass percent of 0.389 g of silicon (Si) that reacts with oxygen to form 0.832 g silicon dioxide (SiO 2 )

Answers

Answer:

Mass percent of silicon = 46.75% (Approx)

Explanation:

Given:

Mass of silicon = 0.389 g

Mass of silicon dioxide = 0.832 g

Find:

Mass percent of silicon

Computation:

Mass percent of silicon = Mass of silicon / Mass of silicon dioxide

Mass percent of silicon = [0.389 g / 0.832 g]100

Mass percent of silicon = 46.75% (Approx)

How many liters of volume is one mole of gas at standard temperature and
pressure?

Answers

22.7 liters

The molar volume of an ideal gas depends on the temperature and pressure. One mole of any ideal gas occupies 22.7 liters at 0 0C and 1 bar (STP).

Hope this helped

How many milliliters of an aqueous solution of 0.227 M sodium carbonate is needed to obtain 3.55 grams of the salt?

Answers

Answer:

147.6 mL .

Explanation:

sodium carbonate , Na₂CO₃

Molecular weight = 106

3.55 gm of sodium carbonate = 3.55 / 106

= .0335 moles

Let the volume of litre required = V

V litre of .227 M solution will contain

V x .227 moles of sodium carbonate . So

V x .227 = .0335

V = .1476 L

= 147.6 mL .

What is the mass number of this atom ?

Answers

i think its c also
sorry if it’s wrong

ANSWER ASAP PLEASE
Ball 1 has a mass of 10 g. Ball 2 has a mass of 30 g. Which prediction tells how
gravity will act on the balls when dropped?
O
A. The pull of gravity will be greater on ball 1.
B. The pull of gravity will be greater on ball 2.
C. The pull of gravity will be the same on each ball.
O
D. The pull of gravity will not act on either ball.

Answers

Answer:

c

Explanation:

i rememer this from 3rd grade

hellllpppppppp mee plzzzzzzzxzzzxzxzzzzzxx​

Answers

So for the first answer, I don’t know it but LISTEN UP!!!

There is a website called ptable. GO ONTO IT. If you click on element it tells you literally anything you want to know about it. There also separated into groups so you know which ones are mellatoids. good luck!

Determine the total number of electrons in the d orbitals of an atom of tin, Sn (Z = 50).

Answers

Answer:

Explanation:

Sn (Z = 50 )

Electronic configuration = [Kr] 4d¹⁰5s²5p²

= 1s²2s²p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p²

So , total number of electrons in d orbital = 10 + 10 = 20 .

Elements of the same subgroup have the same number of electrons on the outer layer. Am i right?​

Answers

Answer:

yes

Explanation:

because they have similar chemical properties

What is the charge of an atom that has 6 protons, 4
neutrons, and 6 electrons?

Answers

Answer:

neutral/no charge

Explanation:

Winds move in the same direction in both southern and northern hemispheres.

Select one:
True
False

Answers

False this is the answer

Answer:

your answer would be false.

Explanation:

prevailing winds blow east-west rather than north-south.

How does heat energy help change shape of metals?

Metals releases heat energy to be able to be shaped.
Heat energy provides more pressure that allows metals to bend.
Heat energy allows metal to become more malleable.
Metals require a lot of heat energy to be destroyed.

Answers

Answer: 3

Explanation:

It speed up the molecules to get them to bent and move instead of staying solid

Answer:

c

Explanation:

When enough heat energy is transferred to a metal, the molecules vibrate quickly enough so that the solid metal starts to change shape.

Cardinals are birds that do not migrate but spend the winter in New York State. Many people feed these birds sunflower seeds during the winter months. the starches present in the sunflower seeds help the cardinals to survive. Identify the building blocks of starches

Answers

Answer:

simple sugar

Explanation:

The northern cardinal is a bird of the Cardinalis genus. It s also called as the red bird. It is mostly found in Canada, United states and parts of Texas and Mexico. The Cardinal birds do not migrate in winter and spends the winter season in New York. These birds are fed with sunflower seeds by the people during the winter season. The starches in the seeds of the sunflower helps these birds to survive in the winter. The glucose or the simple sugar found in the starches are the building blocks of the starches.

If 30.0 g of H2SO4 reacts with sodium hydroxide, what mass of water is produced?

Answers

11.02g

Explanation:

mole ratio between H2SO4 and water is 1:2

mole of H2SO4 is 0.306

then the mole of water is 0.612

finally the mole of water is multiplied by 18, the molar mass to get 11.02 g of water

Is mass conserved when neutralisation takes place? That is, is the total mass of the acid and alkali equal to the total mass of
the products, salt and water?​

Answers

Answer:

Yes

Explanation:

yes, this is in every chemical reaction (except nuclear reaction) and Is known as "law of conservation of mass"

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