CHEMISTRY HIGH SCHOOL

A student increases the temperature of a 200 cm3 balloon from 60⁰C to 180⁰C. What should the new volume of the balloon be? Use the formula: V2 = (V1 T2)/T1Question 3 options:

100 cm3


236 cm3


272 cm3


600 cm3

Answers

Answer 1
Answer:

According to Charle's law, the new volume of the balloon will be 600 cm³ if pressure is kept constant.

What is Charle's law?

Charles law is an experimental gas law which provides description about the behavior of gases which tend to expand on heating.It states that, at constant pressure, the temperature is in direct proportion with the volume that is,V∝T or V₁/T₁=V₂/T₂.The relation between volume and temperature is linear as the temperature increases volume also increases.

The graph of volume versus temperature is a straight line passing through the origin.The law was proposed by Jacques Charles in relation to ideal gases.

Substitution of the given values in the given formula, V₂= 200×180/60= 600 cm³.

Thus, the new volume of the balloon will be 600 cm³ if pressure is kept constant.

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Answer 2
Answer:

Let x represent the new volume:

(200)/(60) =(x)/(180)

cross multiply:

(36,000)/(60x)

then simplify to get 600cm^3

Hope this helps :)

Related Questions

Which statement best describes the effect of low ionization energies and low electronegativities on metallic bonding? a. The valence electrons are easily delocalized. b. The valence electrons stay in a single orbital. c. The valence electrons break free of the crystals. d. The valence electrons move closer to the nuclei.
According to one acid-base theory, a water molecule acts as an acid when the water molecule(1) accepts an H+ (3) donates an H+(2) accepts an OH– (4) donates an OH–
A neutral charge by an atom is caused by which of the following conditions? a. presence of neutrons in the nucleus b. balance in number of protons and neutrons c. balance in number of electrons and protons d. the balance of electrons in each electron shell
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Which best describes a chain reaction associated with a nuclear reaction? Neutrons released during a fusion reaction cause other nuclei to fuse. Neutrons released during a fission reaction cause other nuclei to split. Helium nuclei released during a fission reaction cause other nuclei to split. Helium nuclei released during a fusion reaction cause other nuclei to fuse.

Answers

The statement that describes a chain reaction brought about by a nuclear reaction is "neutrons released during a fission reaction cause other nuclei to split." This is applicable to fission reactions only wherein atoms split and produce neutrons that also cause further atoms to split, thus creating a chain or series of reactions.

Answer:

B

Explanation:

What is the change in temperature in a 128g sample of water if it absorbs 2808J of heat energy at a temperature of 2°C?

Answers

Given:

128g sample ofwater

2808J of heatenergy

Required:

Change intemperature

Solution:

This can be solvedthrough the equation H = mCpTwhere H is the heat, m is the mass, Cp is the specific heat and T is the change in temperature.

The specific heatof the water is 4.18 J/g-K

Plugging in thevalues into the equation

H = mCpT

2808J = (128g)(4.18 J/g-K) T

T= 5.25 K

Which quantity can vary among atoms of the same element?A) mass number
B) atomic number
C) number of protons
D) number of electrons

Answers

there is this thing called isotopes
it means that atoms of the same element can have a different number of neutrons.
if there is a change in the no. of neutrons, there will definitely be a change in the mass number.

so the answer is A) mass number

Final answer:

The quantity that can vary among atoms of the same element is the mass number, which represents the sum of the number of protons and neutrons in an atom.

Explanation:

The quantity that can vary among atoms of the same element is the mass number. The mass number represents the sum of the number of protons and neutrons in an atom. While the atomic number (which represents the number of protons) remains constant for atoms of the same element, the number of neutrons can vary, resulting in different mass numbers for atoms of the same element.

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Think about visiting the beach on a hot day. Predict whether sand or water has a higher specific heat and explain your prediction.

Answers

Answer:

The sand has a higher specific heat

Explanation:

The answer is that the sand would have a higher specific heat than water because water requires a lot of heat to raise its temperature while sand needs less heat to change it as water has a high heat capacity that allows it to maintain its temperature within a range.
water has a higher SHC as it would be cooler than the sand meaning it requires more energy to reach the same temperature 

Which force holds the nucleus of an atom together?A. Strong nuclear force
B. Weak nuclear force
C. Electrostatic force
D. Gravity

Answers

Answer:

Strong nuclear force

Write and balance this equation. Solid iron reacts with fluorine gas to produce crystalline iron(III) fluoride.

Answers

The balanced equation is: 2Fe + 3F2 ⇒ 2FeF3

How to balance an equation?

A chemical equation needs to be balanced if you want to make the wide variety of the atoms of the reactants equal to the variety of the atoms of the goods.

Given,

Iron + fluorine ⇒ Iron Flouride

Fe + F2 ⇒ FeF3

Now to balance this reaction:

2Fe + 3F2  ⇒ 2FeF3

This reaction is balanced.

What is iron fluoride used for?

This medicine is a mixture manufactured from nutrients, iron, and fluoride. it's miles utilized in infants and youngsters to deal with or prevent deficiency because of terrible weight loss programs or low tiers of fluoride in drinking water and other sources.

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Answer:

iron+flourine.............iron flouride

Fe+F2.............FeF3

the above reaction is not balanced

now to balance this reaction

2Fe+3F2...........2FeF3

now this reaction is balanced

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