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patriot [66]
3 years ago
5

a balloon has 0.3 moles of air inside and a volume of 7 liters after 0.2 more moles of air were blown into this balloon what is

the volume
Chemistry
1 answer:
Nikitich [7]3 years ago
7 0

Answer:

11.67L

Explanation:

From the ideal gas equation

PV = nRT

If all the variables ( i.e P and T) are kept constant, then the volume is directly proportional to n as shown below

V = nRT/P

RT/P ==> constant

V1/n1 = V2/n2

Data obtained from the question include:

n1 = 0.3mol

V1 = 7L

n2 = 0.3 + 0.2 = 0.5mol

V2=?

V1/n1 = V2/n2

7 /0.3 = V2 /0.5

Cross multiply to express in linear form

V2 x 0.3 = 7 x 0.5

Divide both side by 0.3

V2 = ( 7 x 0.5) /0.3

V2 = 11.67L

The new volume is 11.67L

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Sever21 [200]

Answer:

D. An acid accepts an electron pair from a base.

Explanation:

acorroding to lewis

  • an acid is a compound which accepts a pair of electrons from base .

  • a base is a compound which donates a pair of electron to acid .
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The reaction PCl3(g)+Cl2(g)???PCl5(g)
goldfiish [28.3K]

Answer:

Just study the thing don't expect others to just answer the homework for you

Explanation:

If you truly are a good student then you should have asked your teacher in person or through email instead of asking on here. Not trying to be mean but you also have to understand that people on here have a life. :)

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A sample of nitrogen gas is at a temperature of 50 c and a pressure of 2 atm. If the volume of the sample remains constant and t
Lilit [14]

Answer:

The new temperature of the nitrogen gas is 516.8 K or 243.8 C.

Explanation:

Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.

Gay-Lussac's law can be expressed mathematically as follows:

\frac{P}{T} =k

Where P = pressure, T = temperature, K = Constant

You want to study two different states, an initial state and a final state. You have a gas that is at a pressure P1 and at a temperature T1 at the beginning of the experiment. By varying the temperature to a new value T2, then the pressure will change to P2, and the following will be fulfilled:

\frac{P1}{T1} =\frac{P2}{T2}

In this case:

  • P1= 2 atm
  • T1= 50 C= 323 K (being 0 C= 273 K)
  • P2= 3.2 atm
  • T2= ?

Replacing:

\frac{2 atm}{323 K} =\frac{3.2 atm}{T2}

Solving:

T2*\frac{2 atm}{323 K} =3.2 atm

T2=3.2 atm*\frac{323 K}{2 atm}

T2= 516.8 K= 243.8 C

<u><em>The new temperature of the nitrogen gas is 516.8 K or 243.8 C.</em></u>

5 0
3 years ago
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Andrei [34K]

Answer: Magnesium Mg

Explanation:

Oxidization is the process by which a substance either gains oxygen or losses electrons.

The chemical reaction of the above is denoted by,

Mg(s) + 2HCl(aq) -----> MgCl2(aq) + H2(g)

Mg went from a 0 to a +2 state which would mean that it lost electrons.

It was therefore oxidized.

Please do react or comment if you need clarification or if the answer helped you. This can help other users as well. Thank you.

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loris [4]

Answer:

any atom that contains six protons is the element carbon and has the atomic number 6, regardless of how many neutrons or electrons it may have.

Explanation:

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