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Natali5045456 [20]
3 years ago
7

A gas in a piston starts out with a volume of 156 mL, a temperature of 28.1oC, and a pressure of 1.12 atm. If it ends with a vol

ume of 312 mL and a temperature of 87.2oC, the new pressure will be?
Chemistry
1 answer:
Korolek [52]3 years ago
3 0

Answer:

idkhfj4 HD y

Explanation:

hwhx iij id enjoyably

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Genre of music?

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3 years ago
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An unknown gas with a formula of HX is contained in a 25.0 L tank at 1.2 atm and 25.0 oC. What is the chemical formula of the ga
ozzi

Answer:

HCl

Explanation:

Volume = 25L

Temperature = 25.0 oC + 273 = 298 K (Converting to kelvin units)

Pressure = 1.2 atm

Mass of gas = 44.7g

Formular of gas = HX

To solve this, we have to know the identity of X. One qay to do that is by obtaining the molecular mass of the compound.

To get the molar mass, we need the number of mole.

Using the ideal gas equation;

PV = nRT

where R = gas constant = 0.082 057 L atm K−1  mol−1

n = PV / RT

n = 1.2 * 25  / 0.082 057 * 298

n = 30  /  24.45

n = 1.227 mol

The relationship between number of moles and molar mass is given as;

Nummber f moles = mass  / molar mass

Molar mass = mass  / Number of moles

Molar mass = 44.7 / 1.227

Molar mass =  36.43 g/mol

Molar mass of gas X = Molar mass of H + Molar mass of X

36.43 = 1 + X

X = 36.43 - 1 = 35.43

Chlorine is the only element with molar mass approximate to 35.43

Hence X = Cl

The chemical formular = HCl

8 0
3 years ago
Can someone pls give me the answer to this question?
Svetllana [295]

Answer:

D

Explanation:

5 0
3 years ago
Which subatomic particles would be found orbiting around the nucleus?
LiRa [457]
An atom consists of three subatomic particles.

In the middle of atom it consists of nucleus which have two subatomic particles. They are protons and neutrons.

And there is a subatomic particle that is found orbiting around the nucleus in an atom, name of that subatomic particle is electron.

Hope this helps!
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3 years ago
Which is a FALSE statement about compounds?
rewona [7]

Answer:  D. Made of only one kind of atom

Explanation:A compound forms whenever two or more atoms form chemical bonds with each other.

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3 years ago
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