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-Dominant- [34]
3 years ago
6

Consider an ideal gas at 30 ∘C and 1.02 atm pressure. To get some idea how close these molecules are to each other, on the avera

ge, imagine them to be uniformly spaced, with each molecule at the center of a small cube.
Chemistry
2 answers:
Nastasia [14]3 years ago
8 0

Answer: They are close to each other by 41.03 m^3

Explanation:

From Ideal gas equation, PV = nRT

Where n is negligible

R is gas constant = 8.314 J/mol.k

T = 30 + 273 = 303K

P = 1.02 * 103351.5 = 103351.5 Pascal

Then;

PV = RT

V = P/RT

V = 103351.5/(8.314*303)

V = 41.03m^3

BlackZzzverrR [31]3 years ago
4 0

Answer:

See explanation below

Explanation:

This question is incomplete, however, I answered this question on another website, so, I will assume that you need the same answer, cause is the same exercise. If it's not, then please say what's your real question in this exercise.

First of all, you need to know that 1 mole of an ideal gas always occupies 22.4 L. Therefore, using the ideal gas equation, we can solve for the volume that the gas at 1.02 atm occupies, and this will be:

(1 atm x 22.4 L /273 K) x (303 K /1.02 atm ) L = 24.37 L

Converting liter to m³:

24.37 / 1000 = 0.02437 m³

We also know by avogadros number, that 1 mole has  6.02 x 10^23 molecules, and if 1 mole at 1.02 atm has the volume above, then:

0.02437/6.02x10^23 m^3 = 4.05x10^-26 m³

With this result, we can know the length of an edge of the small cube, and we also know that the volume of a cube is a³. We have the volume that the gas occupies, so, we can solve for the length:

l = ∛4x10^-26 m³ = 3.43x10^-9 m

With this, we can compare the distance with the diameter of  a molecule which is 10^-10 m so:

distance = 3.43x10^-9 / 10^-10 = 34.33

This means that is 34 times the diameter of a molecule.    

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Nutka1998 [239]
Answer : YES, The precipitation reaction will occur.

Explanation : When we mix the aqueous solutions of Lead chloride and Ammonium sulfide a reaction will occur which is stated below :

PbCl_{2} +(NH_{4}) _{2} S ----\ \textgreater \  PbS + 2[ (NH_{4})Cl]

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3 years ago
An element has a mass of 39.2 and an atomic number of 19. How many protons does this element have? How many neutrons? How many e
abruzzese [7]

Answer:

19 protons, 19 electrons, and 3 neutrons

Explanation:

the atomic number is 19 so the protons are the same, 19, and the electrons are the same as the proton, because protons are positive and electrons are negative so they have to balance out and the neutrons ➗ mass number by the atomic number.

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3 years ago
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An aqueous solution of 10.03 g of catalase, an enzyme found in the liver, has a volume of 1.05 L at 27°C. The solution's osmotic
-Dominant- [34]

Answer : The molar mass of catalase is, 2.40\times 10^5g/mol

Explanation :

Formula used :

\pi =CRT\\\\\pi=\frac{w}{M\times V}RT

where,

\pi = osmotic pressure  = 0.745 torr = 0.000980 atm   (1 atm = 760 torr)

C = concentration

R = solution constant  = 0.0821 L.atm/mol.K

T = temperature  = 27^oC=273+27=300K

w = mass of catalase = 10.03 g

M = molar mass of catalase = ?

V = volume of solution  = 1.05 L

Now put all the given values in the above formula, we get:

0.000980atm=\frac{10.03g}{M\times 1.05L}\times (0.0821L.atm/mole.K)\times (300K)

M=2.40\times 10^5g/mol

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7 0
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The image represents the reaction between a certain number of molecules of N2 and H2
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Two angles with measures (6x + 60) (90)<br> are supplementary. What is the value of x?
fredd [130]
Supplementary angles add up to 180, so
6x+60+90 = 180 and solve for x
6x= 30
x=5
5 0
3 years ago
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