CHEMISTRY COLLEGE

A gas has a pressure of 1.00 atm and a volume of 500 mL. When its pressure is doubled, at constant temperature, to 2.00 atm, its volume halves to 250 mL, following Boyle's Law. However, when its pressure is increased 1000 times, at constant temperature, to 1000 atm, the volume decreases to 2 mL which is more than 1/1000 of 500 mL. What is the reason why Boyle's Law is not obeyed when the pressure is increased to 1000 atm?

Answers

Answer 1
Answer:

Answer: The reason why Boyle's is not obeyed is because the size of the gaseous molecules is more appreciable compared to the volume of the container containing the gas.

Explanation: At such high pressure of 1000atm , there will be high amount of gaseous molecules in terms of numbers and the volume of the gas will not be able to be decreased as if the gaseous molecules were dimensionless. The piston of the container containing the gas will not be able to pushed down much because the molecules will require an appreciable space.


Related Questions

MIDDLE SCHOOL

we know from Newton’s 2nd Law of Motion that the force on an object is equal to the mass of the object times the acceleration of that object. a 9kg bowling ball was thrown with a force of 5 N. what was its acceleration? Be sure to show how you solved the problem, not just the answer. show all of your work.

Answers

The acceleration of the ball was 0.6 m·s⁻².

F = ma

a = F/m = 5 N/9 kg × (1 kg·m·s⁻²/1 N) = 0.6 m·s⁻²

HIGH SCHOOL

Joseph Priestley discovered and described the chemical properties of oxygen. What type of chemist would he be considered today? A. biochemist B. inorganic chemist C. physical chemist D. organic chemist

Answers

The right answer is that Joseph Priestly would be considered an inorganic chemist, because oxygen is an element which is the object of study of inorganic chemistry. On the other hand, biochemists study the biomolecules (molecules involved in life); organic chemists study organic molecules (molecules with C, H and other elements); and physical chemistry is a complex field that study the matter based on chemical and physics concepts, it includes electrochemistry, thermodynamic, and quantum physics, among others.

Answer:

B

Explanation:

Just took the test.

MIDDLE SCHOOL

Select True or False: The specific heats of water and iron are 4.184 and 0.444 J/g°C, respectively. When equal masses of water and iron both absorb the same amount of heat, the temperature increase of the water will be 2.42 times greater than that of the iron.

Answers

Answer: false.


Explanation:


1) The increase of temperature is calcualte with the formula:


Q = M × C × ΔT.


2) In this case, you can write:


For water: Qw = Mw × Cw × ΔTw


For iron: Qi = Mi × Ci × ΔTi


3) Since the heat absorbed and the masses are equal, you get:


Qw = Qi ⇒ Cw×ΔTw = Ci×ΔTi, from where you can clear ΔTw


4) ΔTw = Ci×ΔTi / Cw


Replacing the values: ΔTw = 0.444 ΔTi / 4.18 ≈ 0.11 ΔTi.


5) Conclusion the temperature increase of water will be 0.11 times the increase of temperature of iron (this is smaller). So, the statement is false.



COLLEGE

Which of the following best describe the particles present in a 2.0 M aqueous solution of Al(NO3)3?2 M Al(NO3)3(aq)2 M Al3+(aq) and 6 M NO3-(aq)2 M Al3+(aq) and 3 M NO3-(aq)2 M Al3+(aq) and 18 M NO3-(aq)

Answers

Answer:

2,0 M of Al³⁺ and 6,0M of NO₃⁻.

Explanation:

In water, Al(NO₃)₃ dissociates as follows:

Al(NO₃)₃ → Al³⁺ + 3 NO₃⁻

That means in water, you will have 1 mole of Al³⁺ and 3 moles of NO₃⁻ per mole of Al(NO₃)₃.

Now, as the solution of Al(NO₃)₃ is 2,0M, you will have

2,0 M of Al³⁺ and 6,0M of NO₃⁻.

I hope it helps!

HIGH SCHOOL

Argon has a completely filled p sublevel, giving it chemical stability. Potassium has one electron in the 4s sublevel and can easily lose this electron, so it has a Argon has a completely filled p sublevel, giving it chemical stability. Potassium has one electron in the 4 s sublevel and can easily lose this electron, so it has a blank first ionization energy. Therefore, it blank the 4 s electron to achieve an blank electron configuration, giving it the added stability of the filled p sublevel. first ionization energy. Therefore, it Argon has a completely filled p sublevel, giving it chemical stability. Potassium has one electron in the 4 s sublevel and can easily lose this electron, so it has a blank first ionization energy. Therefore, it blank the 4 s electron to achieve an blank electron configuration, giving it the added stability of the filled p sublevel. the 4s electron to achieve an Argon has a completely filled p sublevel, giving it chemical stability. Potassium has one electron in the 4 s sublevel and can easily lose this electron, so it has a blank first ionization energy. Therefore, it blank the 4 s electron to achieve an blank electron configuration, giving it the added stability of the filled p sublevel. electron configuration, giving it the added stability of the filled p sublevel.

Answers

Potassium has one electron in the 4 s sublevel and can easily lose this electron, so it has a low first ionization energy.

Therefore, it lose the 4 s electron to achieve an Argon electron configuration, giving it the added stability of the filled p sublevel.

The ionization energy (Ei) is the minimum amount of energy required to remove the valence electron, when element lose electrons, oxidation number of element grows (oxidation process).

Potassium has lowe first ionization energy, so potassium easier remove one valence electron (4s¹).

Electron configuration of potassium is: ₁₉K 1s²2s²2p⁶3s²3p⁶4s¹.

Electron configuration of argon atom: ₁₈Ar 1s² 2s² 2p⁶ 3s² 3p⁶.

HIGH SCHOOL

Atomic number + number of neutrons equals

Answers

mass number because atomic number = number of protons and protons+neutrons=mass number
MIDDLE SCHOOL

Which part of the human ear is part of the inner ear? A)cochlea
B)oval window
C)ear canal
D)Hammer

Answers

Cochlea is present in inner ear !!

So go with A !!
if you need more info on that ; comment !!

Answer: cochlea


The cochlea is responsible for turning sound waves which is what makes you hear.

HIGH SCHOOL

Manganese reacts with hydrochloric acid to produce manganese(II) chloride and hydrogen gas. Mn(s)+2HCl(aq) ? MnCl2(aq)+H2(g) Part A When 0.650g Mn is combined with enough hydrochloric acid to make 100.0 mL of solution in a coffee-cup calorimeter, all of the Mn reacts, raising the temperature of the solution from 23.0?C to 28.2?C. Find ?Hrxn for the reaction as written. (Assume that the specific heat capacity of the solution is 4.18 J/g?C and the density is 1.00 g/mL.) Express your answer using three significant figures. ?Hrxn =____ kJ

Answers

Answer: The enthalpy change of the reaction for given amount of manganese is 181.2 kJ

Explanation:

To calculate mass of solution, we use the equation:

Density of solution = 1.00 g/mL

Volume of solution = 100.0 mL

Putting values in above equation, we get:

  • To calculate the heat absorbed, we use the equation:

where,

q = heat absorbed

m = mass of solution = 100 g

c = specific heat capacity of solution = 4.18 J/g.°C

= change in temperature =

Putting values in above equation, we get:

  • To calculate the number of moles, we use the equation:

Given mass of manganese = 0.650 g

Molar mass of manganese = 55 g/mol

Putting values in above equation, we get:

  • To calculate the enthalpy change of the reaction, we use the equation:

where,

= amount of heat absorbed = 2173.6 J = 2.174 kJ   (Conversion used:  1 kJ = 1000 J)

n = number of moles = 0.012 moles

= enthalpy change of the reaction

Putting values in above equation, we get:

Hence, the enthalpy change of the reaction for given amount of manganese is 181.2 kJ

MIDDLE SCHOOL

Why are the intermolecular attractions in H2O(g) much weaker than H2O(i) or H2O (s)

Answers

Answer:

The average distances between gaseous molecules are greatest of all phases

Explanation:

According to Coulomb's Law, the force between charges is inversely proportional to the square of a distance between two charges.

We know that solids are generally the most dense states (although ice is less dense than liquid water) in which the average distances between molecules are minimal. This is followed by liquids in which distances are greater than those in solids.

The distances between molecules in gaseous substances, on the other hand, are greatest, so that the attraction forces in gases are lowest according to Coulomb's Law.

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