Chemistry : asked on tiffnywee
 26.09.2020

Question 3.

What is an ideal gas.

When 17.75 g of Cl2 gas filled into a 3-L closed container at 27 °C, the internal pressure of the container increased to 1.6 atm. Determine whether Cl2 gas behaves as an ideal gas at this condition. State the conditions whaen a gas deviates from an ideal behaviour. Explain your answer.

 

Question 4.

The decomposition of KClO3 is commonly used to prepare small amounts of O2 in the laboratory. Oxygen gas generated in an experiment is collected at 25 °C in a bottle inverted in a breaker of water. The external laboratory pressure is 762 torr. When the water level in the originally full bottle has fallen to the level in the breaker, the volume of collected gas is 1750 mL. What is the mass of oxygen gas have been collected?

[vapour pressure of water at 25 °C = 23.8 torr]

 

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12.11.2022, solved by verified expert
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Answer:

80 gm, it is not an ideal gas. 2.22 gm oxygen will form

Step-by-step explanation:

Question 3. What is an ideal gas. When 17.75, №15250777, 26.09.2020 09:39

On applying PV = nRT , mass found to be 80 gm . Mass= 2×0.0821×400/ .821= 80gm , 

  As Cl2 does not obey PV= nRT so it is not an ideal gas . It is due to attractive forces and finite size of molecules. On applying PV= nRT , mass of O2= (762-23.8/760)× 1.75×32/0.0821×298= 2.22 gm O2 will form.

Question 3. What is an ideal gas. When 17.75, №15250777, 26.09.2020 09:39Question 3. What is an ideal gas. When 17.75, №15250777, 26.09.2020 09:39
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Chemistry
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Answer:

Ideal to rela gas

Step-by-step explanation:

gas behaves more like an ideal gas at higher temperature and lower pressure, as the potential energy due to intermolecular forces becomes less significant compared with the particle's kinetic energy, and the size of the molecules becomes less significant.

Here, the pressure increases it means there is the interaction between the molecules and if interaction is there means they are not behave like ideal gas.

Any gas deviates from its ideal behaviour at loe temp and high pressure. In this condition the volume of the particles is not negligible as compared to the volume of the gas 

. also the intermolecular force starts acting upon the molecules. Hence gas doesn't  behave ideally.

Chemistry
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P Answered by Master
Answer: 0.0045 mol
Explanation: Convert 30 ml to l: 30 mL = 0.03 L
Molarity = mol/l
mol = molarity * L
mol = 0.15 * 0.03 = 0.0045 mol
Answer: 0.0045 mol
Explanation: Convert 30 ml to l: 30 mL = 0.03 L
Molarity = mol/l
mol = molarit
Chemistry
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P Answered by PhD
Answer: chalcogens.
Explanation: Strontium is an alkaline earth metal, it always exhibits a degree of oxidation in its compounds +2.
Chalcogens are a group of 6 chemical elements (oxygen O, sulfur S, selenium se, tellurium te, polonium Po) that have an oxidation state of -2 => Chalcogens will combine with strontium in a ratio of 1:1.
Chemistry
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Answer: b. Fiona is correct because the diagram shows two individual simple machines.

Explanation:
A mechanical device using which we can change the direction or magnitude of force applied is known as simple machine.
For example, in the given diagram there are two individual simple machines.
The machine helps in changing the direction or magnitude of force applied by the man. As a result, it becomes easy for him to carry different things easily from one place to another.
Thus, we can conclude that the statement Fiona is correct because the diagram shows two individual simple machines, is correct.
Answer: b. Fiona is correct because the diagram shows two individual simple machines.

Explanation
Chemistry
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P Answered by PhD

Answer:

52.6 gram

Step-by-step explanation:

It is clear by the equation 2(27+3×35.5)= 267 gm of AlCl3 reacts with 6× 80 = 480 gm of Br2 . So 29.2 gm reacts = 480× 29.2/267= 52.6 gm

Chemistry
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Calcium (Ca)(On the periodic table, ionization energy increases as you go up and to the right of the periodic table)

Calcium (Ca)(On the periodic table, ionization energy increases as you go up and to the right of the
Chemistry
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P Answered by PhD

glycoproteins

Explanation:

A positive reaction for Molisch's test is given by almost all carbohydrates (exceptions include tetroses & trioses). It can be noted that even some glycoproteins and nucleic acids give positive results for this test (since they tend to undergo hydrolysis when exposed to strong mineral acids and form monosaccharides).

Chemistry
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Answer:

Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N2 gas at 328K and 0.884 atm is 26.07 L.

An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P×V = n×R×T

where P is the gas pressure, V is the volume that occupies, T is its temperature, R is the ideal gas constant, and n is the number of moles of the gas. The universal constant of ideal gases R has the same value for all gaseous substances.

Explanation:

In this case, you know:

P= 0.884 atm

V= ?

n= Answer:Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N 0.857 moles (where 28 g/mole is the molar mass of N₂, that is, the amount of mass that the substance contains in one mole.)

R=0.082Answer:Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N

T= 328 K

Replacing in the ideal gas law:

0.884 atm×V= 0.857 moles× 0.082Answer:Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N ×328 K

Solving:

Answer:Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N

V= 26.07 L

The volume of a container that contains 24.0 grams of N2 gas at 328K and 0.884 atm is 26.07 L.

Chemistry
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15 moles.Explanation:Hello,In this case, the undergoing chemical reaction is:Clearly, since carbon and oxygen are in a 1:1 molar ratio, 15 moles of carbon will completely react with 15 moles of oxygen, therefore 15 moles of oxygen remain as leftovers. In such a way, since carbon and carbon dioxide are also in a 1:1 molar ratio, the theoretical yield of carbon dioxide is 15 moles based on the stoichiometry:Best regards.
Chemistry
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P Answered by PhD
Answer: 25 g
Explanation: Given:
Original amount (N₀) = 100 g
Number of half-lives (n) = 11460/5730 = 2
Amount remaining (N) = ?
N = 1/2ⁿ × N₀
N = 1/2^2 × 100
N = 0.25 × 100
N = 25 g

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