A 25.5 liter balloon holding 3.5 moles of carbon dioxide leaks. If we are able to determine that 1.9 moles of carbon dioxide escaped before the container could be sealed, what is the new volume of the container?

Answers

Answer 1
Answer:

Answer: The new volume of the container is 13.8 L

Explanation:

To calculate the new volume of the system, we use the equation given by Avogadro's Law. This law states that volume of the gas is directly proportional to the number of moles of the gas at constant pressure.

Mathematically,

(V_1)/(n_1)=(V_2)/(n_2)

where,

V_1\text{ and }n_1 are the initial volume and moles of the gas.

V_2\text{ and }n_2 are the final volume and moles of the gas.

We are given:

V_1=25.5L\nn_1=3.5\nV_2=?\nn_2=1.9

Putting values in above equation, we get:

(25.5)/(3.5)=(V_2)/(1.9)\n\nV_2=13.8L

Thus the new volume of the container is 13.8 L


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What is the atomic number, icon, mass of potassium?

This should be EASY!

Answers

Answer:

19, K, 39.098

Explanation:

Potassium is a chemical element with symbol K and atomic number 19.

Atomic Mass: 39.098u

The major argument of opponents of the 1919Treaty of Versailles was that the treaty would
require the United States to
(1) become involved in future international
conflicts
(2) pay for war damages
(3) adopt a policy of military alliances
(4) keep troops permanently in Europe

Answers

The Treaty of Versailles would require the United States to become involved in future international conflicts.

  • The Treaty of Versailles was signed to end World War I in 1919.
  • The treaty also became a peace treaty presented by the Allied (France, Britain and the United States).
  • The opponents of the Treaty of Versailles, like, Germany oppose America involvement in Europe.
  • They believed that America, being disconnected geographically by the ocean, has no right to interfere.
  • When the United States had entered the war, the Germans protested.

Therefore we can conclude that Germans oppose America involvement in future international conflicts.

Thus option 1. is the correct answer.

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the answer is one i did this like a month ago

Elements on the periodic are arranged into groups and periods and ordered according to: a. atomic number b. number of proteins c. reactivity d. all of the above

Answers

Final answer:

Elements on the periodic table are arranged into groups and periods, and are ordered according to atomic number, not the number of proteins or based solely on reactivity. Each element's place is determined by the number of protons in its nucleus, which also typically equals the number of electrons. Elements in the same group, or column, share similar chemical properties.

Explanation:

The elements on the periodic table are indeed arranged into groups and periods, but they are ordered in line with their atomic number. This atomic number reflects the number of protons in an element's nucleus and also typically matches the number of electrons surrounding the nucleus. Elements in the same vertical column, known as a group, share similar chemical properties.

Each box on the periodic table represents an element, and contains its atomic number, symbol, average atomic mass and (sometimes) name. The elements are arranged in seven horizontal rows, known as periods or series, and 18 vertical columns, called groups. The properties of the elements are periodic functions of their atomic numbers, hence the arrangements.

The reactivity of elements does have a role to play in the periodic table, as element groups possess similar chemical behaviors due to the similar configurations of their outermost electron shell. However, this reactivity does not determine the ordering of elements on the periodic table as the atomic number does. The numbering of proteins error seems to be a typographical mistake as proteins aren't a determinant in the configuration of the periodic table.

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A saturated solution of NaNO3 is prepared at 60.°C using 100. grams of water. As this solution is cooled to 10.°C, NaNO3 precipitates (settles)out of the solution. The resulting solution is saturated. Approximately how many grams of NaNO3 settled out of the original solution?
(1) 46 g (3) 85 g
(2) 61 g (4) 126 g

Answers

The answer is 46 g


The explanation :


According to the attached curve of the relation between the temperature and the grams in solutions:


-we can see from the curve that the grams of NaNO3 at 60°C = 126 g


-and the grams of NaNO3 at 10°C = 80 g


-so, To get the grams of NaNO3 settled out of the original solution, we will subtract the grams of NaNO3 at 10°C - the grams of NaNO3 at 60°C


126 g - 80 g = 46 g


∴ the correct answer is 46 g

The answer is (1) 46g. This is related to the solubility curve of the NaNO3. The solubility of NaNO3 under 60 ℃ is 126 g. And the solubility under 10 ℃ is 80 g. So the NaNO3 precipitates is 126-80=46 g.

A liquid is placed in an evacuated, sealed flask. When will this closed system reach dynamic equilibrium?

Answers

The liquid that is placed in an evacuated sealed flask will reach in dynamic equilibrium if the amount of liquid inside the flask will stop converting into vapor. This process is to balanced the amount of substance of both phases inside the flask. 

What is the source of fuel that is most widely used today?a. Coal
b. Crude oil
c. Natural gas
d. Nuclear energy

Answers

The source of fuel that is most widely used today is Natural gas. The answer is letter C. The rest of the choices do not answer the question above,