When the pressure that a gasexerts on a sealed container
changes from 53.0 atm to 35.2
atm, the temperature changes
from
°C to 12.0°C.

Please help I will give brainliest

Answers

Answer 1

Answer:

Answer:

To determine the relationship between pressure and temperature in this scenario, we can use the ideal gas law.

The ideal gas law states that PV = nRT, where P represents pressure, V represents volume, n represents the number of moles of gas, R is the ideal gas constant, and T represents temperature in Kelvin.

Since we only have the initial and final pressures and temperatures, we can compare them using the ideal gas law equation by setting up the following ratio:

(P₁T₁) / (P₂T₂) = (V₁n₁R) / (V₂n₂R)

Since the volume, number of moles, and gas constant remain constant, we can simplify the equation:

(P₁T₁) / (P₂T₂) = 1

Now, we can substitute the given values into the equation:

(53.0 atm * T₁) / (35.2 atm * 12.0°C) = 1

To solve for T₁, we need to convert 12.0°C to Kelvin by adding 273.15:

(53.0 atm * T₁) / (35.2 atm * (12.0 + 273.15) K) = 1

Simplifying the equation further:

(53.0 atm * T₁) / (35.2 atm * 285.15 K) = 1

Now, we can solve for T₁:

(53.0 atm * T₁) = (35.2 atm) * (285.15 K)

Dividing both sides of the equation by 53.0 atm:

T₁ = (35.2 atm * 285.15 K) / 53.0 atm

Calculating the numerical value:

T₁ ≈ 189.5 K

Therefore, when the pressure changes from 53.0 atm to 35.2 atm, the temperature changes from approximately 12.0°C to 189.5 K.

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Burning alcohol for fuel is a very efficient process. Please select the best answer from the choices provideda. True
b. False

Answers

Explanation:

Burning of alcohol produces different products as it depends on the type and nature of alcohol which is being burnt.

Some alcohols upon burning produce toxic gases or products whereas some alcohols on burning does not produce any toxic substances.

For example, when ethanol is burnt then it reacts with oxygen and results in the formation of water and carbon dioxide.

Thus, we can conclude that the statement burning alcohol for fuel is a very efficient process is a false statement.

Burning alcohol for fuel has been used throughout history. There are some alcohols that are the best ones to use as fuels because of their nature and can be synthesized chemicaly or biologicaly. Except, some of those alcohol also has a bad effect when burned for fuel as it would cause serious negative chemical effects when exposed to the human body such as blindness or death. Therefore, the best answer would be False.

A sealed container has 1 mole of helium and 2 moles of nitrogen at 30DC when the total pressure of mixture is 0.60 atm what is the partial pressure of the nitrogen?

Answers

Answer:

The partial pressure of nitrogen is 0.402 atm.

Explanation:

Given data:

Number of moles of helium = 1 mol

Number of moles of nitrogen = 2 mol

Total pressure of mixture = 0.60 atm

Partial pressure of nitrogen = ?

Solution:

First of all we will calculate the mole fraction of nitrogen.

mole fraction of nitrogen = moles of nitrogen / total number of moles

mole fraction of nitrogen = 2 mol / 3 mol = 0.67

Partial pressure of nitrogen:

P₁ = [ n₁ /n(t)] × Pt

P₁ = 0.67 × 0.60 atm

P₁ = 0.402 atm

Final answer:

To find the partial pressure of nitrogen in a mixture, calculate the mole fraction of nitrogen and multiply it by the total pressure of the mixture. In this case, the partial pressure of nitrogen is 0.40 atm.

Explanation:

The question is about determining the partial pressure of nitrogen in a mixture of helium and nitrogen based on Dalton's Law of Partial Pressures. First, we find the mole fraction of nitrogen, which is the ratio of moles of nitrogen to the total moles in the mixture. In this scenario, the mole fraction (XN2) is 2 moles of nitrogen divided by the total moles (1 mole of helium + 2 moles of nitrogen), which equals 2/3.

Then we use Dalton's Law, which states that the partial pressure of nitrogen (PN2) can be found by multiplying the mole fraction by the total pressure of the mixture. Therefore, the partial pressure of nitrogen is 0.60 atm (total pressure) multiplied by 2/3 (mole fraction of nitrogen), yielding a partial pressure for nitrogen of 0.40 atm.

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Which of the following solids has the highest melting point?(1) H2O(s) (3) SO2(s)(2) Na2O(s) (4) CO2(s)

Answers

The answer is (2) Na2O. Considering these compounds status under room temperature. H2O is liquid. CO2 and SO2 are gas. Na2O is solid. So the Na2O has the highest melting point.

The solid having the highest melting point is Na₂O and the correct option is option 2.

The melting point of a solid is a measure of the temperature at which it changes from a solid to a liquid state. It is influenced by the strength of the intermolecular forces between the particles in the solid.

Na₂O(s), which is sodium oxide, has the highest melting point among the given options. This is because Na₂O is an ionic compound composed of positively charged sodium ions (Na⁺) and negatively charged oxide ions (O²⁻). Ionic compounds have strong electrostatic forces of attraction between the ions, known as ionic bonds. These bonds require a significant amount of energy to break, resulting in a high melting point.

H₂O(s) (water ice) has a lower melting point because it is a molecular compound held together by weaker hydrogen bonds.

SO₂(s) (sulfur dioxide) and CO₂(s) (carbon dioxide) are molecular compounds with weaker intermolecular forces, such as London dispersion forces, resulting in lower melting points compared to ionic compounds.

Thus, the ideal selection is option 2.

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8. Conclusions Why is it helpful to know how much carbon monoxide (CO) was produced, even though silicon is the product being collected for industrial use?

Answers

It is helpful to know how much carbon monoxide (CO) was produced because it signifies incomplete combustion therefore can represent inefficiency of the process and also carbon monoxide is an air pollutant it is very important to control the emission of this gas.

Which statement describes an alternate theory of acids and bases?(1) Acids and bases are both H+ acceptors.
(2) Acids and bases are both H+ donors.
(3) Acids are H+ acceptors, and bases are H+ donors.
(4) Acids are H+ donors, and bases are H+ acceptors.

Answers

Answer: Option (4) is the correct answer.

Explanation:

According to Bronsted and Lowry, acids are the species which can donate hydrogen or $H^(+)$ ions.

Whereas bases are the species which can accept hydrogen or $H^(+)$ ions.

Thus, we can conclude that the statement acids are $H^(+)$ donors, and bases are $H^(+)$ acceptors describes an alternate theory of acids and bases.

The answer is (4) Acids are H+ donors, and bases are H+ acceptors. This constitutes the Bronsted-Lowry theory of acids and bases.

Based on the information from the movie, what can youConclude about the common chemical compound on
earth?
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It's carbon dioxide
D
It's water