A gas syringe contains 56.05 milliliters of a gas at 315.1 K. Determine the volume that the gas will occupy if the temperature is increased to 380.5 K.

Answers

Answer 1

Answer:

The new volume of the gas if the temperature is increased to the given value is 67.68 milliliters.

What is Charles's law?

Charles's law states that "the volume occupied by a definite quantity of gas is directly proportional to its absolute temperature.

It is expressed as;

V₁/T₁ = V₂/T₂

Given the data in the question;

Initial temperature of gas T₁ = 315.1K

Initial volume of gas V₁ = 56.05mL = 0.05605L

Final temperature T₂ = 380.5K

Final volume V₂ = ?

V₁/T₁ = V₂/T₂

V₂ = V₁T₂ / T₁

V₂ = ( 0.05605L × 380.5K ) / 315.1K

V₂ = 21.327025LK / 315.1K

V₂ = 0.06768L

V₂ = 67.68 mL

The new volume of the gas if the temperature is increased to the given value is 67.68 milliliters.

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Answer 2

Answer:

Answer:

Given: V1 = 56.05mL T1= 315.1K T2= 380.5K

Unknown: V2=?

Formula: V2=V1T2/T1

Solution: V2= 56.05mL x 380.5K/315.1K

Answer: V2=67.68mL

Explanation:

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What is the ratio of Al ions to S ions in a neutral compound?

Answers

Aluminum ions are usually +3 while sulfide ions are usually -2 which means that a neutral compound of aluminum sulfide would be Al₂S₃. 3×2=6 while -2×3=-6 and 6+-6=0.

I hope this helps. Let me know if anything is unclear.

Calculate the decrease in temperature when 2.00 L at 20.0 °C is compressed to 1.00 L.

Answers

We assume that this substance is in an ideal state. Then, we can use the ideal gas equation which is expressed as: PV = nRT. Comparing the first and second conditions of the substance, we can say that the number of moles and the pressure remains the same. We can solve the problem as follows:

P1V1 = n1RT1
P2V2 = n2RT2

Since P and n are the same for the conditions, we can combine the equations.

T1/V1 = T2/V2
20.0/2 = T2/1
T2 = 10.0 °C

How many molecules in a mole?

Answers

Answer:

One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant.

Explanation:

hope this helped!

Disorder in the universe increases because A. spontaneous changes produce more order in a system.
B. work produces disorder in a system.
C. work produces waste heat, which leaves a system.
D. all of the above

Answers

The correct answer would be the letter C.
A is obviously not right since it says "more order". B is incorrect because work is obligatory to make an order. If A and B are wrong, then D must be wrong. You're left with C, which is the only true statement here.

Explanation:In thermodynamics, a parameter representing the state of disorder of a system at the atomic, ionic, or molecular level; the larger the disorder the upper the entropy. A live of disorder within the universe or of the inconvenience of the energy during a system to try to work.

The correct answer would be letter C. A is obviously not right, since it says "more order". B is incorrect because work is obligatory to make order. If A and B are wrong, then D must be wrong. You're left with C, which is the only true statement here.

The chemical properties of an element are largely determined by itsa. number of energy levels.
b. period number.
c. number of protons.
d. number of valence electrons.

Answers

The chemical properties of an element are largely determined by the number of valence electrons. Thus option D is correct.

what are valence electron ?

Valence electrons an atom is defined as the number of electron which lose or gain the nearest noble gas or inert gas electronic configuration.

The valence electrons are the main part of chemical reactions as these contain more energy as compared to the electrons present in inner orbits.

The number of valence electrons present helps to determine the chemical properties of element like valence or valency, bonds with other elements.

It also show a picture of the mechanism of bond formation of an atom, the number of unpaired electrons and how many atoms can take part.

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The chemical properties of an element are largely determined by its number of valence electrons. The answer is letter D. The rest of the choices do not answer the question above.

When fossil fuels are burned, _____ is released into the atmosphere.A. oxygen
B. nitrogen
C. ammonia
D. carbon dioxide

Answers

Carbon dioxide. This is because when fossil fuels are burned, oxygen combines with carbon to form CO2 and with hydrogen to form water (H2O). These reactions release heat that we use for energy. For example, for the same amount of energy produced, burning natural gas produces about half of the amount of CO2 produced by burning coal.

Final answer:

The burning of fossil fuels primarily releases carbon dioxide into the atmosphere, contributing to greenhouse gas emissions and global warming.

Explanation:

When fossil fuels are burned, carbon dioxide (CO₂) is predominantly released into the atmosphere. Fossil fuels, such as coal, oil, and natural gas, are composed mainly of carbon. During combustion, this carbon combines with oxygen in the air to form carbon dioxide. This process is a significant source of greenhouse gases, contributing heavily to global warming. It's important to note that other substances like water vapor and minor amounts of sulfur oxides can also be produced in this reaction, but the main product is carbon dioxide.

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