Which of the following statements is true about an endergonic reaction? ∆G is positive ∆G is negative ∆S is negative

Answers

Answer 1

Answer: The answer is the first option, ∆G is positive. Endergonic reaction is a chemical reaction where the Gibbs free of energy is positive and there is abosrption of energy. It is a nonspontaneous reaction or unfavorable reaction.

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A rapid and continuous series of nuclear reactions is called a chain reaction. true or false?

Answers

I think the answer is false. A chain reaction is not strictly for nuclear reactions only. It can be to other types of chemical reaction. As long as, it follows the three main steps which are initiation, propagation and termination.

The energy carried by light waves is taken in by particles of matter.What type of wave interaction does this statement describe?
A
absorption
В.
reflected
C.
refraction
O D.
scattering

Answers

Answer:

B absorption

Explanation:

because absorption is the transfer of energy carried by light waves to particles of matter

B the wave must be reflected

Which of the following nonmetals forms a gas commonly found in our atmosphere? Rn,Cl,I,or N

Answers

N, our atmosphere is about 80% nitrogen(N) and about 20% oxygen(O)

Nitrogen (N) our atmosphere is 80% N

A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 k. what will be the gas pressure when the temperature changes to 450 k? a gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 k. what will be the gas pressure when the temperature changes to 450 k? 1.5 atm 0.47 atm 0.94 atm 2.1 atm 1.1 atm

Answers

Using Gay-Lussac's Law, we have
P2 = $((T2)X(P1))/(T1)$
where, P and T stands for pressure and temperature respectively, terms 1 and 2 indicates initial and final pressure/temperature respectively.

Given that, P1 = 1.5 atm, T1 = 320 K, T2 = 450 K,
∴P2 = $((450)X(1.5))/(320)$ = 2.1 atm

Final answer:

Using Gay-Lussac's Law, we calculate that when the temperature of a gas increases from 320 K to 450 K, the pressure of the gas will increase from 1.5 atm to 2.1 atm, assuming the volume and the amount of gas remain constant.

Explanation:

To answer the question, we need to use the concept in physics called Gay-Lussac's Law. This law states that the pressure of a given amount of gas held at a constant volume is directly proportional to the Kelvin temperature. It's also important to remember that when we're dealing with gases, temperatures have to be in Kelvin for our calculations to work.

Given that, we know that the initial pressure (P1) is 1.5 atm, the initial temperature (T1) is 320K, and the final temperature (T2) is 450K. We want to find the final pressure (P2). According to Gay-Lussac's law, this can be calculated using the following equation: P1/T1 = P2/T2.

Thus, P2 = P1 * T2 / T1 = 1.5 atm * 450K / 320K = 2.1 atm.

So, the gas pressure will be 2.1 atm when the temperature increases from 320 K to 450 K, assuming that the volume and the amount of gas remain constant.

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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

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:

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:

This is the metric unit for measuring volume

Answers

Cubic metre is the metric unit for measuring volume. The cubic centimetre has a particular nomenclature called a millilitre.

The 3-dimensional space that is occupied by matter or surrounded by a surface is measured in volume, which is expressed in cubic units. A derived unit called the cubic metre serves as the SI unit of volume.

A unique designation for the cubic decimeter is the litre. To reduce the chance of confusion between the lowercase letter "ell" (l) and the number one (1), the symbol for the litre is an uppercase letter "ell". The litre cannot be represented by the script letter l (l).

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