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2 years ago

1. When frequency increases energy:

1 answer:

8 0

B

When frequency increases, as does the energy, but wavelength decreases. It also works vise versa; if wavelength were to increase, its frequency and energy will decrease.

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Classify each as either a solid a liquid or a gas at room temperature

LenKa [72]

Answer:

air gas

diamond solid

copper solid

candle wax solid or melted would be liquid

Explanation:

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2 years ago

In the past mining companies were not made responsible for the clean-up of any of

Oxana [17]

I think the answer is a but I am not for sure

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3 years ago

A mixture of krypton and argon gas is expanded from a volume of 88.0L to a volume of 100.0L, while the pressure is held constant

Firlakuza [10]

Answer:

-3.28 × 10⁴ J

Explanation:

Step 1: Given data

Pressure exerted (P): 27.0 atm

Initial volume (Vi): 88.0 L

Final volume (Vf): 100.0 L

Step 2: Calculate the work (w) done by the gaseous mixture

We will use the following expression.

w = -P × ΔV = -P × (Vf - Vi)

w = -27.0 atm × (100.0 L - 88.0 L)

w = -324 atm.L

Step 3: Convert w to Joule (SI unit)

We will use the conversion factor 1 atm.L = 101.325 J.

-324 atm.L × 101.325 J/1 atm.L = -3.28 × 10⁴ J

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3 years ago

Why does Hess's law allow you to determine the enthalpy change of a<br> reaction?

lana [24]

Enthalpy is a state function

Explanation:

The Hess's law allows us to determine the enthalpy change of a reaction because enthalpy is a state function. It does not depend on the individual path take in going from reactants to products in the reaction.

Enthalpy changes are the heat changes accompanying physical and chemical changes.
It is the difference between the heat content of product in the final state and the reactants.
Enthalpy changes for some reactions are not easily measurable experimentally.
To calculate such heat changes, we apply the Hess's law of heat summation.
The law states that "the heat change of a reaction is the same whether it occurs in a step or several steps".
The Hess's law is simply based on the first law of thermodynamics by which we know that energy is conserved in every system.

learn more:

Hess's law brainly.com/question/11293201

#learnwithBrainly

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3 years ago

HELP ME THIS IS 1 MONTH OVER DUE PLS HURRY

AVprozaik [17]

1false
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2 years ago

Read 2 more answers