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pantera1 [17]
3 years ago
9

Which of the following colors of light has the highest energy?

Chemistry
2 answers:
qaws [65]3 years ago
5 0
I believe the answer is red, they have the longest wavelength, and energy.
Hope this helps 
devlian [24]3 years ago
5 0
Violet has the highest energy (aka frequency) of all visible light. It is just below ultraviolet (UV) which is invisible.
Frequency is indirectly proportional to wavelength, so higher the energy lowest the wavelength.
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3 years ago
A piston contains 5.00 L of gas at a pressure of 101 kPa. The piston is compressed until the gas occupies 2.00 L of space. What
galben [10]

Answer: 252.5 kPa

Explanation:

Given that:

initial volume of gas V1 = 5.00 L

initial pressure of gas P1 = 101 kPa.

new Volume V2 = 2.00 L

new pressure P2 = ?

Since, only pressure and volume are involved, apply the formula for Boyle's law

P1V1 = P2V2

101 kPa x 5.0L = P2 x 2.00L

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Consider the reaction at 25 °C. H2O(l) ↔ H2O(g) ΔG° = 8.6 kJ/mol Calculate the pressure of water at 25 °C (Hint: Get K eq)
tangare [24]

Answer:

\boxed{\text{23.4 mmHg}}

Explanation:

H₂O(ℓ) ⟶ H₂O(g)

K_{\text{p}} = p_{\text{H2O}}

\text{The relationship between $\Delta G^{\circ}$ and $K_{\text{ p}}$ is}\\\Delta G^{\circ} = -RT \ln K_{\text{p}}

Data:  

T = 25 °C

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\begin{array}{rcl}8600 & = & -8.314 \times 298.15 \ln K \\8600 & = & -2478.8 \ln K\\-3.47 & = & \ln K\\K&=&e^{-3.47}\\& = & 0.0311\end{array}

Standard pressure is 1 bar.

p_{\text{H2O}} = \text{0.0311 bar} \times \dfrac{\text{750.1 mmHg}}{\text{1 bar}} = \textbf{23.4 mmHg}\\\\\text{The vapour pressure of water at $25 ^{\circ}\text{C}$ is $\boxed{\textbf{23.4 mmHg}}$}

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Potassium ions, sodium ions, and calcium ions?

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