3 years ago

This gas is found in the stratosphere where it helps protect us from UV radiation.

Chemistry

1 answer:

Luba_88 [7]3 years ago

3 0

Answer: A

Explanation:

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The activation energy for a reaction is the energy difference between what two components of a reaction?

lora16 [44]

Answer:

Activation Energy is the Energy that Must be Overcome/reached by Reactants for Products to be formed.

I'd go with the 2nd Option.

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3 years ago

A thermometer reads a pressure of 120 kPa at 0 ˚C. What is the temperature when the thermometer reads a pressure of 80 kPa? (Cel

Mariulka [41]

Answer:

T₂ = 182 K

Explanation:

Given that,

Initial pressure, P₁ = 120 kPa

Initial temperature, T₁ = 0˚C = 273 K

We need to find the final temperature when the pressure is 80 kPa.

We know that, Gay Lussac's Formula is :

$\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}\\\\T_2=\dfrac{P_2T_1}{P_1}\\\\T_2=\dfrac{80\ kPa\times 273}{120\ kPa}\\\\T_2=182\ K$

So, the new temperature is equal to 182 K.

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3 years ago

1) H, + NH, < -> H +<br> NH4+

Goshia [24]

If this is balancing them its 4H+1NH —> 1H+NH4

8 0

3 years ago

The solubility of nitrogen gas at 25°C and a nitrogen pressure of 522 mmHg is 4.7 × 10 –4 mol/L. What is the value of the Henry'

Anestetic [448]

Answer:

6.8 × 10⁻⁴ mol/L.atm

Explanation:

Step 1: Given data

Solubility of nitrogen gas at 25°C (S): 4.7 × 10⁻⁴ mol/L

Partial pressure of nitrogen gas (P): 522 mmHg

Step 2: Convert the partial pressure of nitrogen to atm

We will use the relationship 1 atm = 760 mmHg.

$522mmHg \times \frac{1atm}{760mmHg} = 0.687atm$

Step 3: Calculate the value of the Henry's Law constant (k)

We will use Henry's law.

$S = k \times P\\k = \frac{S}{P} = \frac{4.7 \times 10^{-4}mol/L }{0.687atm} = 6.8 \times 10^{-4} mol/L.atm$

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4 years ago

During what change of state do atoms or molecules become more ordered

Dennis_Churaev [7]

Condensation because the water vapor has a high entropy(disorder) and liquid water has a lower entropy.

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3 years ago