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Fynjy0 [20]
3 years ago
7

A 1.0 M H2S solution has a pH = 3.75 at equilibrium. What is the value of Ka?

Chemistry
2 answers:
MrRa [10]3 years ago
7 0
The answer is 3.16*10-8
Lelechka [254]3 years ago
6 0
The answer is A, for help I watched some khan academy vids, they're very helpful
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4 years ago
A sample of oxygen gas has a volume of 150.0 ml when its pressure is 0.947 atm. what will the volume of the gas be at a pressure
earnstyle [38]
Boyle's law gives the relationship between pressure and volume of gas. It states that for a fixed amount of gas at constant temperature, pressure is inversely proportional to volume of gas. 
PV = k
where P - pressure, V - volume and k - constant 
P1V1 = P2V2 
where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation.
substituting the values in the equation
0.947 atm x 150.0 mL = 0.987 atm x V
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5 0
3 years ago
A 581.2 mL sample of carbon dioxide was heated to 347 K.
svetlana [45]

Answer:

The temperature at 581.2 mL volume was 242.8 K.

Explanation:

Using Charle's law  

\frac {V_1}{T_1}=\frac {V_2}{T_2}

Given ,  

V₁ = 581.2 mL

V₂ = 830.5 mL

T₁ = ?

T₂ = 347 K

Using above equation as:

\frac {581.2\ mL}{T_1}=\frac {830.5\ mL}{347\ K}

T_1=\frac{581.2\times 347}{830.5}\ K=242.8\ K

<u>The temperature at 581.2 mL volume was 242.8 K.</u>

3 0
4 years ago
Which of the following are properties of substances with matter? (2 points)
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The answer is A. Hope this helps
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4 years ago
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