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Dafna11 [192]
3 years ago
8

Question seven. Please HELP!

Chemistry
1 answer:
diamong [38]3 years ago
4 0
The correct answer is silicates
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slamgirl [31]
Compound
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3 years ago
The solubility of nitrogen gas at 25 degrees C and 1 atm is 6.8 x 10^(-4) mol/L. If the partial pressure of nitrogen gas in air
Zolol [24]

Answer:

5.2 x 10⁻⁴ M.

Explanation:

  • The relationship between gas pressure and the  concentration of dissolved gas is given by  Henry’s law:

<em>P = kC</em>

where P is the partial pressure of the gaseous  solute above the solution.

k is a constant (Henry’s constant).

C is the concentration of the dissolved gas.

  • At two different pressures, there is two different concentrations of dissolved gases and is expressed in a relation as:

<em>P₁C₂ = P₂C₁,</em>

P₁ = 1.0 atm, C₁ = 6.8 x 10⁻⁴ mol/L.

P₂ = 0.76 atm, C₂ = ??? mol/L.

<em>∴ C₂ = (P₂C₁)/P₁ =</em> (0.76 atm)(6.8 x 10⁻⁴ mol/L)/(1.0 atm) = <em>5.168 x 10⁻⁴ mol/L ≅ 5.2 x 10⁻⁴ M.</em>

5 0
2 years ago
According to the data, the temperature of the
Vadim26 [7]

Answer: 351

Explanation: From °C to kelvin we do

K=273+°C

From Kelvin to °C we do

°C=K-273 or -273+ K

7 0
3 years ago
What motion causes thermal energy?
OLga [1]
Thermal energy causes of motion of

1. mixing water molecules contained in a beaker.

2.<span>molecules in soild liquid and gas phases 

3. mixing </span><span>molecules together 

4. </span><span>molecules that have reached equilibrium </span>
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Define the term macromolecule
makkiz [27]

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a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

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2 years ago
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