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alexira [117]
3 years ago
9

If a solution has virtually no hydrogen ions what type of ph does it have?

Chemistry
2 answers:
lora16 [44]3 years ago
7 0
D. It has almost no hydrogen ions, therefore it is very basic.
lesya [120]3 years ago
3 0
D. It has no hydrogen ions
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Dana is trying to determine if an unknown sample is a pure substance or not. The sample has a cloudy white color, and it seems e
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Answer:

Dana filtered the sample and larger granules of the sample were left behind.

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If a substance is pure, it will have a uniform composition throughout. It will not separate into particles of various sizes.

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3 years ago
At STP, fluorine is a gas and iodine is a solid. This observation can be explained by the fact that fluorine has
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6 0
3 years ago
Read 2 more answers
A. Based on the activation energies and frequency factors, rank the following reactions from fastest to slowest reaction rate, a
deff fn [24]

Answer:

A) E_{a} = 350KJ/mol, E_{a} = 50KJ/mol, E_{a} = 50KJ/mol

     A = 1.5×10^{-7}s^{-1}, A = 1.9×10^{-7} s^{-1}, A=1.5×10^{-7} s^{-1}

B) 4.469

Explanation:

From Arrhenius equation

      K=Ae^{\frac{E_{a} }{RT} }

where; K = Rate of constant

            A = Pre exponetial factor

            E_{a} = Activation Energy

             R = Universal constant

             T = Temperature in Kelvin

Given parameters:

E_{a} =165KJ/mol

T_{1}=505K

T_{2}=525K

R=8.314JK^{-1}mol^{-1}

taking logarithm on both sides of the equation we have;

InK=InA-\frac{E_{a} }{RT}

since we have the rate of two different temperature the equation can be derived as:

In(\frac{K_{2} }{K_{1} } )=\frac{E_{a} }{R}(\frac{1}{T_{1} } -\frac{1}{T_{2} } )

In(\frac{K_{2} }{K_{1} } )=\frac{165000J/mol}{8.314JK^{-1}mol^{-1}  }.(\frac{1}{505} -\frac{1}{525} )

In(\frac{K_{2} }{K_{1} } )= 19846.04×7.544×10^{-5} = 1.497

\frac{K_{2} }{K_{1} } =e^{1.497} = 4.469

 

6 0
3 years ago
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