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3 years ago

Which of the following is NOT a property of an acid?

1 answer:

7 0

The answer here is D - bases tend to feel slippery. This is because they tend to dissolve oils on your skin, reducing the friction between your fingers or hands when you rub them together.

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In a step-down transformer, which side has more wire loops?

Marat540 [252]

B. The Secondary side of the step down transformer.

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3 years ago

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PLEASE HELP ME I BEG YOU

slamgirl [31]

1) Only if new observations led to a change in our current knowledge.

2) <span>place their own moral views about the needs of society

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4) FALSE

5) FALSE(i think)

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4 years ago

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Balanced Equation: Zn + 2HCI - ZnCl2 + H2

lawyer [7]

Answer:

my friend: why is there no pretty girl who swims?

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3 years ago

Changing the position of the increases or decreases your effort

MA_775_DIABLO [31]

Changing what position?

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3 years ago

Find the pH of a 0.100 molar H2C6O6 solution with ka, where KA is equal 8.0×10–5

lubasha [3.4K]

The pH of the solution is 2.54.

Explanation:

pH is the measure of acidity of the solution and Ka is the dissociation constant. Dissociation constant is the measure of concentration of hydrogen ion donated to the solution.

The solution of C₆H₂O₆ will get dissociated as C₆HO₆ and H+ ions. So the molar concentration of 0.1 M is present at the initial stage. Lets consider that the concentration of hydrogen ion released as x and the same amount of the base ion will also be released.

So the dissociation constant Kₐ can be written as the ratio of concentration of products to the concentration of reactants. As the concentration of reactants is given as 0.1 M and the concentration of products is considered as x for both hydrogen and base ion. Then the

$K_{a}=\frac{[H^{+}][HB] }{[reactant]}$

[HB] is the concentration of base.

$8 * 10^{-5} =\frac{x^{2} }{0.1}\\\\\\x^{2} = 8 * 10^{-5}*0.1$

$x^{2} = 0.08 * 10^{-4}\\ \\x = 0.283*10^{-2}$

Then

$pH = - log [x] = - log [ 0.283 * 10^{-2}]\\ \\pH = 2 + 0.548 = 2.54$

So the pH of the solution is 2.54.

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3 years ago