What is the voltage this voltmeter is measuring? Be sure your answer has a reasonable number of decimal place

Chemistry

1 answer:

Mnenie [13.5K]3 years ago

8 0

Hi! I would say the voltage can be measured at 0.083 volts

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True or False When the attraction between the particles overcomes their motion the particles clump together to boil.

bixtya [17]

Answer:

False

Explanation:

It is wrong to claim that when the attraction between particles overcomes their motion, the particles will clump together to boil.

During boiling particles do no clump together, they tend to move apart more rapidly.

Boiling occurs when the vapor pressure overcomes the ambient atmospheric pressure.
The hotter part of the boiler close the heat source moves rapidly away because they have become less dense.
The colder and denser part sinks and this interaction sets up a convection cell.

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3 years ago

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Komok [63]

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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

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