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3 years ago

What is the formula for calculating the pH of a solution

1 answer:

4 0

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = - log [H3O+].

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4 years ago

Predict what would happen to the strength of the electromagnet in each situation. using a battery with a higher voltage: wrappin

aalyn [17]

The the strength of an electromagnet varies with the quantity and direction of current as well as the number of turns in the coil.

<h3>What as is an electromagnet?</h3>

An electromagnet is a material which operates by the principle of electromagnetism.

Electromagnets possesses both electrical and magnetic properties.

The strength of an electromagnet is affected by the current, the number of turns as well as the material of the electromagnet.

The strength of the given electromagnet will be affected thus:

increases when using a battery with a higher voltage
decreases when wrapping the wire around the nail only three times
is unchanged when changing the direction of the current by reversing the battery connections
decreases when using a plastic stick in place of the iron nail
is greatest when holding the nail vertically rather than horizontally.

Therefore, the strength of an electromagnet is affected by current and number of turns in the coil.

Learn more about electromagnets at: brainly.com/question/12555869

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2 years ago

(3.88 x 10to the 26th)atoms of copper would be equal to how many moles of copper?

marissa [1.9K]

Answer:

Explanation:

hey u said what I said didusbevehdysg

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3 years ago

In the process of fossil formation, what materials replace the

Dahasolnce [82]

C. soil. If this isn’t C it’s definitely B.

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3 years ago

Read 2 more answers

What is the standard potential, e∘celle∘cell, for this galvanic cell? use the given standard reduction potentials in your calcul

Olin [163]

The standard potential for the given galvanic cell is 0.477 V

<h3>What is electrode potential?</h3>

The electrode potential is the electromotive force of a galvanic cell built using a standard reference electrode and another electrode whose potential is to be found.

There are two types of electrode potential

Oxidation potential - The potential associated with oxidation reaction is known as oxidation potential

Reduction potential - The potential associated with reduction reaction is known as reduction potential

At the anode, oxidation occurs

$Sn(s)\rightarrow Sn^{2+}(aq)+2e^-$

At the cathode, reduction occurs

$Cu^{2+}(aq)+2e^-\rightarrow Cu(s)$

$E^o_{cell} =E^o_{cathode} -E^o_{anode}$

= 0.337 - (-0.140)

= 0.477 V

Thus, The standard potential for the given galvanic cell is 0.477 V

Learn more about electrode potential:

brainly.com/question/17362810

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Disclaimer: The question was given incomplete on the portal. Here is the complete question

Question: What is the standard potential, E∘cell, for this galvanic cell? Use the given standard reduction potentials in your calculation as appropriate.

$Sn^{2+}(aq)+2e^-\rightarrow Sn(s)$ , E°red=−0.140 V

$Cu^{2+}(aq)+2e^-\rightarrow Cu(s)$ , E°red=+0.337 V

4 0

2 years ago

Read 2 more answers