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Margarita [4]
4 years ago
7

tell how a voltaic cell works. be sure to mention the various parts of the voltaic cell and what they have to do with how it wor

ks
Chemistry
1 answer:
Lelu [443]4 years ago
4 0
Voltaic cells are  used as a source of electrical power. By their nature, they produce direct current<span>. 
</span>A voltaic cell, or galvanic cell<span> is an </span>electrochemical cell that uses a chemical reaction to produce electrical energy. The cell consists of two metals: one called anode where oxidation (loss of electrons) occurs and the other cathode where reduction (gain of electrons) occurs.The salt bridge connect the anode with the cathode. It is the <span>chamber of electrolytes necessary to complete the circuit in a voltaic cell.
</span><span>The external circuit is used to conduct the flow of electrons between the electrodes of the voltaic cell and  includes a load.</span>
<span>The key to gathering the electron flow is to separate the oxidation and reduction half-reactions, connecting them by a wire, so that the electrons must flow through that wire.</span>
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3 years ago
How many moles of helium are 8.84×1024 atoms of He?
insens350 [35]

Answer:

14.68 moles of He

Explanation:

To do this, just remember Avogadro's Constant or Avogadro's number. This constant tells us how many units ( in this case atoms) there are in a mole of ANY type of substance.

Avogadro's constant is 6.022140857 × 10²³ units per mole.

Now that we know how many atoms there are in 1 mole, we can use this as our conversion factor.

8.84 x 10²⁴ atoms of He →  moles of He

8.84\times10^{24} atoms of He\times\dfrac{1moleofHe}{6.022140857\times10^{23}atomsofHe}=14.68molesofHe

So the answer would be:

14.68 moles of He

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