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Olin [163]
3 years ago
10

How is an electrolytic cell different from a voltaic cell?

Chemistry
1 answer:
andrey2020 [161]3 years ago
8 0
Voltaic cells = spontaneous reaction 
<span>Electrolytic cells = non-spontaneous so it requires energy for the reaction to get going.</span>
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I am a teacher in a college in a large city in China. One day, some students asked me to join
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A local plant nursery uses large sprinklers to water the plants twice a day. the water contains phosphorus, which is a fertilize
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3 0
1 year ago
Explain why lithium is a strong reducing agent, whereas fluorine is a strong oxidizing agent.
Tom [10]
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3 0
3 years ago
Determine the molality of a solution of methanol dissolved in ethanol for which the mole fraction of methanol is 0.135. Give you
Alja [10]

<u>Answer:</u> The molality of the solution is 0.11 m

<u>Explanation:</u>

We are given:

Mole fraction of methanol = 0.135

This means that 0.135 moles of methanol is present in 1 mole of a solution

Moles of ethanol = 1 - 0.135 = 0.865 moles

To calculate the mass for given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of ethanol = 0.865 moles

Molar mass of ethanol = 46 g/mol

0.865mol=\frac{\text{Mass of ethanol}}{46g/mol}\\\\\text{Mass of ethanol}=(0.865mol\times 46g/mol}=39.79g

To calculate the molality of solution, we use the equation:

Molality=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}

Where,

m_{solute} = Given mass of solute (methanol) = 0.135 g

M_{solute} = Molar mass of solute (methanol) = 32 g/mol

W_{solvent} = Mass of solvent (ethanol) = 39.79 g

Putting values in above equation, we get:

\text{Molality of methanol}=\frac{0.135\times 1000}{32\times 39.79}\\\\\text{Molality of methanol}=0.106m\approx 0.11m

Hence, the molality of the solution is 0.11 m

6 0
4 years ago
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