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Tatiana [17]
3 years ago
7

Silver is the metal with the highest conductivity, followed by copper, gold and aluminium. Why do you think copper and aluminium

are used for electrical wire and cable rather than silver and gold?
Chemistry
1 answer:
Olegator [25]3 years ago
3 0

Explanation:

Copper and aluminum are used for electric wires and cables because they are readily available and cheaper to produce.

The abundance of copper and aluminum is higher compared to silver and gold.

This makes the metals easier to mine than silver and gold. It would be impossible to use the scare amount of gold and silver to make electric wires and cables.

This use cannot be sustained.

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In an acid-base titration, a student uses 21.35 mL of 0.150 M NaOH to neutralize 25.00 mL of H2SO4. How many moles of acid are i
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Answer: There are 0.006 moles of acid in the flask.

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Given: V_{1} = 21.35 mL,        M_{1} = 0.150 M

V_{2} = 25.0 mL,           M_{2} = ?

Formula used to calculate molarity of H_{2}SO_{4} is as follows.

M_{1}V_{1} = M_{2}V_{2}

Substitute the values into above formula as follows.

M_{1}V_{1} = M_{2}V_{2}\\0.15 M \times 21.35 mL = M_{2} \times 25.0 mL\\M_{2} = 0.1281 M

As molarity is the number of moles of a substance present in a liter of solution.

Total volume of solution = V_{1} + V_{2}

= 21.35 mL + 25.0 mL

= 46.36 mL  (1 mL = 0.001 L)

= 0.04636 L

Therefore, moles of acid required are calculated as follows.

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