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Alex777 [14]
3 years ago
9

What is the minimum efficiency of a functioning current-model catalytic converter? a. 60% b. 75% c. 80% d. 90%

Engineering
1 answer:
slamgirl [31]3 years ago
7 0

Answer:

d. 90%

Explanation:

As we know that internal combustion engine produce lot's of toxic gases to reduce these toxic gases in the environment a device is used and this device is know as current modeling converter.

Generally the efficiency of current model catalytic converter is more than 90%.But the minimum efficiency this converter is 90%.

So option d is correct.

d. 90%

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What’s the number of gold atoms in a nanogram? a picogram?
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Answer :

The number of gold atoms in nanogram is, 3.057\times 10^{12}

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As we know that the molar mass of gold is, 196.97 g/mole. That means, 1 mole of gold has 196.97 grams of mass of gold.

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First we have to determine the number of gold atoms in a nanogram.

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And, 1 grams of gold contains \frac{1g}{196.97g}\times (6.022\times 10^{23}) number of gold atoms

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The number of gold atoms in nanogram is, 3.057\times 10^{12}

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Hello, how are you? ​
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Hello, I'm good. Thank you for asking

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