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klemol [59]
3 years ago
7

Which sentence describes one characteristic of nonmetals? Nonmetals are often brittle solids. Nonmetals are often malleable. Non

metals often conduct electricity. Nonmetals are often ductile.
Chemistry
1 answer:
cricket20 [7]3 years ago
6 0

Answer:

Non metals are brittle solids.

Explanation:

The option A is correct,

Non metals are brittle solids.

It is the property of non metals. They can not be stretched into thin wire if stress is applied non metals brake down.

All other options are incorrect because,

B = Non metals are often malleable

It is the property of metals. Metals can be malleable into think sheets.

C = Non metals often conduct electricity.

It is the property of metals. Metals conduct electricity because of availability of free electrons.

D =  Non metals are often ductile.

It is the property of metals. They can stretched into thin wire.

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Answer:

k = [F2]² [PO]² / [P2] [F2O]²

Explanation:

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A student sees an absorbance a=1.140 for his solution that has a concentration of c=1.50*10-4 m using 0.50 cm cuvette. what is t
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The molar extinction coefficient is 15,200 M^{-1} cm^{-1}.

The formula to be used to calculate molar extinction coefficient is -

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The given values are in required units, hence, there is no need to convert them. Directly keeping the values in formula to find the value of molar extinction coefficient.

Rewriting the formula as per molar extinction coefficient -

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Performing multiplication in denominator to find the value of molar extinction coefficient

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Performing division to find the value of molar extinction coefficient

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Hence, the molar extinction coefficient is  15,200 M^{-1} cm^{-1}.

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