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General

General

Easy

Question

10 mL of 1 mM surfactant solution forms a monolayer covering 0.24 cm² on a polar substrate. If the polar head is approximated as a cube, what is its edge length?

2.0 nm
0.1 nm
2.0 pm
1.0 pm

The correct answer is: 2.0 pm

$table attributes columnalign left columnspacing 1em rowspacing 4 pt end attributes row cell text Moles end text equals fraction numerator m v subscript m l end subscript over denominator 1000 end fraction equals fraction numerator 10 to the power of negative 3 end exponent cross times 10 over denominator 1000 end fraction equals 10 to the power of negative 5 end exponent text mole end text end cell row cell 10 to the power of negative 5 end exponent N subscript A text molecules covering area end text equals 0.24 cm squared end cell row cell 1 straight N subscript straight A text molecules covering area end text equals fraction numerator 0.24 over denominator 10 to the power of negative 5 end exponent straight N subscript straight A end fraction cm squared end cell row cell fraction numerator 0.24 over denominator 10 to the power of negative 5 end exponent cross times 6 cross times 10 to the power of 23 end fraction equals straight a squared end cell row cell straight a squared equals 4 cross times 10 to the power of negative 20 end exponent cm squared end cell row cell straight a equals 2 cross times 10 to the power of negative 10 end exponent cm end cell row cell straight a equals 2 cross times 10 to the power of negative 12 end exponent straight m end cell row cell straight a equals 2 pm end cell end table$

Related Questions to study

$T h e space v a l u e space o f space cos squared invisible function application 10 to the power of ring operator minus cos invisible function application 10 to the power of ring operator cos invisible function application 50 to the power of ring operator plus cos squared invisible function application 50 to the power of ring operator text is end text$

$T h e space v a l u e space o f space cos squared invisible function application 10 to the power of ring operator minus cos invisible function application 10 to the power of ring operator cos invisible function application 50 to the power of ring operator plus cos squared invisible function application 50 to the power of ring operator text is end text$

MathematicsGeneral

Explain how you can use your graphing calculator to show that the rational expressions $fraction numerator negative 6 x squared plus 21 x over denominator 3 x end fraction$ and
$negative 2 x plus 7$ are equivalent under a given domain. What is true about the graph
at x = 0and Why?

Explain how you can use your graphing calculator to show that the rational expressions $fraction numerator negative 6 x squared plus 21 x over denominator 3 x end fraction$ and
$negative 2 x plus 7$ are equivalent under a given domain. What is true about the graph
at x = 0and Why?

Direction : Identify the root word’s meaning in Greek or Latin for the following word:
Autograph, Biography.

Direction : Identify the root word’s meaning in Greek or Latin for the following word:
Autograph, Biography.

parallel

Direction : Identify the root word’s meaning in Greek or Latin for the following word:
Folio, Foliage

Direction : Identify the root word’s meaning in Greek or Latin for the following word:
Folio, Foliage

Direction : Complete the following sentences by choosing suitable words:
The ____________ had a small birthday party celebration.

Direction : Complete the following sentences by choosing suitable words:
The ____________ had a small birthday party celebration.

Caroline loves reading history.
Which word is the gerund in the above sentence?

Caroline loves reading history.
Which word is the gerund in the above sentence?

parallel

Direction : Fill in the blank with correct letter.
J _ _ p

Direction : Fill in the blank with correct letter.
J _ _ p

The sclerenchyma is composed of:

The sclerenchyma is composed of:

parallel

State the correct answer in the given below

State the correct answer in the given below

Find the missing number in this pattern.
275, 375, ____, 575, 675, 775.

Find the missing number in this pattern.
275, 375, ____, 575, 675, 775.

Determine 465% of 3000.

Determine 465% of 3000.

parallel

A sports company was ordered to manufacture football of 199% of the previous order. If previously 200 balls were ordered, then _________ should be manufactured now.

A sports company was ordered to manufacture football of 199% of the previous order. If previously 200 balls were ordered, then _________ should be manufactured now.

A person pays 0.28% of his income as tax. If he earns $56000, then determine the tax paid by him.

A person pays 0.28% of his income as tax. If he earns $56000, then determine the tax paid by him.

A person pays 0.28% of his income as tax. If he earns $56000, then determine the tax paid by him.

A person pays 0.28% of his income as tax. If he earns $56000, then determine the tax paid by him.

parallel

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