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3 years ago

How do liquid water, ice, and water vapor differ from each other?

Chemistry

2 answers:

guajiro [1.7K]3 years ago

7 0

It has to be 2 because they are all forms of water

Gnesinka [82]3 years ago

5 0

2, because they are all a form of water.. but just in different states of matter depending on their form

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Ugo [173]

Answer:

Explanation:

The number of representatives depends on the population size. A state with fewer residents will have less representatives than a state with more residents.

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3 years ago

How do you name these compounds?

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1) is right
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3 years ago

Determine the molality of a solution of benzene dissolved in toluene (methylbenzene) for which the mole fraction of benzene is 0

kogti [31]

Answer:

2.32 m

Explanation:

So, according to definition of mole fraction:

$Mole\ fraction\ of\ benzene=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}$

Mole fraction = 0.176

Applying values as:

$0.176=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}$

$0.176\times ({n_{benzene}+n_{toluene}})={n_{benzene}}$

So,

$0.176\times n_{toluene}}=0.824\times {n_{benzene}}$

${n_{benzene}}=\frac {0.176}{0.824}\times n_{toluene}}$

${n_{benzene}}=0.2136\times n_{toluene}}$

Also, Molar mass of toluene = 92.14 g/mol

Thus,

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

$Mass=92.14\times n_{toluene}}\ g$

Also, 1 g = 0.001 kg

So,

$Mass\ of\ toluene=0.09214\times n_{toluene}}\ kg$

Molality is defined as the moles of the solute present in 1 kg of the solvent.

It is represented by 'm'.

Thus,

$Molality\ (m)=\frac {0.2136\times n_{toluene}}{0.09214\times n_{toluene}}$

<u>Molality of benzene = 2.32 m</u>

3 0

3 years ago

Which statement best describes the polarity of CH3Cl? a) The molecule is always polar. b) The molecule is always nonpolar. c) De

Solnce55 [7]

Answer:

a) The molecule is always polar.

Explanation:

The molecule is always polar because of two reasons:

all the bonds are polar due to the difference in electronegativity between carbon and hydrogen & carbon and chlorine.

AND IMPORTANTLY

The molecule is asymmetrical meaning that the dipoles cannot cancel each other out (like they do in methane or carbon dioxide for example) so the net effect is a polar molecule.

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3 years ago

How much heat does it take to move 45 g of ice at -25°C to water at 31°C?

ss7ja [257]

I am only in 6th grade i dont know this

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2 years ago