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3 years ago

Which is not a consequence of hydrogen bonding between water molecules?

1 answer:

8 0

Hydrogen bonds are hard to break, so there is a high boiling point and specific heat. The hydrogen bonds have to break before water boils.
<span>Hydrogen bonds create a crystal lattice structure when water freezes, and that takes up more room, which lowers the desnitsy of ice :)

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This is usually used for school work but, I'm using it for something different. You see, I like this dude that I met over playst

shusha [124]

Answer:

The best way to admit you like him would be to act normal. Don't be someone your not and just admit to him that you like him. Yolu could do it while ya'll are talking but don't just suddenly spring it on him. If he is a true friend, your friendship will remain even if he doesn't like you back.

Explanation:

8 0

3 years ago

The standard cell potential (E°cell) for the reaction below is +0.63 V. The cell potential for this reaction is ________ V when

tia_tia [17]

Answer : The cell potential for this reaction is 0.50 V

Explanation :

The given cell reactions is:

$Pb^{2+}(aq)+Zn(s)\rightarrow Zn^{2+}(aq)+Pb(s)$

The half-cell reactions are:

Oxidation half reaction (anode): $Zn\rightarrow Zn^{2+}+2e^-$

Reduction half reaction (cathode): $Pb^{2+}+2e^-\rightarrow Pb$

First we have to calculate the cell potential for this reaction.

Using Nernest equation :

$E_{cell}=E^o_{cell}-\frac{2.303RT}{nF}\log \frac{[Zn^{2+}]}{[Pb^{2+}]}$

where,

F = Faraday constant = 96500 C

R = gas constant = 8.314 J/mol.K

T = room temperature = $25^oC=273+25=298K$

n = number of electrons in oxidation-reduction reaction = 2

$E^o_{cell}$ = standard electrode potential of the cell = +0.63 V

$E_{cell}$ = cell potential for the reaction = ?

$[Zn^{2+}]$ = 3.5 M

$[Pb^{2+}]$ = $2.0\times 10^{-4}M$

Now put all the given values in the above equation, we get:

$E_{cell}=(+0.63)-\frac{2.303\times (8.314)\times (298)}{2\times 96500}\log \frac{3.5}{2.0\times 10^{-4}}$

$E_{cell}=0.50V$

Therefore, the cell potential for this reaction is 0.50 V

5 0

3 years ago

Rocks and sand are nonliving .all organisms are

solong [7]

Hey there!

Rocks and sand are nonliving. All organisms are living.
Living organisms have five characteristics. Living organisms respond to a stimulus, need energy, grow, reproduce, and get rid of wastes. All living organisms consist of cells.

Hope this helps! Have a Brainly day! :D

5 0

3 years ago

Water has a slight negative charge around its oxygen atom, and a slight positive charge around its hydrogen atoms Which type of

allochka39001 [22]

C.
Water is polar because one side of the molecule is positive and the other is negative.

3 0

3 years ago

Read 2 more answers

How much thermal energy is in 100 grams of water at 50 degrees Celsius

Ymorist [56]

when the thermal energy is the energy contained within a system that is responsible for its temperature.

and when the thermal energy is can be determined by this formula:

q = M * C *ΔT

when q is the thermal energy

and M is the mass of water = 100 g

and C is the specific heat capacity of water = 4.18 joules/gram.°C

and T is the difference in Temperature = 50 °C

So by substitution:

∴ q = 100 g * 4.18 J/g.°C * 50

= 20900 J = 20.9 KJ

6 0

3 years ago

Read 2 more answers