1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
romanna [79]
3 years ago
13

How does hydrogen bonding affect water as it becomes colder and eventually freezes? (1 point)

Chemistry
1 answer:
Sergio039 [100]3 years ago
5 0
The 2nd one I think but I need some points
You might be interested in
he rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy . If the rate c
Leya [2.2K]

The question is incomplete, here is the complete question:

The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy Ea = 71.0 kJ/mol . If the rate constant of this reaction is 6.7 M^(-1)*s^(-1) at 244.0 degrees Celsius, what will the rate constant be at 324.0 degrees Celsius?

<u>Answer:</u> The rate constant at 324°C is 61.29M^{-1}s^{-1}

<u>Explanation:</u>

To calculate rate constant at two different temperatures of the reaction, we use Arrhenius equation, which is:

\ln(\frac{K_{324^oC}}{K_{244^oC}})=\frac{E_a}{R}[\frac{1}{T_1}-\frac{1}{T_2}]

where,

K_{244^oC} = equilibrium constant at 244°C = 6.7M^{-1}s^{-1}

K_{324^oC} = equilibrium constant at 324°C = ?

E_a = Activation energy = 71.0 kJ/mol = 71000 J/mol   (Conversion factor:  1 kJ = 1000 J)

R = Gas constant = 8.314 J/mol K

T_1 = initial temperature = 244^oC=[273+244]K=517K

T_2 = final temperature = 324^oC=[273+324]K=597K

Putting values in above equation, we get:

\ln(\frac{K_{324^oC}}{6.7})=\frac{71000J}{8.314J/mol.K}[\frac{1}{517}-\frac{1}{597}]\\\\K_{324^oC}=61.29M^{-1}s^{-1}

Hence, the rate constant at 324°C is 61.29M^{-1}s^{-1}

8 0
4 years ago
A sample of helium has a volume of 50.00 L at STP. How many helium atoms are in the sample? Show work
Setler79 [48]

Answer:

Explanation:

molar volume at STP=22.4 L

given volume=50.0 L

number of moles=given volume/molar volume

number of moles=50.0/22.4

number of moles=2.2

1 mole of helium =6.023*10^23 atoms

2.2 moles of helium =6.023*10^23*2.2=1.3*10^24

therefore 50.0 L of helium contain 1.33*10^24 atoms

4 0
3 years ago
What kind of liquid promote corrosion
MaRussiya [10]
Is this the whole answer?
7 0
4 years ago
Solid substance A has a melting point of 100°C. Liquid substance B has a freezing point of 110°C. For each substance, identify i
9966 [12]

Answer:

both will be at liquid state. the particles will move rapidly in all directions and will collide with other particles in random motion

4 0
3 years ago
When will a seed begin to germinate?
Vlada [557]
When it has sunlight and water
4 0
3 years ago
Read 2 more answers
Other questions:
  • How might a theory relate to a model
    8·1 answer
  • Write two solubility rules that are used in this lab
    15·1 answer
  • ____ KOH + H3PO4 = K3PO4 + H20
    8·1 answer
  • On a container of chicken broth you notice the instructions to ""shake well before serving."" Which of the following best descri
    12·1 answer
  • Identify the place in the diagram where sleet forms
    6·2 answers
  • 6/10
    9·1 answer
  • Why is using dendroclimatology not always a true measure of a past climate?
    5·1 answer
  • What are the reasons for Small Island States are particularly concerned with reducing carbon dioxide emissions
    9·1 answer
  • How long is radioactive waste from nuclear plants radioactive?
    10·2 answers
  • What does grain size generally indicate about the cooling of a melt? Choose one: A. Larger crystals indicate the melt cooled at
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!