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
My name is Ann [436]
3 years ago
14

According to the cooling curve, what is the approximate freezing point of the substance?

Chemistry
2 answers:
Dmitry_Shevchenko [17]3 years ago
6 0

Correct answer: B

Cooling curve is the plot of temperature versus time as the sample is allowed to cool. In a cooling curve, we start at a temperature greater than the boiling point. At this temperature, the sample is in gaseous state. At the boiling point, there is no change in temperature as the gaseous and liquid states are in equilibrium. As the temperature reduces further, the liquid starts to condense and at the melting point of the sample the liquid undergoes phase transition to solid state. At the melting temperature, a second plateau is observed as the temperature remains unchanged. At temperatures below the melting point, the sample exists as a solid.

So from the curve, the second plateau is observed at around -111^{0}C. This point represents the phase transition from liquid to solid state.

Vilka [71]3 years ago
5 0

Answer:

Its B broooooooo

You might be interested in
Which compound is made from metals and non metals​
Grace [21]
It’s -> Ionic compound
3 0
3 years ago
What does the symbol Pt mean in a chemical equation in chemistry?
uysha [10]

Explanation:

It is mean Platinum .

hope to helped.

5 0
3 years ago
How does the process of waste removal in a unicellular organism compare to the waste removal in a multicellular organism
Sonja [21]
The digestive system of multicellular is made up of several organs that work together to break down food so that it may be used in the body. Unicellular organisms have organelles, similar to organs, which help to digest food that will be used by the cell
6 0
3 years ago
Can someone help, please ??
Zinaida [17]
Number 13 is D. Mendeleev. He was a Russian chemist and inventor who formulated the periodic table.
5 0
3 years ago
Read 2 more answers
Concentration of 10.00 mL of HBr if it takes 5 mL of a 0.253 M LiOH solution to<br> neutralize it?
Sonbull [250]
In a titration, for an acid to neutralize a base, at the equivalence point, there should be an equal number of moles of H+ and OH-.

Moles of OH- can be found by multiplying the concentration of the base by the volume. (You will need to keep in mind the stoichimetric coefficients if the strong base is Ca(OH)₂, Ba(OH)₂, or Sr(OH)₂.

Moles of OH- = moles of H+
(0.253 M) * 0.005 L = 0.01000 L * c
c = 0.1265 M

The concentration of HBr is 0.127 M.
3 0
3 years ago
Other questions:
  • Different environments cause different species to __________.
    8·2 answers
  • Which statement correctly compares an atom of an alkali metal with an atom of the alkaline earth metal next to it on the periodi
    10·1 answer
  • How can you tell that a compound contains an ionic bond
    11·1 answer
  • What Is A Nebula?
    9·2 answers
  • How many core electrons does magnesium (Mg) have?
    7·2 answers
  • How much energy is transferred when 30.0<br> g of water is cooled from 25.0 °C to 12.7 °C.
    10·1 answer
  • 0.398 mol AgNO3 and 2.73 mol NH3 were added to enough water to give 1.00 L of solution at 25 °C. Calculate the equilibrium conce
    5·1 answer
  • Describe the possible components of a buffer solution. (Select all that apply.)
    8·1 answer
  • Which would have the LEAST gravitational potential energy (GPE)? A ball sitting on the ground An airplane flying 30,000 feet abo
    11·1 answer
  • Which formula can be used to calculate the percent yield?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!