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
marshall27 [118]
3 years ago
8

Can a substance be cooled to a temperature below its freezing point

Chemistry
1 answer:
Fittoniya [83]3 years ago
5 0
Pure, crystalline solids have a characteristic melting point, the temperature at which the solid melts to become a liquid. The transition between the solid and the liquid is so sharp for small samples of a pure substance that melting points can be measured to 0.1oC. The melting point of solid oxygen, for example, is -218.4o<span>C.</span>
You might be interested in
What is a net ionic equation?
jolli1 [7]

Answer:

I think it will option D hope it helps

7 0
3 years ago
Ammonia can be produced in the laboratory by heating ammonium chloride
AnnyKZ [126]

Answer:

Mass = 2.89 g

Explanation:

Given data:

Mass of NH₄Cl = 8.939 g

Mass of Ca(OH)₂ = 7.48 g

Mass of ammonia produced = ?

Solution:

2NH₄Cl   +  Ca(OH)₂     →    CaCl₂ + 2NH₃ + 2H₂O

Number of moles of NH₄Cl:

Number of moles = mass/molar mass

Number of moles = 8.939 g / 53.5 g/mol

Number of moles = 0.17 mol

Number of moles of Ca(OH)₂ :

Number of moles = mass/molar mass

Number of moles = 7.48 g / 74.1 g/mol

Number of moles = 0.10 mol

Now we will compare the moles of ammonia with both reactant.

                      NH₄Cl          :          NH₃

                          2              :           2

                         0.17          :          0.17

                   Ca(OH)₂         :          NH₃

                        1                :           2

                    0.10              :          2/1×0.10 = 0.2 mol

Less number of moles of ammonia are produced by ammonium chloride it will act as limiting reactant.

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 0.17 mol × 17 g/mol

Mass = 2.89 g

6 0
2 years ago
The light-independent reactions of photosynthesis need
Oxana [17]

Answer:

I don’t know

Explanation:

3 0
3 years ago
Help me please show the work
Feliz [49]

2 => 6 meters = 600cm

3 => 70 quarts = 17.5 gallon

50 inches = 1.5 meters

2,000 grains = 4.57 ounces

7 tablespoons = 0.027344 gal

3 0
3 years ago
Could somebody please give me an example of some physical properties for any substance?
KIM [24]

Answer:

A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Explanation:

6 0
2 years ago
Other questions:
  • What factors affect the temperature of sea water
    13·1 answer
  • Which scientist did people think was insane so they dismissed his ideas for almost 2000 years?
    5·1 answer
  • Which of the following is the major product in the electrophilic addition of HCl to (3S)-2,3-dimethylpent-1-ene?
    15·1 answer
  • What volume of 1.10 M SrCl2 is needed to prepare 525 mL of 5.00 mM SrCl2?
    8·1 answer
  • What all separation methods are used in food industry ?
    10·1 answer
  • What does the 2 mean in the formula 5Mg3(PO4)2? There are two elements in magnesium phosphate. There are two molecules of magnes
    10·1 answer
  • In ionic bonding, atoms__.
    9·1 answer
  • Plz help!<br><br> What must change in order to change the amount of power?
    8·1 answer
  • Identify the products of this single-replacement reaction between sulfuric acid and aluminum. Then balance the equation. (2 poin
    9·1 answer
  • 0 clue what is going on. pls help
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!