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
Maslowich
3 years ago
9

Answer Quickly : Define and compare boiling points, melting points, and freezing points.

Chemistry
1 answer:
juin [17]3 years ago
3 0
Boiling point is the temperature at which a substance begins to change to a gas. Melting point is the temperature at which a substance begins to turn into a liquid. And freezing point is the temperature at which a substance begins turning into a solid.
You might be interested in
A chemist must dilute 47.2 mL of 150. mM aqueous sodium nitrate solution until the concentration falls to . He'll do this by add
erma4kov [3.2K]

Answer:

0.295 L

Explanation:

It seems your question lacks the final concentration value. But an internet search tells me this might be the complete question:

" A chemist must dilute 47.2 mL of 150. mM aqueous sodium nitrate solution until the concentration falls to 24.0 mM. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in liters. Be sure your answer has the correct number of significant digits. "

Keep in mind that if your value is different, the answer will be different as well. However the methodology will remain the same.

To solve this problem we can<u> use the formula</u> C₁V₁=C₂V₂

Where the subscript 1 refers to the concentrated solution and the subscript 2 to the diluted one.

  • 47.2 mL * 150 mM = 24.0 mM * V₂
  • V₂ = 295 mL

And <u>converting into L </u>becomes:

  • 295 mL * \frac{1 L}{1000mL} = 0.295 L

6 0
4 years ago
1.4g of calcium oxide obtained by heating limestone was found to contain 0.4g of oxygen.another sample of 3.5g of calcium oxide
Leya [2.2K]

Answer:

Solution

1.4 gm of CaO⟶n0.4 gm of Oxygen

1.0 gm of O2⟶3.5 gm of Ca

According to the law of definite proportions

n/m=y/x

⇒1.4/0.4=3.5.

⇒3.5=3.5

Explanation:

6 0
3 years ago
4.80 x 10^25 formula units pf calcium iodide (Cal2) will have what mass?
maw [93]

Answer:

mass CaI2 = 23.424 Kg

Explanation:

From the periodic table we obtain for CaI2:

⇒ molecular mass CaI2: 40.078  + ((2)(126.90)) = 293.878 g/mol

∴ mol CaI2 = (4.80 E25 units )×(mol/6.022 E23 units) = 79.708  mol CaI2

⇒ mass CaI2 = (79.708 mol CaI2)×(293.878 g/mol) = 23424.43 g

⇒ mass CaI2 = 23.424 Kg

7 0
4 years ago
A flask holds 3.01 x 10^23 molecules of carbon dioxide. The container is holding
Andrew [12]
B) 0.50 moles of carbon dioxide.

4 0
4 years ago
Help me this, I only have 10 minutes to answer!!!!
Nana76 [90]

Answer:sedimentary

Explanation:

3 0
3 years ago
Other questions:
  • How much salt is in 300 g of a 3.5 % solution of salt water?
    15·1 answer
  • Explain what is wrong with the following structure. H— H —
    5·2 answers
  • Why does warm soda go flat faster than chilled soda?
    12·2 answers
  • What type of reaction is
    6·1 answer
  • Need help please help
    6·1 answer
  • How many moles in 1.5×10^23 molecules of NH3?
    6·1 answer
  • Two Places were freshwater is found on earth
    5·2 answers
  • Why do scientists use microscopes to observe cells?
    9·2 answers
  • In his science class, Mr. Brown heats a small amount of iodine in a test tube. The iodine changes into a pink gas without changi
    12·2 answers
  • 1. What is the density of a liquid with a mass of 25.0 g
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!