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
vivado [14]
3 years ago
8

Give reason:

Chemistry
1 answer:
Darya [45]3 years ago
6 0

Answer:

a.The glass beads present in the fractionating column provide a large surface area for hot vapours to cool and condense repeatedly

b.Crystallization is better than evaporation because some solids can decompose or can get burned during evaporation

Explanation:

a.The fractionating column is fitted in the neck of the distillation flask containing the mixture of liquids to be separated

b. Also in some cases impurities can remain dissolved in the solution while evaporation which cannot be removed even after filtration

You might be interested in
I don’t get this please help!!
kodGreya [7K]
OK,lisen to me slowly,
all define you.all thing


1.Look at peridoic table which one is solid or others.
For example:hydrogen is air.
And you gonna explain what is hydrogen,

2.After look periodic table you will be able to know every element.

3.Dont forget to check your homework.!!

6 0
3 years ago
Describe your observations when the paper clip was gently crushed with the pestle
Ilya [14]

Answer:

We can do an experiment with vinegar to see what happens to the calcium in an eggshell when it is exposed to an acid.

8 0
2 years ago
If I have an unknown quantity of gas at a pressure of 0.72 atm, a volume of 22
Darina [25.2K]

Answer:

0.64 mol

Explanation:

Using ideal gas equation as follows;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the information provided in this question;

P = 0.72atm

V = 22 L

T = 30°C = 30 + 273 = 303K

n = ?

Using PV = nRT

n = PV/RT

n = (0.72 × 22) ÷ (0.0821 × 303)

n = 15.84 ÷ 24.88

n = 0.64 mol

8 0
3 years ago
When OH- and H+ ions are brought together, they quickly combine to form water molecules.
zlopas [31]

When OH- and H+ ions are brought together, they quickly combine to form water molecules.

a. True
b. False

The statement “When OH- and H+ ions are brought together, they quickly combine to form water molecules” is true. The answer is letter A.

8 0
3 years ago
Read 2 more answers
Hi I really need help
Nata [24]
The first one is the answer
6 0
2 years ago
Read 2 more answers
Other questions:
  • NEED HELP! FAST! WILL CHOOSE BRAINLIEST ANSWER!
    7·1 answer
  • What does a banana have that a human does not?
    12·2 answers
  • What is the coefficient of the acid that produces AlCl3 in the reaction mixing Al(OH)3 and HCl after the equation has been balan
    15·1 answer
  • For a species with a diploid number of 26, indicate how many chromosomes will be present in the somatic nuclei of individuals th
    13·1 answer
  • How do you know that an organism belongs to the animal kingdom
    6·1 answer
  • Putting rock salt on the roads during a snowstorm is an example of: A. Boiling point elevation B. Vapor pressure raising C. Vapo
    13·1 answer
  • HELP ASAP I NEED HELP FAST PLEASE
    12·2 answers
  • 9- These are found on the periodic table of elements and are made up of
    5·1 answer
  • I need help with this problem please
    5·1 answer
  • What is the<br> molality of 30g of NACI dissolved in 350g of water
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!