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
MgSO4(aq) + 2NaOH(aq) Mg(OH)2(s) + Na2SO4(aq) i. Write the complete ionic equation from the balanced equation. (3 points) Please
Igoryamba

Answer:

Mg²⁺(aq) + SO₄²⁻(aq) + 2Na⁺(aq) + 2OH⁻(aq) → Mg²⁺(aq) + 2OH⁻(s) + 2Na⁺(aq) + SO₄²⁻(aq)

Explanation:

The complete ionic equation is the chemical equation where the chemical species in the aqueous phase (aq) are written as ions.

In the reaction:

MgSO₄(aq) + 2NaOH(aq) → Mg(OH)₂(s) + Na₂SO₄(aq)

MgSO₄ dissociates in Mg²⁺ and SO₄²⁻, NaOH in Na⁺ and OH⁻, Mg(OH)₂ doesn't dissociate because is as solid and NaSO₄ dissociates in Na⁺ and SO₄²⁻ ions.

That means the complete ionic equation is:

<h3>Mg²⁺(aq) + SO₄²⁻(aq) + 2Na⁺(aq) + 2OH⁻(aq) → Mg²⁺(aq) + 2OH⁻(s) + 2Na⁺(aq) + SO₄²⁻(aq)</h3>

4 0
3 years ago
How are binary ionic compounds and binary molecular compounds similar and 2 ways they are different?
saw5 [17]

Answer:

The elements that combine to form binary molecular compounds are both nonmetal atoms. This contrasts with ionic compounds, which were formed from a metal ion and a nonmetal ion. ... Prefixes are used in the names of binary molecular compounds to identify the number of atoms of each element.

5 0
3 years ago
What is the mass of 6.02 x 1022 atoms of Xenon? HELP!!!!!
il63 [147K]
So 6.02*10^22 is avogadro constant, which is the amount of atoms in one mole. If you look Xenon up in the periodic table you will find it's mass given <span>131,293, which is grams per 1 mole. 

</span>
8 0
3 years ago
A gas at 20.0°C and 52.1 mL is heated to 93.5°C. What is the new volume?
lawyer [7]
\frac{ V_{1} }{ T_{1} } = \frac{ V_{2} }{ T_{2} }
V_{1} = 0.0521 L
T_{1} = 293.15 K
T_{2} = 366.65 K

Solve for V_{2}

\frac{0.0521 L}{293.15 K} = \frac { V_{2} }{366.65 K}

V_{2} = 0.06516 L or 65.2 mL
7 0
3 years ago
Which skill involves creating representation of complex objects or processes
lesya692 [45]

Answer:

Making models

Explanation:

Classifying is the grouping together of items that are alike in some way. Answer: Making models involves creating rep- resentations of complex objects or processes.

6 0
3 years ago
Other questions:
  • Will maynez burns a 0.8-g peanut beneath 76 g of water, which increases in temperature from 22âc to 46 âc. (the specific heat ca
    7·1 answer
  • Help? how can i do this?​
    6·1 answer
  • Convert 0.0052 meters to millimeters
    9·2 answers
  • Which of these is a TRUE statement? A) Sound travels through gases easier than liquids. B) Sound travels through solids easier t
    6·2 answers
  • Name some gaseous element in unpolluted air ?
    13·2 answers
  • What is the change in elevation between points a and b?
    11·2 answers
  • The superheated water vapor is at 15 MPa and 350°C. The gas constant, the critical pressure, and the critical temperature of wat
    7·1 answer
  • Plss help ill give 30 points
    12·1 answer
  • Which device involves the use of plasma in technology?
    7·1 answer
  • What mass of oxygen reacts during the incomplete combustion of 18.0 g of propane?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!