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
Paladinen [302]
3 years ago
15

.

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

Answer: Option (c) is the correct answer.

Explanation:

Molecules of a molecular solid are held together by weak forces like london dispersion forces, dipole-dipole forces.

So, due to weak forces present in these molecules it is easy to break the bond between them. Hence, molecular solids have low melting point.

Whereas in ionic compounds, atoms are held together by strong forces due to the presence of opposite charges on the atoms of the solid.

Therefore, we can conclude that compared with the melting points of ionic compounds, the melting points of molecular solids tend to be lower.

11111nata11111 [884]3 years ago
5 0
Lower

Melting points of molecular solids are lower than melting points of ionic compounds 
You might be interested in
An isotope with 8 protons, 9 neutrons, and 8 electrons would have which symbol? A) 16F
lukranit [14]
D) Oxygen-17

Oxygen-17 is an isotope with 8 protons, 8 electrons, and 9 neutrons.
6 0
4 years ago
Read 2 more answers
Read the description of the motion and decide if the kinetic energy (KE) and the gravitational potential energy (PE) is increasi
SashulF [63]

Answer:

KE increases and PE decreases

7 0
3 years ago
Which describe a molecules (select all that apply)a) It can be two or more of the same elements combine together.b) It can be th
kenny6666 [7]

combinedAnswer

It can be two or more of the same elements combine together

It can be two or more different elements combined

Step-by-step explanation:

A molecule is a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

A molecule can also be two or more different elements combined.

7 0
2 years ago
What volume of ethylene glycol (C2H6O2), a nonelectrolyte, must be added to 11.0 L of water to produce an antifreeze solution wi
shusha [124]

Answer:

The volume of ethylene glycol, we must add is 8.2 L

Explanation:

Let's apply the formula for the colligative property of Depression of freezing point, to solve this

ΔT = Kf . m . i

Where ΔT = Fussion T° in pure solvent - Fussion T° in solution

Kf = Cryoscopic constant (equal to 1.86 °C kg/mol for the freezing point of water)

m  = molality (mol of solute in 1kg of solvent)

i = The number of ions dissolved in solution. As it is a non-electrolytic compound, the i values 1 (Van't Hoff factor)

0°C - (-25°C) = 1.86 kg°C/mol . m

25°C / 1.86 m/kg°C = m

13.4 = mol/kg

As water density is 1 g/ml, let's convert firstly 11L in mL

11L .1000 = 11000mL

In conclusion, we have 11000 g of water.

density = mass / volume

So, if we have 13.4 moles in 1 kg of water, how many moles of ethylene glycol do we have, in 11000 g of water.

11000 g = 11kg

1 kg _____ 13.4 moles of ethylene glycol

11 kg _____ (11 . 13.4)/1 = 147.4 moles

Molar mass of ethylene glycol = 62.07 g/m

Moles . molar mass = mass

147.4 m  . 62.07g/m = 9149.1 g

Now we can apply density of ethylene glycol to find out the volume

Density ethylene glycol = ethylene glycol mass / ethylene glycol volume

1.11 g/ml = 9149.1 g / ethylene glycol volume

ethylene glycol volume = 9149.1 g/ 1.11 g/ml

ethylene glycol volume = 8242 mL

8242 mL  = 8.2 L

8 0
4 years ago
What is the difference between a closed system and open?
Bond [772]

Answer: A “system in exchange of matter with its environment, presenting import and export, building-up and breaking-down of its material components.”

Explanation:

4 0
3 years ago
Other questions:
  • Name the element in the fourth period of the periodic table with six 4p electrons.
    12·1 answer
  • Magnesium + Sulfuric acid
    9·1 answer
  • Which state of matter are required for energy transfer to occur when radiant energy is the source?
    13·1 answer
  • .......................................................
    11·2 answers
  • How many atoms of each element are present in
    14·1 answer
  • How many core electrons does magnesium ion have​
    6·2 answers
  • If 8 g of ammonium hydroxide is completely decomposed by the reaction below in a closed container with a total volume of 5.oo L
    14·1 answer
  • What does this graph show about the acceleration of the moving object?
    6·1 answer
  • The average yearly temperatures and latitudes of four cities are shown in the table above. Which of the following is demonstrate
    15·2 answers
  • 500.0 mL of a 0.455 M solution of LiBr is diluted to 700.0 mL. What is the new concentration of the solution?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!