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
MArishka [77]
2 years ago
15

what the type of solid materials are typically hard, have high melting pionts and poor electrical conductivities​

Chemistry
2 answers:
Virty [35]2 years ago
7 0

Answer:

Ionic solids

Explanation: Ionic solids—Made up of positive and negative ions and held together by electrostatic attractions. They're characterized by very high melting points and brittleness and are poor conductors in the solid state. An example of an ionic solid is table salt, NaCl.

sveticcg [70]2 years ago
6 0

Answer:

Ionic solids

Explanation:

You might be interested in
(50 POINTS AND WILL GIVE BRAINLY!) which actions will help a package of hot chocolate powder to dissolve more quickly?
musickatia [10]

A , i think because pure water won't dissolve the powder fast.

3 0
3 years ago
What is the voltage of the voltaic cell Zn|Zn2+||Cu2+|Cu at 298 K if [Zn2+] = 0.2 M and [Cu2+] = 4.0 M? Cu2+ + 2e- → Cu Eo = +0.
OLga [1]

Answer : The voltage of the voltaic cell is 1.14 V

Explanation :

From the given cell representation, we conclude that

The copper will undergo reduction reaction will get reduced. Zinc will undergo oxidation reaction and will get oxidized.

The oxidation-reduction half cell reaction will be,

Oxidation half reaction:  Zn\rightarrow Zn^{2+}+2e^-

Reduction half reaction:  Cu^{2+}+2e^-\rightarrow Cu

Oxidation reaction occurs at anode and reduction reaction occurs at cathode. That means, gold shows reduction and occurs at cathode and chromium shows oxidation and occurs at anode.

The overall balanced equation of the cell is,

Zn+Cu^{2+}\rightarrow Zn^{2+}+Cu

To calculate the E^o{cell} of the reaction, we use the equation:

E^o_{cell}=E^o_{cathode}-E^o_{anode}

E^o_{cell}=E^o_{(Cu^{2+}/Cu)}-E^o_{(Zn^{2+}/Zn)}

Putting values in above equation, we get:

E^o_{cell}=(+0.34V)-(-0.76V)

E^o_{cell}=1.1V

Now we have to calculate the emf or voltage of the cell.

Using Nernest equation at 298 K :

E_{cell}=E^o_{cell}-\frac{0.0592}{n}\log \frac{[Zn^{2+}]}{[Cu^{2+}]}

where,

n = number of electrons in oxidation-reduction reaction = 2

E_{cell} = ?

Now put all the given values in the above equation, we get:

E_{cell}=1.1-\frac{0.0592}{2}\log \frac{0.2}{4.0}

E_{cell}=1.14V

Therefore, the voltage of the voltaic cell is 1.14 V

5 0
3 years ago
We can change a gas to liquid by _____ the temperature and ______ the pressure.
mina [271]
Decreasing incresing
6 0
3 years ago
ILL GIVE YOU BRAINLIST !!! HAVE TO GET IT RIGHT !!
inysia [295]

Answer: The 3rd and 6th bullet point is the quantitative data.

Explanation: Quantitative data is expressed by NUMBERS and Qualitative data is expressed by WORDS. The 3rd and 6th one is correct because they both use numbers to compare how much time hummingbirds spent feeding on nectar.  

4 0
3 years ago
A chemistry student adds a quantity of an unknown solid compound X to 5.00 L of distilled water at 15.° C . After 10 minutes of
Yuliya22 [10]

Answer:

34 g/100 mL

Explanation:

The solubility of a compound can be expressed in g/100mL, for this we must divide the mass of the compound that dissolves in the solute by the volume of the solvent.

The solvent, in this case, is water, and that mass of the solute X that dissolved is the mass that was recovered after the solvent was drained and evaporated. So the solubility of X (S) is:

S = 0.17 kg/5L

S = 170g/5000mL

S = 170g/(5*1000)mL

S = 34 g/100 mL

8 0
3 years ago
Other questions:
  • What is the volume of 21.0 g of nitrogen gas at stp?
    15·1 answer
  • What is the ideal gas constant?
    12·1 answer
  • 4) What is an unconformity? Where can you find one in the Grand Canyon? What types of rocks contact at the "Great Unconformity,"
    10·1 answer
  • Which of the following gases is NOT found in Earth’s atmosphere?
    5·2 answers
  • Draw the product of the following reaction between propanoyl chloride and p-methoxynitrobenzene. Include all formal charges.
    11·2 answers
  • Please help question is attached
    8·1 answer
  • In these reactions involving iodine (1), determine whether iodine is oxidized or reduced.
    7·2 answers
  • HELP PLEASE!!!!<br> Can someone answer it as a paragraph please I should submit it today
    8·1 answer
  • Write a description of how you know a chemical reaction is occurring.
    6·1 answer
  • Although almost 80% of the atmosphere is made up of nitrogen gas, most living things
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!