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
schepotkina [342]
3 years ago
11

Which statement best describes the properties of ionic compounds? They are brittle, solid at room temperature, and have a high m

elting point. They are always composed of an equal proportion of cations to anions. They mostly have low melting and boiling points. They are good conductors of heat and electricity and are ductile and malleable.
Chemistry
2 answers:
djverab [1.8K]3 years ago
6 0
They are good conductors of heat and electricity.

They are solid at room tempature

They have a high melting point
Aleks04 [339]3 years ago
4 0
The answer is the first one! 

I hope this helps. :)
You might be interested in
13. What is the symbol for Enthalpy change?
OverLord2011 [107]

Answer:

Explanation:

13 ) symbol of enthalpy change = Δ H .

14 ) enthalpy change is nothing but heat absorbed or evolved .

During fusion enthalpy change

Δ H .= m Lf , m is mass and Ls is latent heat of fusion

During evaporation, enthalpy change

Δ H .= m Lv , m is mass and Lv is latent heat of evaporation

during temperature rise , enthalpy  change

Δ H = m c Δ T

In case of gas , enthalpy change can be calculated by the following relation

Δ H = Δ E + W , Δ E is change in internal energy , W is work done by gas.

15 ) When enthalpy change is negative , that means heat is released to the environment .So reaction is called exothermic .

when heat is absorbed enthalpy change is positive . Reaction is endothermic.

5 0
3 years ago
Which is the most reactive metal
Lena [83]

The most reactive metal on the periodic table is Francium, However, Francium is an artificial element and only minimal quantities have been produced, so for all practical purposes, the most reactive metal available is Cesium, in the alkali metal family.


ANSWER In theory, Francium, in practice the Cesium


\textbf{Spymore}​

8 0
3 years ago
What type of solvent would be required to dissolve nonpolar compounds?
mina [271]
For example, ionic compounds, which are very polar, are often soluble in the polar solvent water. Nonpolar substances are likely to dissolve in nonpolar solvents. For example, nonpolar molecular substances are likely to dissolve in hexane, a common nonpolar solvent.
4 0
2 years ago
Read 2 more answers
Boron has two naturally-ocurring isotopes. Boron-10 has an abundance of 19.8% and actual mass of 10.013 amu, and boron-11 has an
aniked [119]

Answer:

Average atomic mass = 10.812 amu

Explanation:

The formula for the calculation of the average atomic mass is:

Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})

Given that:

<u>For first isotope, Boron-10: </u>

% = 19.8 %

Mass = 10.013 amu

<u>For second isotope, Boron-11: </u>

% = 80.2 %

Mass = 11.009 amu

Thus,  

Average\ atomic\ mass=\frac{19.8}{100}\times {10.013}+\frac{80.2}{100}\times {11.009}=1.982574+8.829218=10.811792

<u>Average atomic mass = 10.812 amu</u>

6 0
3 years ago
Read 2 more answers
Which outcome is the main function of the light-dependent reactions of photosynthesis?
andrew-mc [135]

Answer:

oxygen, water and sugar are the out come of photosynthesis

7 0
3 years ago
Other questions:
  • Whats the lewis dot diagram for calcium
    13·1 answer
  • An aluminum can weighing 10 g absorbs 106.8 J of heat and warms by 12oC. What is the specific heat of the aluminum can?
    11·2 answers
  • Arrange the elements in order of increasing atomic radius. Use the periodic table to help you.
    11·2 answers
  • if 31.2 grams of tin (IV) carbonate are actually formed when this reaction goes to completion, what is the percent yield?
    15·1 answer
  • What would the final salt concentration be if instead of placing the dialysis bag in 4.0 L of distilled water for 12 h, you plac
    7·1 answer
  • Acts as the digestive system inside a cell. It helps to break down old or unneeded parts of the cell, and substances that have b
    5·1 answer
  • PLSSS ANSWERRRRR????
    14·1 answer
  • Name the following ketone:
    10·1 answer
  • All rocks began as what type of rock?<br> planetary<br> igneous<br> metamorphic<br> sedimentary
    5·1 answer
  • 14) How many molecules are there in 9.34 kg of water?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!