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
Jet001 [13]
3 years ago
14

Analysis of an unknown substance indicates that it is a brittle solid. It acts as an electrical insulator (does not conduct) as

a solid but conducts electricity when melted. Which of the following substances would have these characteristics?
a. HCl
b. Al
c. KBr
d. SiF4
e. I2
Chemistry
1 answer:
Musya8 [376]3 years ago
5 0

Answer:

KBr

Explanation:

A metal has a very high melting point. Aluminum is a metal.

Ionic solids do not conduct electricity in the solid state. However, when the solids are melted, they conduct electricity.

KBr is an ionic substance, it can only conduct electricity in molten form because the ions are locked up in the solid.

You might be interested in
A
vodka [1.7K]
In my opinion the answer is identical
3 0
2 years ago
Read 2 more answers
Perform the following
vivado [14]
The correct number of significant figures and digits is 3
5 0
3 years ago
What is an exotoxin?
Elodia [21]
Exotoxin is a toxin secreted by bacteria. exotoxin can cause damage to the host by destroying cells or disrupting normal cellular metabolism
8 0
3 years ago
***Question in photo***<br><br> Is the entropy positive or negative in this question?
Kamila [148]

Answer:

Enthalpy change is negative

Entropy change is Positive

Explanation:

4 0
3 years ago
20 ML of a gas at 200 K is heated until the new volume is 55ML what is the final temperature of the gas
MrRa [10]

Answer:

T2 = 550K

Explanation:

From Charles law;

V1/T1 = V2/T2

Where;

V1 is initial volume

V2 is final volume

T1 is initial temperature

T2 is final temperature

We are given;

V1 = 20 mL

V2 = 55 mL

T1 = 200 K

Thus from V1/T1 = V2/T2, making T2 the subject;

T2 = (V2 × T1)/V1

T2 = (55 × 200)/20

T2 = 550K

8 0
2 years ago
Other questions:
  • Three carbon atoms are linked by single covalent bonds such that they form the shape of a v. all of the unshared electrons form
    5·1 answer
  • How much energy is released by the decay of 3 grams of 230Th in the following reaction 230 Th - 226Ra + "He (230 Th = 229.9837 g
    8·1 answer
  • This chemical equation represents the burning of methane, but the equation is incomplete. What is the missing coefficient in bot
    6·2 answers
  • What is the mole fraction of solute and the molal concentration for an aqueous solution that is 16.0% NaOH by mass?
    6·1 answer
  • Why is litmus paper an example of an indicator
    6·1 answer
  • In the titration between potassium iodate and the sodium thiosulfate solution, if the titration is not performed immediately aft
    9·1 answer
  • Predict ​the polarity of 6 real molecules. First, draw the molecules and any bond dipoles. Then draw any molecular dipoles. Expl
    9·1 answer
  • A sample of an ideal gas (5.00 L) in a closed container at 28.0°C and 95.0 torr is heated to 290 °C. The pressure of the gas at
    6·1 answer
  • Propane reacts with elemental oxygen gas according to the unbalanced reaction, C3H8(g) + O2(g) → CO2(g) + H2O(l). What is the co
    14·1 answer
  • A student tests the properties of an element and finds that it is malleable, shiny, and conducts electricity. Based only on the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!