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
klemol [59]
3 years ago
8

Which of the following represent chemical processes? Which represent physical processes?

Chemistry
1 answer:
Viktor [21]3 years ago
7 0

Answer:

A). Calcium chloride dihydrate (CaCl2 * 2H2O) slowly heated in a crucible to become calcium chloride (anhydrous).

Dehyration is a physical process

B). A hydrocarbon such as propane (C3H8) undergoes combustion to power a grill

Combustion is a chemical process.

C). A rock climber’s rope becomes frayed and turns the color of the rocks

This is physical process

D). A dog urinates on an air conditioner coil and the coil becomes corroded

Corrsion is a chemical process.

Explanation:

You might be interested in
13. What is the charge of an aluminum ion that has 13 protons and 10 electrons?
Ksenya-84 [330]

Answer:

+ 3

Ex planation:

Al3+ indicates an ion of aluminum having a charge of + 3. I.e., since an aluminum atom normally has 13 protons and 13 electrons, this ion has 10 electrons (-10 charge) and 13 protons (+ 13 charge) giving it a charge of + 3 (-10 + 13 = +3).

hope this helps!

7 0
4 years ago
Read 2 more answers
Using hooke's law , f s p r i n g = k ^ x , find the force needed to strech a spring 2 cm if it has an elastic constant of 3 N/c
dlinn [17]
I believe it is D. 6 N
4 0
3 years ago
Explain why silicon carbide has a very high melting point​
Allushta [10]

Answer:

Silicon has a very high melting point due to its giant covalent structure; a lot of energy is needed to break the strong covalent bonds throughout the structure.

Explanation:

4 0
2 years ago
Read 2 more answers
I need HELP!
Serjik [45]

Answer:

D

Explanation:

Scientists measure a variety of properties to determine water quality. These include temperature, acidity (pH), dissolved solids (specific conductance), particulate matter (turbidity), dissolved oxygen, hardness and suspended sediment.

6 0
3 years ago
Draw stearic acid (octadecanoic acid). You do not need to draw hydrogen atoms attached to carbon atoms.
postnew [5]

Answer:

The structure of stearic acid (octadecanoic acid) is shown in the attachment below

Explanation:

Stearic acid is an example of a saturated fatty acid. The structure of stearic acid is shown in the attachment below.

5 0
3 years ago
Other questions:
  • Isotopes are atoms with the SAME number of protons, but DIFFERENT numbers of neutrons. Question 8 options: True False
    9·1 answer
  • 1.8 x 1022 atoms of Rn to moles of Rn​
    7·1 answer
  • What is the density of 8.96g/1ml
    8·2 answers
  • A phase diagram assumes ______ is kept constant
    11·2 answers
  • The diagram below represents a portion of a cell membrane. The arrow indicates that the cell membrane is carrying out the proces
    10·1 answer
  • I need more help with science again
    14·2 answers
  • Are there other universes ??
    8·1 answer
  • 4. What is the common name of the compound CaOCI,?​
    11·1 answer
  • Give reasons for : The empirical and molecular formulas of methane gas (CH4) are<br>identical.​
    7·1 answer
  • Ionic, covalent and metallic. How many of these can form giant structures?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!