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
LekaFEV [45]
2 years ago
14

Label each of the following changes as a physical change or chemical change. Give evidence to support your answer.

Chemistry
1 answer:
SVEN [57.7K]2 years ago
3 0

Answer:

A catalytic converter changes nitrogen dioxide to nitrogen gas and oxygen gas is a chemical change.

Explanation:

Hello.

In this case, since physical changes do not modify the molecular composition and structure of the material undergoing it whereas the chemical change does, for catalytic converters we should know they promote chemical reaction in which the composition is changed; for instance, for the given example, the following chemical reaction is the evidence:

2NO_2\rightarrow N_2+O_2

As you can see, nitrogen and oxygen are no longer bonded but separated by themselves, therefore, this is a chemical change.

Best regards.

You might be interested in
You have forgotten the ideal gas constant. Describe an experiment, similar to this one, that would allow you to determine the va
Gelneren [198K]

Information would you need to know about the H₂O₂ solution is through stoichiometry experiment

The ideal gas constant R can be found experimentally by determining the number of moles of gas that occupies a particular measured volume at a known pressure and temprature and the H₂O₂ is a chemical compound used un various chemical reactions and is slightly viscous than water and the experiment by decomposition of hydrogen peroxide and using the ideal gas law rearrangement equation we can calculate the value of r and we will need the information such as concentration, volume and moles of  H₂O₂ to determine its stoichiometry

Know more about ideal gas constant

brainly.com/question/20372603

#SPJ4

5 0
1 year ago
The element carbon (C) is most likely to form covalent bonds with the element
pochemuha
<span>Carbon (C) is most likely to form covalent bonds with Beryllium (Be) or Sodium (Na) because they are both metals and covalent bonds are metals that share their valence electrons with the gases / non-metals to get to the stable octet. Krypton is a gas and Selenium is a metalloid</span>
4 0
2 years ago
When forming a chemical bond only the<br> blank electrons participate in the bonding process
serious [3.7K]

A chemical bond is created by either the transfer or sharing of electrons. Electrons with a missing full outer shell will be the ones participating in the bonding process. Hope this helped :)

3 0
2 years ago
Which is the most likely to be reduced?
tigry1 [53]

Answer:

Fe3+

Explanation:

6 0
2 years ago
Read 2 more answers
A pharmacist wishes to mix a solution that is 5% Minoxidil. She has on hand 80 ml of a 4% solution and wishes to add some 7% sol
Alona [7]
<span>The 80 ml solution has (.04)(80) ml of the medicine, or 3.3 ml of medicine.The pharmacist adds V ml of 7% solution, or .07V ml of medicine. The total amoune of medicine is (.07V + 3.2) mg. The total volume of solution is (V + 80) ml, so (.07V + 3.2) / (V + 80) = .05. Solve for V.</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • A form of electricity which can attract things
    5·1 answer
  • fill in the blank: 1.)the amount of space that matter fills is its.................. 2.)a state of matter with a definite volume
    7·2 answers
  • A chemist has a block of aluminum metal (density is 2.7 g/mL). The block weighs 1.5. What is the volume of the aluminum block?
    10·1 answer
  • How does the ionic radius of a nonmetal compare with its atomic radius?
    14·2 answers
  • Help thank you so so much!
    15·1 answer
  • Nitrogen-fixers are the critical links between ______.
    6·2 answers
  • The decomposition of ammonia is: 2 NH3(g) ⇌ N2(g) + 3 H2(g). If Kp is 1.5 × 103 at 400°C, what is the partial pressure of ammoni
    13·1 answer
  • Calculate the average obtained from the following weighings of the same object. Do not forget to include formulas, units, and th
    8·1 answer
  • Which of the following demonstrates the role of chemistry in getting ready for
    7·1 answer
  • Which of the following is the best way to
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!