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
Cerrena [4.2K]
3 years ago
15

Which of the following statements regarding physical and chemical changes is true?

Chemistry
1 answer:
skad [1K]3 years ago
8 0
There’s no choices to pick from
You might be interested in
A container of hydrogen at 172 kPa was decreased to 85.0 kPa producing a new volume of 3L. What was the original volume?
Aneli [31]

Answer:

<h2>The answer is 1.48 L</h2>

Explanation:

In order to find the original volume we use the same for Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the original volume

V_1 =  \frac{P_2V_2}{P_1}  \\

From the question

P1 = 172 kPa = 172000 Pa

P2 = 85 kPa = 85000 Pa

V2 = 3 L

We have

V_1 =  \frac{85000 \times 3}{172000}  =  \frac{255000}{172000}  =  \frac{255}{172}  \\  = 1.482558139...

We have the final answer as

<h3>1.48 L</h3>

Hope this helps you

4 0
3 years ago
The polymer formed from the monomer ch2=ch–cn is select one:
podryga [215]
Answer:
             None of the given options show polymer made up of H₂C=CH-CN (Acrylonitrile).

Explanation:
                   Acrylonitrile (H₂C=CH-CN) which is a monomer on self linkage results in a large chain polymer called as Polyacrylonitrile.
                   The structure of Polyacrylonitrile is as follow,

                                             --(H₂C-CHCN-)n--

Where n shows the number of Acrylonitrile units joined together in the formation of Polyacrylonitrile. This polymerization reaction can take place by different mechanisms including free radical mechanism, acid catalyzed addition or base catalyzed addition reaction.

The polymerization is shown below,

5 0
3 years ago
Select the correct layer.<br> In which layer is lithification most likely to occur?
Vera_Pavlovna [14]

Answer:

"Subsoil" is the correct answer.

Explanation:

  • The method of transforming sediments become rocky solids is considered as Lithification. The floor stratum or level below the upper floors at the base of the floor is a Subsoil.
  • Sediments comprise materials particles like sand, pebbles, skeletons kind of bones as well as muck, that were transported and produced instead in water or perhaps wind someplace.
8 0
3 years ago
What is the average deer per month
Nuetrik [128]

Answer:

25

Explanation:

explain no need it is perfect

8 0
3 years ago
Read 2 more answers
4. How many joules of heat are absorbed to raise
hodyreva [135]

. How many joules of heat are absorbed to raise

the temperature of 37 grams of water from 25°C

to 75°C?

7 0
2 years ago
Other questions:
  • Which is an example of plasmas in nature? solar cells plasma balls auroras clouds
    9·2 answers
  • A large area of flat land elevated high above sea level is called a a. syncline. b. plateau. c. canyon. d. fault
    5·2 answers
  • Which class of organic compound is least likely to be used as an organic solvent? aldehyde ketone alkyl halide ether
    9·2 answers
  • which object would have more potential energy a bowling ball stored on a high shelf in a closet or a baseball on the same shelf?
    7·1 answer
  • Please helppppp!!!
    5·1 answer
  • Can violance be justified when words fail to bring social justice
    13·1 answer
  • What evidence is there of energy release after chemical reaction
    10·1 answer
  • I need help with this! I don't fully understand it
    15·1 answer
  • The pressure of a sample of gas is measured at sea level with an open-end mercury manometer, and the liquid level is 13.7 cm hig
    15·1 answer
  • The nurse is educating a patient with cirrhosis about the importance of maintaining a low-sodium diet. what food item would be p
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!