4 years ago

How do you distinguish a chemical change from a physical change

1 answer:

7 0

Answer:

One distinguishing feature between physical and chemical changes is that a physical change can be reverse or turn back to its original form, but chemical change cannot be return to its form because the material change.

Explanation:

You might be interested in

Which part(s) of a telephone involves the conversion of sound waves to electrical signals?

Karo-lina-s [1.5K]

I believe that the answer would be D, both the speaker and the microphone

3 0

3 years ago

what would be the final volume when 2.20 M solution is made from 25.0 mL of a 12.0 M solution? plzz show work

cupoosta [38]

Answer:

136.36 mL

Explanation:

Here we have to use the dilution formula

From C1V1= C2V2

Where;

C1= initial concentration of the solution= 12.0 M

C2= final concentration of the solution= 2.20 M

V1 = initial volume of the solution= 25.0 ml

V2= final volume of the solution= ?????

Then recall;

C1V1=C2V2

V2 = C1V1/C2

Substituting values from the parameters given;

V2= 12.0 × 25.0 / 2.20

V2= 136.36 mL

7 0

3 years ago

You use what energy for cooking and Heating

Fantom [35]

Answer: Thermal Energy

Explanation:

Thermal Energy is for anything that relates to heat, so a hairdryer also uses thermal energy

7 0

3 years ago

Read 2 more answers

What is the [H+] concentration of a solution with a pH of 3.78

lianna [129]

Answer:

[H+] = 1.66 x $10^{-4}$

Explanation:

To find the [H+] concentration of a solution, we can use the formula:

$[H+] = 10^{-pH}$

Let's plug in the pH.

$[H+] = 10^{-3.78}$

Evaluate the exponent.

[H+] = 1.66 x $10^{-4}$

Hope this helps!

6 0

3 years ago

You are planning to prepare 600 mL of 20% dextrose solution, by mixing your 5% and 50% dextrose solution. How much of each solut

PilotLPTM [1.2K]

Hdjdjejejeuuwuwjwjwjwwjwhwhwhehehehehehdhdhdhdhdhdh

3 0

3 years ago