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
Luden [163]
3 years ago
12

Which of the following is NOT an example of a chemical change?

Chemistry
2 answers:
puteri [66]3 years ago
5 0
I think it’s C...........
Katyanochek1 [597]3 years ago
4 0

Answer:

hi there !!

B) Water evaporates into steam.

this is correct because only physical state changes, steam can be cooled down to get water again.

You might be interested in
HEY ITS E AGAIN HELP ITS A TEST
valentina_108 [34]

Answer:

i am not 100% shure but the wind speed has little to effect it so a and b are not the answer so i think the answer is D

Explanation:if i got this wrong im sorry it has bin a wile since i answered a question like this.

4 0
2 years ago
What are the difference between a red giant and a red super giant
bixtya [17]

So, unlike red giants, red supergiants are simply bright, red stars. It so happens that they may be in the same evolutionary state, but it is also possible that they have moved on. For example, most massive stars will appear as red supergiants while helium is fused into carbon in the core.



hope this helps you !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


plzmark me as brainlies


8 0
3 years ago
Read 2 more answers
2. A sample of neon gas has a volume of 87.6 L at STP. How many moles are present?
PSYCHO15rus [73]

Answer:

                      3.91 moles of Neon

Explanation:

According to Avogadro's Law, same volume of any gas at standard temperature (273.15 K or O °C) and pressure (1 atm) will occupy same volume. And one mole of any Ideal gas occupies 22.4 dm³ (1 dm³ = 1 L).

Data Given:

                 n = moles = <u>???</u>

                 V = Volume = 87.6 L

Solution:

               As 22.4 L volume is occupied by one mole of gas then the 16.8 L of this gas will contain....

                          = ( 1 mole × 87.6 L) ÷ 22.4 L

                          = 3.91 moles

<h3>2nd Method:</h3>

                     Assuming that the gas is acting ideally, hence, applying ideal gas equation.

                              P V  =  n R T      ∴  R  =  0.08205 L⋅atm⋅K⁻¹⋅mol⁻¹

Solving for n,

                              n  =  P V / R T

Putting values,

                              n  =  (1 atm × 87.6 L)/(0.08205 L⋅atm⋅K⁻¹⋅mol⁻¹ × 273.15K)

                              n  =  3.91 moles

Result:

          87.6 L of Neon gas will contain 3.91 moles at standard temperature and pressure.

7 0
3 years ago
Ann and Carol each lift the timber with a force of 80 kg/m/s2. If they lift the timber a distance of 1.25 meters, how much work
Novosadov [1.4K]
Work is defined energy transferred from one to another. 
The formula for work done is work done = force x distance

So in our problem, force is equal to 80 kg/ m / s^2 and distance is equal to 1.25 meters. So plugging in our values will give us:

work done = 80 kg/ m/ s^2 * 1.25 m
= 100.00 J is the answer.
4 0
2 years ago
Which way of dissolving changes the chemical identity of the solute?
sasho [114]

Answer:

Ionization and dissociation

5 0
2 years ago
Read 2 more answers
Other questions:
  • 5 grams of NaHCO3 was added to 50 cm3 of 1.5 mol dm-3 hydrochloric acid, causing the temperature to decrease by 6.8 K. What is t
    10·2 answers
  • How many dots would a lewis dot structure for neon have?
    6·1 answer
  • Definition To: The capacity for doing work. It may be transformed from one form to another.
    15·1 answer
  • When a carbon atom joints chemically with an oxygen atom it makes carbon monoxide what is the term for carbon monoxide?
    7·1 answer
  • Genes are located in which part of a cell?
    15·2 answers
  • How much heat is absorbed during production of 112g of NO by the combination of nitrogen and oxygen? . N2(g)+O2(g)→2NO(g), ΔH =
    7·2 answers
  • compare and contrast the benefits with the potential negative effects of utilizing hydraulic fracturing to produce oil.
    5·1 answer
  • HELP PLEASE Which type of power generation can produce carbon dioxide? solar hydroelectric coal wind
    6·2 answers
  • Formula for dicyanoargentate (I) ion​
    11·1 answer
  • H E L P M E<br> ashlynkhimehardinan<br><br> complete the sentence
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!