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
harina [27]
3 years ago
12

Select the correct answer. Which is a chemical change? A. water boiling B. wood burning C. glass breaking D. ice melting E. mold

ing iron
Chemistry
2 answers:
Crank3 years ago
7 0

It would be option B. Wood burning!

If wood is burned in a fireplace, there is not wood anymore but ash.

Poof! The wood is no more!


asambeis [7]3 years ago
4 0

B. wood burning is a chemical change.

You might be interested in
Calculate the atomic mass of oxygen if the three common isotopes of oxygen have masses of 15.995 amu (99.759% abundance), 16.995
Valentin [98]

Answer:

16 amu

Explanation:

6 0
3 years ago
A room is a cube that measures 4 meters in each dimension. If the temperature changes from 10 C to 30 C, and the pressure decrea
Katen [24]

Answer:

More air will enter the room since the volume of the room increases.

Explanation:

We'll begin by calculating the initial volume (V₁) of the room. This can be obtained as follow

Length (L) of room = 4 m

Initial volume (V₁) =..?

V₁ = L³

V₁ = 4³

V₁ = 64 m³

Next, we shall determine if there is an increase in the volume of the room or not. This can be obtained as follow:

Data obtained from the question include:

Initial volume (V₁) = 64 m³

Initial temperature (T₁) = 10 °C + 273 = 283 K

Final temperature (T₂) = 30 °C + 373 = 303 K

Initial pressure (P₁) = 760 mmHg

Final pressure (P₂) = 718 mmHg

Final volume (V₂) =?

P₁V₁/T₁ = P₂V₂/T₂

760 × 64 / 283 = 718 × V₂ / 303

48640 / 283 = 718 × V₂ / 303

Cross multiply

283 × 718 × V₂ = 48640 × 303

203194 × V₂ = 14737920

Divide both side by 203194

V₂ = 14737920 / 203194

V₂ = 72.53 m³

SUMMARY

Initial volume (V₁) of room = 64 m³

Final volume (V₂) of room = 72.53 m³

From the calculations made above, we can see that the volume of the room increases from 64 m³ to 72.53 m³. Thus more air will enter the room since the volume of the room increases.

6 0
3 years ago
How many watts would equal 137 kilowatts?
natka813 [3]

Answer:

137,000 watts

Explanation:

1 kilowatt = 1000 watts

137 kilowatts = 1000 × 137 watts

= 137,000 watt

5 0
3 years ago
Read 2 more answers
What are tissues made up of?
Aleks [24]

Answer should be:

Cells

5 0
3 years ago
Read 2 more answers
During which process of the water cycle do water molecules absorb a great amount of solar energy? A. evaporation B. condensation
jolli1 [7]

When a man cumxs on a girls face, lets it dry, then peels it off and feeds it to her. This is called a mexican pancake

3 0
3 years ago
Other questions:
  • How do wet lands form
    9·2 answers
  • The formula for glucose is c6h12o6. what is the ratio of carbon atoms to hydrogen atoms in glucose?
    11·1 answer
  • Someone help with this please
    15·1 answer
  • 3. Which changes can reach dynamic equilibrium?
    14·1 answer
  • A reaction will be spontaneous if the change in Gibbs free energy ____
    10·1 answer
  • When water molecules gain a hydrogen ion, the ion that forms is _________.
    5·1 answer
  • If there are more shells does the nuclear charge decrease
    14·1 answer
  • A toothpaste contains sodium fluoride (NaF) What percentage of Fluoride is present.(4cs)
    15·1 answer
  • I will mark brainliest. Calculate the wavelength corresponding to a frequency of 98.8MHzl​
    5·1 answer
  • Write the condensed ground-state electron configurations of these transition metal ions, and state which are paramagnetic:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!