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
Natalija [7]
3 years ago
9

Water is made of two hydrogen atoms and one oxygen atom bonded together. Julia is describing how water undergoes a physical chan

ge when it boils. She says that the particles shift to be farther apart and that the oxygen and hydrogen separate. She also says that the total mass of the steam is the same as the initial water, and that heat energy was required to cause the change. She finishes her description by saying that the steam can be turned back into water if it is cooled. Which is the mistake in her description?
Physics
2 answers:
xxMikexx [17]3 years ago
7 0
She used steam instead of vapor. A gases liquid such as boiled water is a vapor.

KengaRu [80]3 years ago
5 0

Answer:

the oxygen and hydrogen separate

Explanation:

Julio is correct on everything else except that during the boiling of water, the oxygen atom separates from the two hydrogen atoms in each water molecule. Boiling is a physical change. Only physical properties of water change i.e changing from being a liquid to a guess. Its chemical properties remain the same. It is still water, H20. Its chemistry must not be changed in a a physical change like boiling. Once oxygens separate from hydrogens that and one oxygen atom bonded together. Julia is describing how water undergoes a physical change when it boils. She says that the particles shift to be farther  is an entirely different substance, not water.

You might be interested in
Dolphin echolocation is similar to ultrasound. Reflected sound waves
s344n2d4d5 [400]

Answer:

Waves with high frequencies have shorter wavelengths that work better  than low frequency waves for successful echolocation.

Explanation:

To understand why high-frequency waves work better  than low frequency waves for successful echolocation, first we have to understand the relation between frequency and wavelength.

The relation between frequency and wavelength is given by

λ = c/f

Where λ is wavelength, c is the speed of light and f is the frequency.

Since the speed of light is constant, the wavelength and frequency are inversely related.

So that means high frequency waves have shorter wavelengths, which is the very reason for the successful echolocation because waves having shorter wavelength are more likely to reach and hit the target and then reflect back to the dolphin to form an image of the object.

Thus, waves with high frequencies have shorter wavelengths that work better  than low frequency waves for successful echolocation.

3 0
3 years ago
If the mass of a 1.8 g paperclip was able to be completely converted to energy, how much energy would you obtain?
Anton [14]

Answer:

E=1.62\times 10^{14}\ J

Explanation:

Given that,

The mass of the paperclip, m = 1.8 g = 0.0018 kg

We need to find the energy obtained. The relation between mass and energy is given by :

E=mc^2

Where

c is the speed of light

So,

E=0.0018\times (3\times 10^8)^2\\\\E=1.62\times 10^{14}\ J

So, the energy obtained is 1.62\times 10^{14}\ J.

7 0
2 years ago
Which components of an atom are found outside of the nucleus
butalik [34]
Electrons are found outside of the nucleus.
3 0
3 years ago
Read 2 more answers
How do you find circular motion?​
MatroZZZ [7]

Answer:

Explanation:

By multiplying the rotational frequency with the circumference we can determine the average speed of the object. The circular velocity formula is expressed as, vc = 2 πr / T. Where in, r denotes the radius of the circular orbit. T is time period.

6 0
3 years ago
Read 2 more answers
Two air track carts move along an air track towards each other. Cart A has a mass of 450 g and moves toward the right with a spe
ra1l [238]

Answer:

0.465 kgm/s

Explanation:

Given that

Mass of the cart A, m1 = 450 g

Speed of the cart A, v1 = 0.85 m/s

Mass of the cart B, m2 = 300 g

Speed of the cart B, v2 = 1.12 m/s

Now, using the law of conservation of momentum.

It is worthy of note that our cart B is moving in opposite directions to A

m1v1 + m2v2 =

(450 * 0.85) - (300 * 1.12) =

382.5 - 336 =

46.5 gm/s

If we convert to kg, we have

46.5 / 100 = 0.465 kgm/s

Thus, the total momentum of the system is 0.465 kgm/s

6 0
3 years ago
Other questions:
  • John traveled East at 10 m/s for ten
    15·1 answer
  • Table salt is blank mixed with other compunds
    6·1 answer
  • Average velocity is different than average speed because calculating average velocity involves ?
    6·2 answers
  • Why is declaring faith the first of the five pillars of Islam?
    8·1 answer
  • What is the smallest particle of the element iron (fe) that can be as iron ?
    9·1 answer
  • Draw the vector C⃗ =1.5A⃗ −3B⃗ .
    14·1 answer
  • Which of the following prefixes represents the biggest number?
    14·1 answer
  • Helium does not usually react with other substances. does this mean that helium has no chemical reactions
    5·1 answer
  • Newton's third law states that forces always occur in
    8·2 answers
  • A 5.0 kg block is placed on a 30 degree friction-less incline on the surface of earth. What will be the acceleration of the bloc
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!