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
JulsSmile [24]
4 years ago
8

Which sentence describes an example of sublimation?

Chemistry
1 answer:
Strike441 [17]4 years ago
5 0
<span>An example of sublimation is when a dry ice changes to carbon dioxide when kept in an open container. Sublimation is a change from solid phase to gas phase without passing through the liquid state. In this example, it is clear that the dry ice is solid form and it evaporates as gas without passing through the liquid state.</span>
You might be interested in
Predict the gravitational and electrostatic forces between molecules of gases? Provide evidence for your prediction.
zmey [24]

the electrostatic forces are 10^{36} larger than the gravitational force

Explanation:

Let's do the calculation by using two molecules of hydrogen, each containing 2 atoms of hydrogen.

The gravitational force between the two molecules is given by:

F=\frac{G m_1 m_2}{r^2}

where

G=6.67\cdot 10^{-11} m^3 kg^{-1}s^{-2} is the gravitational constant

m1 and m2 are the masses of the two molecules: since they are identical,

m_1 = m_2 = 2m_p = 1.67\cdot 10^{-27} kg, twice the mass of the proton

r is the distance between the two  molecules

The force can be rewritten as

F_G=\frac{Gm_p^2}{r^2}

We can assume instead that electrostatic force between the two molecules is given by the interaction between the positively charged nuclei and the neatively charged electrons. Therefore,

F_E=\frac{kq_1 q_2}{r^2}

where

k=8.99\cdot 10^9 Nm^{-2}C^{-2} is the Coulomb's constant

q_1 = q_2 = 2e is the magnitude of the charge of each molecule, where

e=1.6\cdot 10^{-19}C is the fundamental charge

r is the distance between the two molecules

So the force can be  rewritten as

F_E=\frac{ke^2}{r^2}

Therefore, the ratio between the two forces is:

\frac{F_E}{F_G}=\frac{ke^2}{Gm_p^2}=\frac{(8.99\cdot 10^9)(1.6\cdot 10^{-19})^2}{(6.67\cdot 10^{-11})(1.67\cdot 10^{-27})^2}\sim 10^{36}

So, the electrostatic forces are 10^{36} larger than the gravitational force.

Learn more about electric force:

brainly.com/question/8960054

brainly.com/question/4273177

Learn more about gravitational force:

brainly.com/question/1724648

brainly.com/question/12785992

#LearnwithBrainly

6 0
3 years ago
The crust and uppermost mantle make up the rigid outer layer of Earth, which is called the _____.
Andru [333]

Here is your answer:


The crust and uppermost mantle make up the rigid outer layer of Earth, which is called the "lithosphere." The crust and the mantle makes up the lithosphere. The lithosphere is rigid outer part of the earth which contains the upper mantle and the crust.


Hope this helps!


<em>~Nonportrit</em>

6 0
3 years ago
Read 2 more answers
What is chemistry the study of?
IRINA_888 [86]
Chemistry is the study of substances—that is, elements and compounds.
8 0
3 years ago
Read 2 more answers
Write the orbital notation and electron configuration for the following elements. (Worksheet #2)
Mademuasel [1]

Answer:

the answer is B

Explanation:

4 0
3 years ago
Read 2 more answers
This leaf is green is A. an observation, B. a hypothesis. C. a theory As Corporation. All Rights Reseruar​
Trava [24]

Answer:

A. an observation

Explanation:

Because by saying that the leaf is green that is an observation on the leaf to tell what color it is.

Have a nice day/night :)

7 0
3 years ago
Other questions:
  • What does molarity measure the concentration of?
    12·2 answers
  • How many atoms are in 2.70 moles of iron (Fe) atoms? (2 points)
    11·1 answer
  • What BamH I and EcoR I fragments are created in the circular molecules? Why (or why not) can you locate each of these fragments
    13·1 answer
  • One or more substances changing into one or more substances is an example of a
    12·1 answer
  • a plant fertilizer contains 15% by mass nitrogen. in a container of soluble plant food. there are 10.0 oz of fertilizer . how ma
    8·1 answer
  • Which components of a galaxy move in circular patterns or revolve around a star?
    14·1 answer
  • How many nucleons are in an Iodine element? Okay
    6·1 answer
  • Please help! Will give Brainliest!
    13·2 answers
  • 3 What is the number located in the top right hand corner of the atomic symbol of an ion with 16 protons, 17 neutrons and 14 ele
    15·1 answer
  • How would I Determine the number of moles in 3.51 x 10^23 formula units of CaCl2
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!