What is your question?

Rich Text Editor.To edit a paragraph's style, hit tab to get to the paragraph menu. From there you will be able to pick one style. Nothing defaults to paragraph.An inline formatting menu will show up when you select text. Hit tab to get into that menu.Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. You may navigate to these using the arrow keys inside of the editor and delete them with the delete or backspace key.

Toggle Paragraph Format Menu

Toggle Heading Menu

Toggle Lists Menu

Toggle Special Formats Menu

Paragraph (Removes paragraph style and sets to plain paragraph)

Heading 2Heading 3Heading 4Heading 5

Bulleted ListOrdered List

---

IndentOutdent

QuoteCode BlockSpoiler

Format as Bold

Format as Italic

Format as Strikethrough

Format as Inline Code

Format as Link

• Emoji Picker

  Emoji Picker
• Upload Image
• Insert Media

  Insert Media
• Upload File

Mathematics English History Science Physics Chemistry Geography Contemporary World Financial Education French Other

Science

Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 Grade 6 Secondary I Secondary II Secondary III Secondary IV Secondary V Postsecondary

Levels

Publish

Discussion List

• Verified by Alloprof
  HumbleArmadillo3023

  Verified by Alloprof

  Secondary III • 3yr.

  What is the difference between a motion transfer mechanism and a motion transformation mechanism? Can you give some examples? Thank you :)

  Science

  0

  1 answer
• Verified by Alloprof
  HumbleArmadillo3023

  Verified by Alloprof

  Secondary III • 3yr.

  How do you know which way a gear or wheel turns?

  Science

  0

  1 answer
• Verified by Alloprof
  HumbleArmadillo3023

  Verified by Alloprof

  Secondary III • 3yr.

  Hello.

  ...

  Also, I do not understand how the direction of a rotation can change or not, and how some systems are reversible and others not.

  Can you give me some examples? Thank you :)

  Science

  0

  1 answer
• Verified by Alloprof
  HumbleArmadillo3023

  Verified by Alloprof

  Secondary IV • 3yr.

  How do I calculate the volume of solvent to add in a dilution? I am given an initial concentration (0.25 g / L), the volume (14 ml) and I want the final concentration (0.20 g / L).

  ...

  Can you help me?? Thank you

  Science

  0

  1 answer
• Verified by Alloprof
  ShyMoon4957

  Verified by Alloprof

  Secondary III • 3yr.

  How do we compare different solutions according to their concentration?

  Science

  0

  1 answer
• Verified by Alloprof
  ShyMoon4957

  Verified by Alloprof

  Secondary III • 3yr.

  Hello! I have a homework assignment on dilution and I have 3 questions

  ...

  2) Does a dilution always lower the concentration?

  3) My homework says that my final solution has a volume of 100ml and a concentration of 0.24g / ml, then the initial solution has a volume of 75ml. How do I find the initial concentration ??

  Thanks in advance :)))

  Science

  0

  1 answer
• Verified by Alloprof
  ShyMoon4957

  Verified by Alloprof

  Secondary III • 3yr.

  Hello!

  ...

  Thanks for your help in advance!

  Science

  0

  1 answer
• Verified by Alloprof
  ShyMoon4957

  Verified by Alloprof

  Secondary III • 3yr.

  Good evening,

  ...

  Science

  0

  1 answer
• Verified by Alloprof
  ShyMoon4957

  Verified by Alloprof

  Secondary III • 3yr.

  Hello? I am lost here, is a colloid a heterogeneous or homogeneous mixture? Thank you

  Science

  0

  1 answer
• Verified by Alloprof
  ShyMoon4957

  Verified by Alloprof

  Secondary III • 3yr.

  Hello! Can you give me concrete examples of the different mixtures? (heterogeneous, homogeneous)

  ...

  Science

  0

  1 answer
• Verified by Alloprof
  FastFox1311

  Verified by Alloprof

  Secondary III • 3yr.

  Hello,

  ...

  Thanks a lot!

  Science

  0

  1 answer
• Verified by Alloprof
  FastFox1311

  Verified by Alloprof

  Secondary III • 3yr.

  Hello,

  ...

  Thanks a lot!

  Science

  0

  1 answer
• Verified by Alloprof
  ShyMoon4957

  Verified by Alloprof

  Secondary III • 3yr.

  Someone throws a huge 300 kg object into a 40,000 L swimming pool without any splashes being produced. The pool’s volume is measured afterwards, thus showing that it reaches 45,000 L. What is the density of the object? Help !?!

  Science

  0

  1 answer
• Verified by Alloprof
  FastFox1311

  Verified by Alloprof

  Secondary III • 3yr.

  Hello! Must I measure a solid with a ruler to determine its density ? I no longer remember :(

  Science

  0

  1 answer
• Verified by Alloprof
  SweetCrocodile1896

  Verified by Alloprof

  Secondary III • 3yr.

  Hi, how come oil floats on the water? Thank you for explaining this to me 🙂

  Science

  0

  1 answer
• Verified by Alloprof
  SweetCrocodile1896

  Verified by Alloprof

  Secondary III • 3yr.

  Hi!

  ...

  Science

  0

  1 answer
• Verified by Alloprof
  SweetCrocodile1896

  Verified by Alloprof

  Secondary III • 3yr.

  Hello,

  ...

  Thanks a lot!

  Science

  0

  1 answer
• Verified by Alloprof
  SweetCrocodile1896

  Verified by Alloprof

  Secondary III • 3yr.

  Hi! I have a lab this week on the density of gases, liquids, and solids.

  ...

  1) how do I measure the mass of a gas?

  2) how do I measure the volume of a solid?

  thanks in advance :))

  Science

  0

  1 answer
• Verified by Alloprof
  SweetCrocodile1896

  Verified by Alloprof

  Secondary III • 3yr.

  Are all the material properties advantageous? For example, why is fragility an advantage?

  Science

  0

  1 answer
• Verified by Alloprof
  QuietDragon2728

  Verified by Alloprof

  Secondary II • 3yr.

  Hello,

  ...

  Thanks a lot!

  Science

  0

  1 answer
• Verified by Alloprof
  QuietDragon2728

  Verified by Alloprof

  Secondary II • 3yr.

  Hello,

  ...

  Thanks a lot!

  Science

  0

  1 answer
• Verified by Alloprof
  QuietDragon2728

  Verified by Alloprof

  Secondary II • 3yr.

  Hello,

  ...

  Thanks a lot!

  Science

  0

  1 answer
• Verified by Alloprof
  QuietDragon2728

  Verified by Alloprof

  Secondary II • 3yr.

  Hi,

  ...

  Thanks

  Science

  0

  1 answer
• Verified by Alloprof
  QuietDragon2728

  Verified by Alloprof

  Secondary II • 3yr.

  How do you know if a particle is an atom or a molecule?I'm not sure I understand...

  Science

  0

  1 answer
• Verified by Alloprof
  QuietDragon2728

  Verified by Alloprof

  Secondary II • 3yr.

  Hello,

  ...

  Thank you so much!

  Science

  0

  1 answer
• Verified by Alloprof
  ZenZombie9054

  Verified by Alloprof

  Secondary III • 3yr.

  What is the difference between a force, a constraint, and the consequences of the effects of a force?

  Science

  0

  1 answer
• Verified by Alloprof
  ZenZombie9054

  Verified by Alloprof

  Secondary III • 3yr.

  Hey,

  ...

  What's the difference between linkage and guiding?

  Science

  0

  1 answer
• Verified by Alloprof
  QuietDragon2728

  Verified by Alloprof

  Secondary II • 3yr.

  What constitutes and doesn’t constitute a color change in a chemical reaction?

  Science

  0

  1 answer
• Verified by Alloprof
  AdorableMoose4991

  Verified by Alloprof

  Secondary I • 3yr.

  Good morning! I have a hard time distinguishing the lithosphere, the continental lithosphere, the oceanic lithosphere, landforms and the natural resources of the lithosphere. Can you help me?

  Science

  0

  1 answer
• Verified by Alloprof
  AdorableMoose4991

  Verified by Alloprof

  Secondary I • 3yr.

  hi! What distinguishes the biosphere, hydrosphere, lithosphere, and atmosphere?

  Science

  0

  1 answer