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QveST [7]
2 years ago
11

Which of these is a common to all chemical changes

Chemistry
2 answers:
Kamila [148]2 years ago
5 0
C. A new substance is produced. All others are physical changes.
KiRa [710]2 years ago
3 0

Answer:

c

a new substance is produced

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A 4.0 L balloon has a pressure of 406 kPa. When the pressure increases to 2,030 kPa, what is the volume? *
elena-14-01-66 [18.8K]

The new volume when pressure increases to 2,030 kPa is 0.8L

BOYLE'S LAW:

The new volume of a gas can be calculated using Boyle's law equation:

P1V1 = P2V2

Where;

  1. P1 = initial pressure (kPa)
  2. P2 = final pressure (kPa)
  3. V1 = initial volume (L)
  4. V2 = final volume (L)

According to this question, a 4.0 L balloon has a pressure of 406 kPa. When the pressure increases to 2,030 kPa, the volume is calculated as:

406 × 4 = 2030 × V2

1624 = 2030V2

V2 = 1624 ÷ 2030

V2 = 0.8L

Therefore, the new volume when pressure increases to 2,030 kPa is 0.8L.

Learn more about Boyle's law calculations at: brainly.com/question/1437490?referrer=searchResults

3 0
2 years ago
Give three examples, from the lab, where potential energy was converted to kinetic energy.
GREYUIT [131]

Give 3 Examples of where potential energy was converted to knlinetic energy:

Curtain

A ball before moving

An apple from the tree then falling down

When the Curtains are still, we call the that potential energy. If you move the curtains around, that is kinetic energy

The ball is still, that is potential energy. Then the ball is moving, the is kinetic energy

There is a apple ganging from a tree, that is potential energy. That apple is fall, this is kinetic energy

Hope this helps

Don't type or write in the answer, I'm not sure what from the lab means. These are a few potential into kinetic energy I could have think of!

4 0
2 years ago
Weight is measured as the downward force of __________. a. gravity c. acceleration b. friction d. motion
Murljashka [212]
A. Gravity, hope this helps
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How many atoms of iodine are needed to react with one atom of magnesium?
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Answer:

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Explanation:

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3 years ago
I’ll mark BRAINLIEST! Please help!
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Answer:

theirs nothing there?!!!??!?!?!??!!?!?!?!?!??!?!??!?!?!??!?!

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