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s2008m [1.1K]
3 years ago
11

A unit of measurement that people agree to use is called a

Chemistry
1 answer:
likoan [24]3 years ago
8 0
SI Unit
I'm not 100% sure but I think that's right. Hope I helped you in any way.
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Answer quickly plzzzz 100 points
Paladinen [302]

Answer:

hydrogen  and oxygen

Explanation:

6 0
3 years ago
Read 2 more answers
a 5.00 L sample of helium expands to 12.0 L at which point the pressure is measured to be 0.720atm. what was the original pressu
stepan [7]

Answer:

The answer to your question is  Pressure 1 = 1.73 atm

Explanation:

Data

Volume 1 = 5 l

Pressure 1 = ?

Volume 2 = 12 l

Pressure 2 = 0.72 atm

Process

To solve this problem use Boyle's law to solve this problem

                 Pressure 1 x Volume 1 = Pressure 2 x Volume 2

-Solve for Pressure 1

                 Pressure 1 = Pressure 2 x Volume 2 / Volume 1

-Substitutiion

                 Pressure 1 = 0.72 x 12 / 5

-Simplification

                Pressure 1 = 8.64/5

-Result

                 Pressure 1 = 1.73 atm

5 0
3 years ago
Question 1
Tema [17]

Answer:

Synthesis Reaction

General Formulas and Concepts:

<u>Chemistry - Reactions</u>

  • Synthesis Reactions: A + B → AB
  • Decomposition Reactions: AB → A + B
  • Single-Replacement Reactions: A + BC → AB + C
  • Double-Replacement Reactions: AB + CD → AD + BC

Explanation:

<u>Step 1: Define</u>

RxN:   2Na + I₂ → 2NaI

<u>Step 2: Identify</u>

2Na + I₂ → 2NaI

A + B → AB

  • A = Na
  • B = I₂
  • C = NaI

Synthesis Reaction

7 0
3 years ago
If acid spills on your shoulder, you should use the
kozerog [31]

Answer:

If you spill an acid or base on your shoulder immediately wash well with water. Strong bases react with the oils in your shoulder to produce a soapy feeling layer. Rinse until well after that feeling is gone. Do not attempt to neutralize a spill on your skin.

7 0
3 years ago
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For any point on Earth's surface, its height above sea level is called its
Charra [1.4K]

Answer: Elevation

Explanation:

The altitude of a feature of the earth's surface is usually called its elevation, vertical distance from a datum plane, usually mean sea level to a point above the earth. Often used synonymously with altitude, elevation is the height on the earth's surface and altitude, the height in space above the surface.

4 0
3 years ago
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