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zheka24 [161]
3 years ago
13

What does matter mean?

Chemistry
2 answers:
lozanna [386]3 years ago
7 0
Anything that has mass and occupies space.
Firlakuza [10]3 years ago
3 0
Matter is anything with mass/takes up space, such as the air you breathe, or the people around you.
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Scientists have established that some of the layers of Earth are solid, some are liquid, and some are semi-fluid. Explain how th
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They can determine the liquid layers and solid layers by seismic waves
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4 years ago
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An element is a main constituent of paper, diamond and clothes etc. It forms covalent bonds with itself and other elements:- (1)
zvonat [6]
The element that is the main constituent of paper, diamond, and clothes, among others is CARBON. It forms covalent bonds with itself and other elements. It is one of the most abundant and accessible elements on Earth. All organic compounds consist of at least one Carbon atom. 
7 0
3 years ago
4. A gas occupies 1.56 L at 2.00 atm. What will be the volume of this gas if the pressure becomes 4.00 atm?
tekilochka [14]

Answer:

<u>0.78 L</u>

Explanation:

From Boyle's Law :

P₁V₁ = P₂V₂

Here :

  • P₁ = 2.00 atm
  • V₁ = 1.56 L
  • P₂ = 4.00 L

Solving :

  • V₂ = P₁V₁ / P₂
  • V₂ = 2 x 1.56 / 4
  • V₂ = 1.56 / 2
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5 0
2 years ago
Calculate the standard potential for a cell that employs the over-all cell reaction: 2Al(s) + 3 I2(s)→2 Al+3 + 6 I- From reducti
Valentin [98]

Answer:

Explanation:

2Al(s) + 3 I₂(s)   →    2 Al⁺³    +     6 I⁻

Aluminium is oxidised and iodine is reduced .

so cell potential = Ereduction - Eoxidation

Al⁺³ + 3e = Al          -  1.66 V

I₂ + 2 e = 2 I⁻             0.54 V

=  .54 - ( - 1.66 )

= 1.66 + .54

= 2.2  V

8 0
3 years ago
1. Why do scientists use a standard measurement system?
Margaret [11]

Answer:

Explanation:

1.Scientists use a shared system for reporting measurements called the International System of Units (SI). We use common measurement systems because science involves a lot of replication to confirm results. The most common system used in science is the metric system.

2.m, kg, m^3

3. g value change

3 0
3 years ago
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