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Vladimir79 [104]
2 years ago
8

Which substance can not be decomposed by a chemical change? (1) AlCl3 (3) HI (2) H2O (4) Cu

Chemistry
2 answers:
user100 [1]2 years ago
5 0
Cooper is the substance that can't be decomposed by a chemical chAnge. So 4)
adoni [48]2 years ago
3 0
<span>The answer I choose is option (4) Copper</span>
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A balloon inflated in a room at 24 degree celsius has a volume of 4 L. The balloon is then heated to a temperature of 58 degree
WITCHER [35]

Answer: The new volume of the balloon will be 4.45L

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2 years ago
Identify each property below as more characteristic of a metal or a nonmetal.
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2 years ago
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The radius of a lithium atom is 130 picometers, and the radius of a fluorine atom is 60 picometers. The radius of a lithium ion,
natali 33 [55]

Answer:

A positive ions is always smaller than the corresponding atom.

A negative ion is always larger than the corresponding atom.

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A negative ion is formed by addition of more electrons to the electron cloud hence it spreads out. Interelectronic repulsion accounts for the larger size of the negative ion.

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2 years ago
Why does a solid change to a liquid when heat is added
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Ice Station Bravo near the North Pole launched a helium-filled balloon to check atmospheric conditions. At sea level (1.0 atm) w
Reika [66]

Answer:

12.9 m³ is the new volume

Explanation:

As the temperature keeps on constant, and the moles of the gas remains constant too, if we decrease the pressure, the volume will increase.  If the volume is decreased, pressure will be higher.

The relation is this: P₁ . V₁  = P₂  . V₂

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8 0
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