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jeyben [28]
3 years ago
9

BRAINLIESTT ASAP! PLEASE HELP :)

Chemistry
1 answer:
DanielleElmas [232]3 years ago
6 0

Answer:

The change during the burning of a match stick is a irreversible chemical change while the change when a liquid starts boiling is reversible chemical change.

You Helped Me Lol

Explanation:

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Can the work output of an engine be greater than the source of energy.
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no

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the output can never be greater than the input

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How can you use knowledge of a minerals chemical makeup or use?
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1. A student collected the following data for a fixed volume of gas: Temperature (⁰C) Pressure (mm of Hg) 10 726 20 750 40 800 7
zimovet [89]

Answer is: the missing pressure is 1088.66 mmHg.

Gay-Lussac's Law states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature.

p₁/T₁ = p₂/T₂.

p₁ = 960 mmHg; pressure of the gas.

T₁ = 100°C + 273.15.

T₁ = 373.15 K; temperature of the gas.

T₂ = 150°C + 273.15.

T₂ = 423.15 K.

p₂ = p₁T₂/T₁.

p₂ = 960 mmHg · 423.15 K / 373.15 K.

p₂ = 1088.66 mmHg.

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3 years ago
Define the term hydrate
Salsk061 [2.6K]

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a compound,typically a crystalline one,in which water molecules are chemically bound to another compound or an element

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What do ionic compounds form
Snowcat [4.5K]

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By the result of the formation of positive and negative ions, Ionic compounds are formed.

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Electrons are actually transferred from one atom to another to form rare gas electron structures for each ion. The atom which forms a positive ion loses electrons to the atom which gains electrons to form a negative ion. A compound is not stable unless the number of electrons which are lost and gained are equal

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