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3 years ago

Fill in the blank

Chemistry

1 answer:

Elena-2011 [213]3 years ago

7 0

Answer:

1. plasma; 2. qualitative; 3. matter;

Explanation:

PLASMA is a gaseous state of matter that contains appreciable numbers of electrically charged particles.

Diamond is harder than graphite. This is a QUALITATIVE observation.

Chemistry is defined as the study of MATTER.

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When a piston is pushed down on a cylinder, the pressure on the gas in the cylinder increases from 125 kPa to 375 kPa. The initi

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Answer:

The final volume is 1.1 L.

Explanation:

Given data:

Initial pressure of gas = 125 KPa

Final pressure of gas = 375 KPa

Initial volume = 3.3 L

Final volume = ?

Solution:

The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

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V₂ = final volume

Now we will put the values in formula,

P₁V₁ = P₂V₂

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V₂ = 412.5 KPa. L/375 Kpa

V₂ = 1.1 L

The volume of gas is reduced to the 1.1 L because of increasing pressure.

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38 An aluminum sample has a mass of 80.01 g and a density of 2.70 g/cm3. According to the data, to what number of significant fi

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