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Ghella [55]
3 years ago
12

PLEASE HELP! What type of rock is pumice? Describe how a pumice rock is likely to change over a long period of time.

Chemistry
1 answer:
Svetlanka [38]3 years ago
8 0

Answer:

Pumice is a light colored, porous igneous rock. It forms during volcanic eruption occurring under water. It is an aggregate of concrete. Because of their porous nature they float over the surface of water. With time the pumice rocks undergoes with several changes including weathering, erosion, and transportation. The extent of heat and pressure, making the sediments of the pumice rocks into metamorphic rocks distinct in the chemical and physical composition of the parent material.

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Answer:

Explanation:

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5) Molar mass of   Pb(C_{2}H_{3}O_{2})_{4}

= 207.2 + ((12x2) + (1x3) + (16x2))x4

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6) Both are the same.

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Solution 2 Molarity = 1.0/1.0 = 1 Mol/L

Molarities of the solutions are the same.

7 0
3 years ago
What coefficient for O2 demonstrates the law of conservation of mass?
olga2289 [7]

Answer:

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The coefficient for O is 2 and this is an example of a combustion reaction. With the help of the coefficient 2 infront of oxygen, this equation now demonstrates law of conservation of mass.

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Explanation:

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