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Rzqust [24]
3 years ago
15

is the following sentence true or false, in undisturb sedimentary rocks, the oldest layers are found on the bottom

Chemistry
1 answer:
Sauron [17]3 years ago
4 0

Answer:

True.

Explanation:

this is because undisturbed sedimentary rocks forms in layers.

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B.) When atoms share electrons/......
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Number of representative particles in 3 moles Sn
AURORKA [14]

Answer:

18.066 × 10²³ particles

Explanation:

Given data:

Number of moles of Sn = 3 mol

Number of representative particles = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

For 3 mole of Sn:

3 × 6.022 × 10²³ particles

18.066 × 10²³ particles

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Whenever energy is converted from one form to another, some of that energy is lost by being changed into heat.
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