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4 years ago

Use the periodic table and the above figure.

Chemistry

2 answers:

nevsk [136]4 years ago

8 0

Answer:

Explanation:

Carbon is the 6th element of the periodic table and the atomic number is the same as the amount of electrons it has.

Tomtit [17]4 years ago

6 0

Answer:

Explanation:

observing the electronic configuration for the Carbon atom shown in the periodic table:

[He] 2s² 2p²

Therefore, it can be seen that at level s and level p it has two electrons per level to form chemical bonds, which gives it a total of 4 available electrons.

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A heterogeneous mixture can be made by mixing.........

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D baking soda and water because A B and C can all be separated while the baking soda will completely dissolve

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4 years ago

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The element with the greatest density is osmium, which has

Vinil7 [7]

Answer:

Mass is 725.46g/cm

Explanation:

Mass = density × volume = 22.6g/cm^3 × 32.1cm^2 = 725.46g/cm

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3 years ago

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Elena-2011 [213]

Answer:

This is not accurate we dont know what your asking us?

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3 years ago

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Properties of mixtures

makkiz [27]

Answer:The constituents of the mixture can be separated by physical methods. Boiling point and the melting point of the mixture depends upon the characteristic of the constituents. During the formation of a mixture, there is no change in the energy. All the states of matter (solid, liquid, gases) can combine to form mixtures.

Explanation:

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3 years ago

In the second footnote it was pointed out that mass and energy are alternate aspects of a single entity called mass-energy. The

Artemon [7]

Answer:

The corresponding mass change in this process is $1.9055\times 10^{-8} g$

Explanation:

$E= mc^2$ ,

where :

E is energy released with respect to mass

m is change mass

c is the speed of light.

2.096 g of hydrogen molecules combined with 96.000 g of oxygen molecules to form water and released energy E.

$E=1.715\times 10^3 kJ=1.715\times 10^6 J$

Mass change in this process = m

$1.715\times 10^6 J=m\times (3\times 10^8 m/s)^2$

$m=1.9055\times 10^{-11} kg=1.9055\times 10^{-8} g$

The change in mass calculated from Einstein equation is small that its effect on formation of product will be negligible.Hence, law of conservation of mass holds correct for chemical reactions.

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3 years ago