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3 years ago

How valence electrons does oxygen have.

Chemistry

2 answers:

lions [1.4K]3 years ago

8 0

Answer:

six valence electrons.

Explanation:

Valence electrons are the electrons in the outermost shell, or energy level, of an atom.

Kaylis [27]3 years ago

3 0

Answer:

six

Explanation:

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What type of change is this picture showing?

sladkih [1.3K]

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3 years ago

Look at the diagram of the solar system.

arlik [135]

Answer:

Retrograde Motion

Explanation:

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8. If a sample of chloroform is initially at 25°C, what is its final temperature if 150.0 g of chloroform

sashaice [31]

Answer:

The final temperature is 31.95° C.

Explanation:

Given that,

Initial temperature of a sample of chloroform, $T_i=25^{\circ} C$

Mass of chloroform, m = 150 g

It absorbs 1 kJ of heat, Q = 10³ J

The specific heat of chloroform, c = 00.96 J/gºC

We need to find the final temperature. The heat absorbed by an object in terms of specific heat is given by :

$Q=mc\Delta T\\\\Q=mc(T_f-T_i)\\\\\dfrac{Q}{mc}+T_i=T_f\\\\T_f=\dfrac{10^3}{150\times 0.96}+25\\\\=31.95^{\circ} C$

So, the final temperature is 31.95° C.

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3 years ago

the movement of molecules from an area of low concentration to an area of high concentration occurs in what transport?

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Movement of molecules from an area of higher concentration to one of lower concentration is called Diffusion

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Why is salt water intrusion a big problem in florida?

Schach [20]

Its leading to contaminated drinking water.

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3 years ago

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