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alexira [117]
3 years ago
9

16. ELECTRONS ALWAYS FILL THE LOWEST ENERGY LEVEL AVAILABLE FIRST

Chemistry
1 answer:
True [87]3 years ago
3 0

Answer:

Electrons in the outermost energy level of an atom are called VALENCE ELECTRONS.

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The first person who suggested that matter was made up of atoms was the Greek philosopher ____________________ .
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Answer:

Democritus

Explanation:

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3 years ago
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30 Pointss<br> Please make sure it is correct please
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Answer:

Option C is correct.

Explanation:

The graph shows birth and death rate in Japan. Birth rate has declined with the passage of time, as shown in the form of blue line whereas death rate is nearly constant, which can be seen as red line. More precisely, birth rate has decreased from ~30 to 10 whereas death rate is nearly ~10 all the times, although it was slightly decreased in the middle. Therefore, option C is the correct option...

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2 years ago
Consider the following chemical reaction: CO (g) + 2H2(g) ↔ CH3OH(g) At equilibrium in a particular experiment, the concentratio
grigory [225]

Answer : The equilibrium concentration of CH_3OH will be, (C) 2.82\times 10^{-1}

Explanation :  Given,

Equilibrium constant = 14.5

Concentration of CO at equilibrium = 0.15 M

Concentration of H_2 at equilibrium = 0.36 M

The balanced equilibrium reaction is,

CO(g)+2H_2(g)\rightleftharpoons CH_3OH(g)

The expression of equilibrium constant for the reaction will be:

K_c=\frac{[CH_3OH]}{[CO][H_2]^2}

Now put all the values in this expression, we get:

14.5=\frac{[CH_3OH]}{(0.15)\times (0.36)^2}

[CH_3OH]=2.82\times 10^{-1}M

Therefore, the equilibrium concentration of CH_3OH will be, (C) 2.82\times 10^{-1}

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3 years ago
A chemist has 2.0 mol of methanol (CH3OH). Molar mass of menthanol is 32.0g/mol. What is the mass, in grams, of the sample
Mademuasel [1]
2.0 mol x 32.0 g / 1 mol =
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What are the indicators for determining acids?
yulyashka [42]

Answer:

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Explanation:

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