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3 years ago

Why do elements in group 8A (the noble gases) tend not to gain or lose electrons?

Chemistry

1 answer:

Neko [114]3 years ago

5 0

Answer:

The noble gases have 8 valence electrons in their outermost electron shell. In other words, they have full out shells. These elements are highly stable.

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Heart, 5 stars, Brainiest, and 40 coins if right! Answer needed ASAP

kicyunya [14]

Answer:

His kinetic energy is converted into potential energy.

Explanation:

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2 years ago

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0144 0.0144 M solution. The pH of the resulting solution i

alexdok [17]

Answer:

The value of dissociation constant of the monoprotic acid is $1.099\times 10^{-3}$ .

Explanation:

The pH of the solution = 2.46

$pH=-\log[H^+]$

$2.46=-\log[H^+]$

$[H^+]=0.003467 M$

$HA\rightleftharpoons H^++A^-$

Initially

0.0144 0 0

At equilibrium

(0.0144-x) x x

The expression if an dissociation constant is given by :

$K_a=\frac{[A^-][H^+]}{[HA]}$

$K_a=\frac{x\times x}{(0.0144-x)}$

$x=[H^+]=0.003467 M$

$K_a=\frac{0.003467 \times 0.003467 }{(0.0144-0.003467 )}$

$K_a=1.099\times 10^{-3}$

The value of dissociation constant of the monoprotic acid is $1.099\times 10^{-3}$ .

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3 years ago

Whose cell walls may contain cellulose can be plantlike, animal like or fungus

lapo4ka [179]

Answer:

I'm not sure

Explanation:

sorry wish that I did tho

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3 years ago

13. During photosynthesis, carbon dioxide and water combine according to the general

yKpoI14uk [10]

C is the answer hope the answer is right

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3 years ago

Susana heats up a sample of red crystals. While the sample is being heated, a gas is released and a blue powder is left after th

frutty [35]

Answer: Compound

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper $Cu$

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water $H_2O$

$2H_2O\rightarrow 2H_2+O_2$

Thus as it give that the red sample on being heated, a gas is released and a blue powder is left after the heating. Thus the given sample is a compound.

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3 years ago

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