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3 years ago

12

Which statement is NOT TRUE about elements in group 16?

1 answer:

Airida [17]3 years ago

4 0

The most suitable answer is C becuase they would gain two elctrons to atain that stable OCTET thus becoming a anion with a charge of -2 and by virtue oxidation states of -2. There is however an exception with oxygen in two cases. But I still remain that the best answer would be C

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Is the maximum population that a given area can support

Anastaziya [24]

Answer:

Carry capacity

Explanation:

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3 years ago

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Consider the reaction: N2(g) 2 O2(g)N2O4(g) Write the equilibrium constant for this reaction in terms of the equilibrium constan

Valentin [98]

Answer : The equilibrium constant for this reaction is, $K=\frac{(K_b)^2}{K_a}$

Explanation :

The given main chemical reaction is:

$N_2(g)+2O_2(g)\rightarrow N_2O_4(g)$ ; $K$

The intermediate reactions are:

(1) $N_2O_4(g)\rightarrow 2NO_2(g)$ ; $K_a$

(2) $\frac{1}{2}N_2(g)+O_2(g)\rightarrow NO_2(g)$ ; $K_b$

We are reversing reaction 1 and multiplying reaction 2 by 2 and then adding both reaction, we get:

(1) $2NO_2(g)\rightarrow N_2O_4(g)$ ; $\frac{1}{K_a}$

(2) $N_2(g)+2O_2(g)\rightarrow 2NO_2(g)$ ; $(K_b)^2$

Thus, the equilibrium constant for this reaction will be:

$K=\frac{1}{K_a}\times (K_b)^2$

$K=\frac{(K_b)^2}{K_a}$

Thus, the equilibrium constant for this reaction is, $K=\frac{(K_b)^2}{K_a}$

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3 years ago

The number of positive charges in the nucleus of an atom is equal to: its mass number its atomic number Avogadro's number its at

makkiz [27]

Answer:

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Explanation:

the mass number/atomic mass is how many protons and neutrons are combined in an element. But, the atomic number is just protons.

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Answer: avogadros number/constant

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2 years ago

What is the answer ?

Fantom [35]

The answer is C Does it propaget

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