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2 years ago

1. Identify the seven diatomic elements and explain why they are different from the rest of the elements

Chemistry

2 answers:

allochka39001 [22]2 years ago

6 0

Answer:

Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Iodine, and Bromine.

Explanation:

All seven of these elements are very reactive. Because of this, they cannot be mono-atomic elements.

ozzi2 years ago

3 0

Answer:

hydrogen, nitrogen, oxygen, flourine, chlorine, iodine, bromine

Explanation:

they are very reactive and thus cannot exist as monoatomic elements

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Read 2 more answers

HC2H3O2 (aq) + H2O (l) ⇔ C2H3O2- (aq) + H3O+ (aq) Ka = 1.8 x 10-5

marin [14]

The concentration of [H3O⁺]=2.86 x 10⁻⁶ M

<h3>Further explanation</h3>

In general, the weak acid ionization reaction

HA (aq) ---> H⁺ (aq) + A⁻ (aq)

Ka's value

$\large {\boxed {\bold {Ka \: = \: \frac {[H ^ +] [A ^ -]} {[HA]}}}}$

Reaction

HC₂H₃O₂ (aq) + H₂O (l) ⇔ (aq) + H₃O⁺ (aq) Ka = 1.8 x 10⁻⁵

$\tt Ka=\dfrac{[C_2H_3O^{2-}[H_3O^+]]}{[HC_2H_3O_2]}}\\\\1.8\times 10^{-5}=\dfrac{0.22\times [H_3O^+]}{0.035}$

[H₃O⁺]=2.86 x 10⁻⁶ M

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