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labwork [276]
1 year ago
14

Someone please help me figure out the significant figure

Chemistry
1 answer:
Neporo4naja [7]1 year ago
4 0
I believe the answer is 15kg since after that there is 16kg and before there is 14kg
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What is Ka for HCN(aq) H+(aq)+CN-(aq)?​
snow_lady [41]
<h3>\tt C.~Ka=\dfrac{[H^+][CN^-]}{[HCN]}</h3><h3>Further explanation  </h3>

According to Arrhenius, acids are substances which, when dissolved in water, release Hions.  

An HₓY acid in water will ionize:  

HₓY (aq) ⇒ xH⁺ (aq) + Yˣ- (aq)  

In general, the weak acid ionization reaction  

HA (aq) ⇒ H⁺ (aq) + A⁻ (aq)  

Ka's value  

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

So for HCN

HCN(aq)⇒H⁺(aq)+CN⁻(aq)

\tt Ka=\dfrac{[H^+][CN^-]}{[HCN]}

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