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Zigmanuir [339]
4 years ago
8

PLEASE HURRY !! WILL GIVE BRAINLIEST

Chemistry
2 answers:
lozanna [386]4 years ago
8 0
I think it would be experiments
Montano1993 [528]4 years ago
7 0
<span> </span><span>The results of new evidence can lead to changes in scientific knowledge.</span>
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The answer is "5.4".

Explanation:

BoH + HCL =BCL +H_2o \\\\At eq \\\\N_1V_1=N_2V_2 \\\\v_2=20 \ ml\\\\[BCL]=\frac{20 \times 0.08}{20+20}=0.04\\\\pH = \frac{1}{2} [pkw - pk_b - \log e]\\\\pk_b = 2 pH - Pkw + \Log C\\\\pK_b=5.4

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