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Elenna [48]
2 years ago
12

Mendel crossed tall pea plants with short pea plants. The offspring were all tall plants.

Chemistry
1 answer:
kvv77 [185]2 years ago
4 0

The recessive allele is the short pea plant gene.

The dominant allele is the tall pea plant gene

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Calculate the ph of a buffer that is 0.145 m hc2h3o2 and 0.202 m kc2h3o2. The ka for hc2h3o2 is 1.8 × 10-5.
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Answer:

pH = 4.8

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A buffer is formed by a weak acid (0.145 M HC₂H₃O₂) and its conjugate base (0.202 M C₂H₃O₂⁻ coming from 0.202 M KC₂H₃O₂). The pH of a buffer system can be calculated using Henderson-Hasselbalch's equation.

pH = pKa + log\frac{[base]}{[acid]} \\pH = -log(1.8 \times 10^{-5} )+log(\frac{0.202M}{0.145M} )\\pH=4.8

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