3 years ago

4. What is the volume of a box that has a length of 50cm, a width of 20cm, and a height of 5 cm?

Chemistry

1 answer:

EastWind [94]3 years ago

4 0

5,000 cm3 (cubic centimeters)

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$\Delta{G^0} =-RT \ln \frac{[His]}{[His+]}$

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So, Applying in the equation as:-

$15\ kJ/mol=-0.008314\ kJ/Kmol\times 293\ K\times \ln \frac{[His]}{[His+]}$

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$15\ kJ/mol=-0.008314\ kJ/Kmol\times 293\ K\times \ln \frac{[His]}{[His+]}$

$\frac{[His]}{[His+]}=e^{\frac{15}{-0.008314\times 293}$

$\frac{[His]}{[His+]}=0.00211$

Also, considering:-

$pH=pKa+log\frac{[His]}{[His+]}$

Given that:- pH = 7.0

So, $7.0=pKa+log0.00211$

<u>pKa of the histidine = 9.67</u>

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