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1) What mass (in grams) of potassium acetate, KC2H3O2, must be added to 132 mL of 0.010 M acetic acid to form a buffer solution with a pH of 5.06?
(Ka (HC2H3O2)= 1.8 x 10-5
2) 11 mL of 0.0100 M NaOH are added to 25.0 mL of 0.0100 M acetic acid. What is the pH of the resulting solution?
3) 14 mL of 0.010 M NaOH are added to 29 mL of water. Determine the pH of the resulting solution.
4) 12 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.09 M C2H3O2-. What is the pH of the resulting solution?
what is the function of the tympanum in the frog? what similar structure can be found in humans?
One in every 685 children born in the chicoutimi area of quebec province has tyrosinemia. It is cause by having two copies of the receissive allele. Under the assumptions of Hardy-Weinberg equilibrium, calculate the value of q required to produce ..
One tank of gold fish is fed the normal quantity of food once a day, a second tank is fed twice a day, and a third tank four times a day during a six week study. The Fish's body fat is recorded. What is the standardizing variable.
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The lycophytes, sphenophytes, and ferns were once the giants of the plant kingdom and dominated the landscape. Explain why they are presently restricted to certain habitats and are relatively small in stature.
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Mendel crossed pea plants that were PP dd (purple flowers and short stems) with pp DD (white flowers and tall stems), and self-pollinated the F1 to obtain an F2. The two loci assort independently.
A woman has a rare abnormality of the eyelids called ptosis, which prevents her from opening her eyes completely. This condition is caused by a dominant allele, P. The woman's father had ptosis, but her mother had normal eyelids.
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