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A 80.0 mL sample of nitrous acid of unknown concentration is titrated with 36.2 mL of 1.45 M barium hydroxide. Determine the concentration of the acid solution.

Is the following statement true or false. While taking an exam, keep your eyes on the monitor as much as possible so it does not appear you are looking at material to help you with the exam.

Problem 2. Heat through the wall of an autoclave Metal medical instruments, glassware and media for microbial culture are usually sterilized in autoclaves. These equipment have rigid and insulated sterilization chambers where the materials are exposed to high temperatures and pressures.  The wall of the sterilization chamber in an autoclave is constructed of two 2-cm-thick steel plates (k = 15 W/m·K) 10 cm apart, with the space between them filled with fiberglass insulation (k = 0.035 W/m·K). This is illustrated in the figure below. If the temperature difference at the inner surface of the wall is 121°C and that at the outer surface is 30°C, Determine: The heat flux through the wall, in W/m2 The temperature at the boundary of the insulation and the outer steel plate, in °C

Male gonads.

formation and development of the oocyte (egg.)

Site of sperm deposition.

 A single, donut shaped gland in males about the size of a peach pit.  It encircles the urethra.  Secretions activate sperm and account for approximately 20-30% of the semen volume.

Female reproductive stem cells.

Marine teleosts are _________ (hyperosmolal/hyposmolal) [1] to their environment and _________ (gain/lose) [2] water by osmosis.

Members of Sarcopterygii have each of the following EXCEPT for