{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

midterm+1+2008 (1)

midterm+1+2008 (1) - Chemical Engineering 140 Midterm 1(110...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemical Engineering 140 September 19, 2008 Midterm # 1 (110) Today (September 19, 2008) is the 80 th birthday of Adam West, who starred in the television series Batman from 1964-1968. Since you watched Batman reruns as a child, you decide to throw him a birthday party. The most important part of the party is serving punch. The first step in preparing punch is to mix powdered dye ( ρ d = 0.5 g / mL ) into a solution of punch concentrate ( ρ c =1.2 g / mL ) and water ( ρ w = 1.0 g / mL ). Dye, water, and concentrate must be mixed in a ratio of 6 grams of dye for every 4 L of solution, which consists of a 90:10 v/v mixture of water and concentrate. You decide to mix the punch in a continuous stirred tank of volume 30 L . To prevent overflow, the tank is filled to 2/3 of its maximum capacity during steady-state operation. Assume that mixing is perfect and instantaneous. The supply line can provide a maximum of 12 grams of dye into the tank per minute. You must prepare 200 L of punch for the party guests.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}