If the true power is 100 W and the reactive power is 100 VAR, the apparent power is ________

A) 100 VA B) 141 W C) 200 VA D) 141 VA


D

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The sour cream butter you made is a cultured dairy product. Does it taste

different than regular butter? How so? Why does it taste different?

What will be an ideal response?

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What is the diametral pitch of a gear with a pitch diameter of 8 and 24 teeth?

a. 3 b. 4 c. 1/3 d. 12

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This roof is similar to a gambrel roof, but has the angled lower roof on all four sides rather than just two, and can be used to help hide the height of an entire level of a structure:

A. mansard B. shed C. gable D. Dutch hip E. gambrel

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This problem concerns vapor-liquid equilibrium mixtures of compounds Q and W. We know that:

• The vapor pressure of pure compound Q is 0.5 bar at 300 K. • The vapor pressure of pure compound W is 1.0 bar at 300 K. A) If a liquid is composed of 40% Q and 60% W and at 300 K, give your best estimate of the bubble pressure and composition of the first bubble of vapor that WOULD be observed IF Q and W formed ideal liquid solutions. Q and W do not, in reality, form ideal solutions. In reality, for vapor liquid equilibrium at 300 K, there is an azeotrope at P=0.9 bar and T=300 K, in which the liquid and vapor phase both contain 40% Q. Use this fact—as well as the vapor pressure data given above—to answer questions B and C. B) Give your best estimate of the activity coefficients of Q and W in the azeotropic mixture at 300 K. C) Give your best estimate of the bubble pressure and composition of the first bubble of vapor in equilibrium with a liquid that is composed of 75% Q and 25% W at 300 K.

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