Pin #____ in a 555 timer is the control voltage pin.

a. 3
b. 4
c. 5
d. 6


c. 5

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To determine the proper measurements for a floor, always refer to the _____.

a. building specifications b. building code c. architect's notes d. scale on the construction drawings

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The ____ sensor utilizes a focusing lens to create a focal point.

A. retro-reflective B. broad-focus thru-beam C. fixed-focus reflective D. fixed-focus diffuse

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Whenever an electrical current flows, ____ forces are being created.

a. alternating b. piezoelectric c. energy d. magnetic

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Which of the following would you NOT expect to increase the total number of moles of C?

The reaction A + B ? C occurs in the vapor phase. It is an exothermic reaction. It is beneficial to carry out the reaction in the presence of liquid water, because C is somewhat soluble in water while A and B are effectively insoluble. The Henry’s Law constant for C in water increases as the temperature increases. We are interested in maximizing the total number of moles of C in the system, regardless of whether the C is in the liquid or vapor phase. A. Increasing the pressure at constant temperature. B. Increasing the number of moles of water while leaving P and T constant. C. Increasing the temperature at constant pressure. D. Decreasing the temperature at constant pressure. E. It is impossible to answer the question without specific values of H and K.

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