-34 - 15 =
A) -49 B) -19 C) 19 D) 49
A
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A(n) ____ may be used as a guide so that the torch can be dragged across the work surface.
A. nozzle tip B. nozzle insulator C. nozzle D. electrode tip
You set the pure component molar enthalpies of pure n-propanol and pure n-butanol equal to zero at T = 325 K, P = 0.1 MPa. What can you say about the molar enthalpy of an equimolar mixture at 325 K and 0.1 MPa?
A. Nothing. You cannot fix the reference molar enthalpy for both substances to zero at the same temperature and pressure. B. The molar enthalpy of the mixture is probably close to zero since the mixture is a good candidate to behave as an ideal solution. C. You need to know the heat capacity of the pure components to make a reasonable estimation of the molar enthalpy of the mixture. D. Since the heat of vaporization of both substances is near 42 kJ/mol, the solution enthalpy should be around 42 kJ/mol for an equimolar mixture. E. You must account for the increased number of available microstates to make an accurate estimation of the molar enthalpy.
The BCD equivalent of decimal 109 is ________
A) 0001 0000 1001BCD B) 0001 0000 1101BCD C) 1110 1011BCD D) 1110 1110 1100BCD
Materials specified on a roof plan include the roofing material, the type of underlayment, overhangs, drainage materials such as gutters and downspouts, vents and their location, and any major roof penetrations such as skylights and chimneys.
Answer the following statement true (T) or false (F)