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【简答题】
It is a discrete variable whose values can only be 0 or 1. For example, there is a variable X that used to determine whether a student has passed the exam. When the score of one student is smaller than 60, the X equals to 0 which means the student has not passed, otherwise, X equals to 1 which means the student has passed.
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【简答题】3–15 A piston–cylinder device initially contains 50 L of liquid water at 40°C and 200 kPa. Heat is transferred to the water at constant pressure until the entire liquid is vaporized. (a) What is the m...
【单选题】Under the conditions existing in biological systems (including constant temperature and pressure), changes in free energy, enthalpy, and entropy are related to each other quantitatively by the equatio...
A.
△ H – T ÷ △ S
B.
△ H – T △ S
C.
△ S – T ÷ △H
D.
△ S – T △ H
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