The direct-methanol fuel cell uses liquid oxygen as the fuel oxidized at the anode.
Answer the following statement true (T) or false (F)
False
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One hundred kilograms of water is heated from 10°C to 90°C. Its entropy change is nearest:
A) 116 kJ/K B) 104 kJ/K C) 96 kJ/K D) 78 kJ/K
For most plants the relationship between plant tissue concentration of a nutrient and the dry matter production of the plant is linear until toxicity begins to have an effect
Indicate whether the statement is true or false
A spring is a mechanical device often in the form of a ____ coil that yields by expansion or contraction due to ____ applied.
A. helical; pressure B. hexagonal; force C. helical; stress D. helical; force E. a, c, and d
Show how the parameters in the two equations are related.
Liquid/vapor saturation pressure 
is often represented as a function of temperature by the Antoine equation,
which can be written in the form:
Here, parameters a, b, and c are substance-specific constants. Suppose this equation is to be rewritten in the equivalent form:
