What is catalyst?
What will be an ideal response?
It is an ingredient that speed up the hardening process
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A rigid, nonconducting tank with a volume of 4 
is divided into two unequal parts by a thin membrane. One side of the membrane, representing 1/3 of the tank, contains nitrogen gas at 6 bar and 100°C, and the other side, representing 2/3 of the tank, is evacuated. The membrane ruptures and the gas fills the tank.
(a) What is the final temperature of the gas? How much work is done? Is the process reversible?
(b) Describe a reversible process by which the gas can be returned to its initial state. How much work is done?
Assume nitrogen is an ideal gas for which 
and 
Row covers are used in cooler climates to increase temperature in the crop environment and to prevent infestation with insects earlier in the season
Indicate whether the statement is true or false
Dogs and cats cannot utilize facial expressions to express different emotional states
A. True B. False
What is a demand assessment and how is it conducted?
What will be an ideal response?