What is the abbreviation for each of the following?

pound:square
foot:inch
:
each:gallon
:
penny:number
:



What will be an ideal response?


ANS:pound
: (lb)
square foot: (sq ft)
inch: (" or in)
each: (ea)
gallon: (gal)
penny: (d)
number: (no. or #)

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In a chemical reaction run at a certain temperature, the concentration C of a certain reactant at time t is given by where is the initial concentration and k is the rate constant. Assume the initial concentration is known to be 0.04 mol/L exactly. Assume that time is measured with negligible uncertainty.

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