Grains of sugar have a greater than a solid cube of sugar of the same mass, and therefore will dissolve quicker than water. A) surface area
B) catalyst
C) temperature
D) concentration

A. Surface Area

Explanation:

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1.solid

2.carbon dioxide

3.helium

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.