If you were building a device that used a chemical reaction to preserve food, like those used in refrigerators, what kinds of reactions would you experiment with?
a. exothermic
b. combustion
c. endothermic
d. spontaneous

Ethanol (c2h5oh) is produced from the fermentation of sucrose in the presence of enzymes. c12h22o11(aq) + h2o(g) 4 c2h5oh(l) + 4 co2(g) determine the theoretical yield and the percent yields of ethanol if 680. g sucrose undergoes fermentation and 326.5 g ethanol is obtained. theoretical _ g _ percent %

Na chemical reaction, activation energy increases the of the reactants. this outcome causes the particles to collide, which results in the of new products.

Suppose you increase your walking speed from 7 m/s to 15 m/s in a period of 1 s. what is your acceleration?