"When waves refract (move through a new material) such as from air--> water, waves change their speed." O True
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What is the mass of sodium in 3 moles of sodium chloride

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 %

How are isotopes of the same chemical element alike? how are they different?