What is a control group and is it always needed in an experiment?

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 %

Give the orbital configuration of the phosphorus (p) atom.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?