Why is it important to use deionized water in an experiment

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

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 %

An experimental procedure requires a 10 ml of acid to be dissolved