Which two formulas contain 4 atoms of hydrogen? A. 2H2CO3 B. H2O2 C. C2H6 D. C2H4O2

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

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 %

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest