Why does magnesium burn with a white flame? what does it say about the electron transitions that take place?

Ineed with my science work! it’s due tomorrow!

Why doesn't heat added to water make the tempature rise above 100c

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 %