What has a larger mass, a mole of oxygen gas or a mole of neon gas?

Which statement justifies that phosphine (ph3) is a polar molecule?

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 %

Chromosome 17 is made of over million base pairs.