Apolysaccharide of unknown structure was isolated, subjected to exhaustive methylation (which will modify free hydroxyls), and hydrolyzed (also see chap 8 #6). analysis of the products revealed the following three methylated sugars in the ratio 20: 1: 1. the sugars were 2,3,4-tri-o-methyl-d-glucose, 2,4-di-o-methyl-d-glucose, and 2,3,4,6-tetra-o-methyl-dglucose. what is the structure of the polysaccharide?

Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Ab c or d ? i’m not sure what the answer is