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CHM : Solution set
I need the following questions answered in the next 45 minutes Thanks
Sucrose is hydrolyzed to what two monosaccharides?1. glucose and fructose2. glucose and galactose3. galactose and fructose4. glucose and maltose
All chiral D-sugars rotate plane-polarized light1. clockwise2. counterclockwise3. in a direction that cannot be predicted but must be experimentally determined4. not at all as they are optically inactive
Stereoisomeric aldohexoses that differ in configuration at only a single carbon are1. epimers2. meso3. enantiomers4. anomers
When a monosaccharide reacts to give the pyranose form from its open-chain form, how many distinct pyranose forms are possible?1. 12. 23. 2n where "n" is the number of carbons present4. 4
Cellulose and amylose are1. 1,4' linked polymers of D-glucose which differ in the stereochemistry of this linkage2. 1, 6' linked polymers of D-glucose which differ in the stereochemistry of this linkage.3. synonyms of the only polymeric form of D-glucose4. polymers of totally different monosaccharides
In an airplane, a gas sample occurs at a volume of 1.5 L at 760.0 torr. Suppose, while flying, the airplane loses pressure and the volume of the gas increases to 11.40 L.
When M2S3(s) is heated in air, it is converted to MO2(s). A 3.700-g sample of M2S3(s) shows a decrease in mass of 0.207 g when it is heated in air.
if a 2.743g sample of MgSO4 7H2O were heated strongly, what would be the expected mass of the cooled dehydrated salt? (use M=246.471g mol-1 as the molar mass of MgSO4 7H2O.
Heat is lost to the styrofoam calorimeter. Assuming a 6.22 C temperature change for the reaction of HCl(aq) with NaOH(aq), calculate the heat loss to the inner 2.35-g styrofoam cup. The specific heat of styrofoam is 1.34 J/gC.
A sealed-end water manometer attached to an air duct reads 1598 cm. An open-end water manometer attached to the same duct reads 556.2 cm.
Using a solution of (HOC 2 H 2 )3NHCl, solution in which Kb, ((HOC 2 H 2 )3N) = 5.9 × 10 -7 then determine what is the pH of a 0.010 M triethanolammonium chloride,
What is the limiting reactant? b) How many grams of magnesium hydroxide can be theoretically obtained? c) If only 2.009g of magnesium hydroxide are obtained, what is the percent yield of the reaction?
Distinguishing between Organic Molecules, What chemical tests might be used to distinguish between: pentanal and 2-pentanone, between benzyl alcohol and diphenylmethanol?
A cylinder with a moveable piston contains 0.84 mol of gas and has a volume of 328 mL. What will its volume be if an additional 0.27 mol of gas is added to the cylinder? (Assume constant temperature and pressure.)
At 20 degrees C the vapor pressure of pure methanol (CH3OH) is 89.0 torr and of pure water (H2O) is 17.5 torr. A solution of methanol and water has a total vapor pressure of 52.9 torr at 20 degrees C.
An aqueous solution contains 4.90% NH3 (ammonia) by mass. The density of the aqueous ammonia is 0.979 g/mL. What is the molarity of NH3 in the solution?
Determine what volume of N 2 is released at 0.915atm of pressure and at the temperature of 25 degree celcius from a tank full of liquid N 2 ? (d=0.808g/mL)
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