(A)The following figure is the structure of Glycerin molecule. There is a certain functional group present in this molecule. Answer the following questions about this molecule. CH2OH Н- ОН ČH2OH a) Name the functional group that is present in the molecule? b) Calculate the total number of bonds present in this molecule. B) A standard solution of glucose of volume 2 liters having Molarity 2.5M was prepared in the chemistry laboratory. Later, this solution was diluted to change its concentration to 1.25M. How much water was needed to bring about this change?

The potassium-ion concentration in blood plasma is about 5.0 * 10-3 M, whereas the concentration in muscle-cell fluid is much greater (0.15 M ). The plasma and intracellular fluid are separated by the cell membrane, which we assume is permeable only to K+. (a) What is ∆G for the transfer of 1 mol of K+ from blood plasma to the cellular fluid at body temperature 37 °C?

The normal freezing point of ethanol (CH3CH2OH) is -117.300 ºC.  In a laboratory experiment, students synthesized a new compound and found that when 10.60 grams of this compound were dissolved in 241.0 grams of ethanol, the new freezing point of the solution was -117.778 ºC. The compound was also found to be nonvolatile and a non-electrolyte. What is the molar mass (in g/mol) they determined for this compound? (Kfp of ethanol = -1.99 ºC/m)

Sucrose (C12H22O11), which is commonly known as table sugar, reacts in dilute acid solutions to form two simpler sugars, glucose and fructose, both of which have the formula C6H12O6:   C12H22O11 (aq) + H2O (l) → C6H12O6 (aq) + C6H12O6 (aq) Sucrose                          Glucose             Fructose   At 23 o C and in a 0.5 M HCl, the following data were obtained for the disappearance of sucrose Time (min) [C12H22O11] (M) 0 0.316 39 0.274 80 0.238 140 0.19 210 0.146   Is this reaction first order or second order? What is the value of the rate constant?