Please show all work neatly Ldeprenyl C13H17NHCl prevents th

Please show all work, neatly.

L-deprenyl (C_13H_17NHCl) prevents the metabolism of dopamine in the brain. With increased dopamine availability in the brain, the symptoms of Parkinson\'s disease may subside. Assume a dose of L-deprenyl of 140(microgram/day.kg patient weight) for treating Parkinson\'s patients. In one preparation, 10 mg of Ldeprenyl is dissolved In 10 mL water. Assume water density to be 1 gm/mL Calculate the following mass fraction of L-deprenyl the mole fraction of L-deprenyl. Number of molecules of L- deprenyl The average MW of the solution.

Solution

Ans . a) Given mass of L-deprenyl=10mg=0.01g

Volume of water =10 ml

density of water=1g/ml

now volumeof water = mass of water / density

         10=mass of water/1

mass of water=10g

mass fraction of L-deprenyl= mass of L-deprenyl / mass of water + mass of L-deprenyl

                                   =    0.01/10.01

                                   = 0.00099 g

Ans b) The mole fraction of L-deprenyl is given by

X_A = W_a/ M_a / W_a /M_a + W_b +M_b

     Where W_a   = mass of L-deprenyl   W_b = mass of water

                  M_a = molar mass of L-deprenyl W_b = molar mass of water

X_a = 0.01/187.281 / 0.01/187.281 +10/18

      = 0.000953

Ans c) 1 mole of L-deprenyl =187.281g=6.023 x 10²³ molecules

10 gm of L-deprenyl contains = 6.023 x 10²³ x 10 / 187.281 molecules

                                            = 0.0322 x 10²⁴ molecules

Ans d) average MW of the solution is 187.281 g = molar mass of L-deprenyl