OPEN BOOK TEST ON DATA HANDLING

The  First Year B.Sc. students of Biomedical science are answering the open book test during their regular lecture hour.

                                 While answering the students can discuss with the teacher.

The subject mainly deals with the preparation of solutions of different concentrations. I feel that why not we give this test to our B.Sc. Chemistry students? Please give me your comments I will send some more information. The test paper was like this.  

Open book test 1

Use scientific notation whenever appropriate.

            (eg. Write 2.3 x 10^-9 instead of 0.0000000023)

1.         Complete the equations:

(a) 4 ml =......... µl	(b) 4 mmol =..........  pmol	(c ) 4 mol =........... pmol
(d) 4 nmol =.........mmol	(e) 4 µg =............  mg	(f) 4 pg =............ ng

2.         Calculate the number of mols of glucose in:

            (a)  70 ml of 100 nM solution              (b)  0.25 ml of 100 mM solution 
 

            (c)  5 ml of 3 x 10-5 M solution          (d) 300 µl of 0.02 M solution    

3.        Express the following in molar (M = mol/litre) units:

(a) 50 pM:                     (b)130 pmol/ml:             (c ) 0.006 µM:  
     

(d) 15 mM:                    (e) 20 µmol/litre:             (f) 60 mmol/100 ml:

4.         Express 50 mM in units of:

(a)  mmol / litre:                   (b)  µmol /  µl:                        (c)  mmol /  µl:  

                                      

(d)  mmol / ml:                      (e)   µmol / ml:                       (f)   nmol / µl:

5.         Calculate the molarity of a solution containing:

(a)   130 mg of bovine serum albumin per ml  (Mr of bovine serum albumin = 65,000):

(b)  240 mg NaOH/5 ml   (Mr NaOH = 40):

 (c)  370 mg KCl/100 ml   (Mr KCl = 74):

6.  You have prepared a protein solution containing 100 mg/ml. The protein has a Mr of 50,000. 

      Express the concentration of this protein:

(a)  as % (w/v). Hint – this means the number of grams in 100 ml

solution.

(b)   in M units.