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GENERAL CHEMISTRY  (Hand out)

 

1.  DIMENSIONS:   Distance, Area, Volume, Time, Force, Density, Temperature, Velocity, 

                                   Acceleration,  specific heat.

 

      TIME:    1 Week = 7 days;  1 Day = 24 hrs;       1 Hour =  60 minutes;     1 Minute = 60 sec

 

  1. 2.      ENGLISH UNITS: 

                   Distance                                                  Volume                                            Mass

1 ft.  = 12 in          1 Mi = 5,280 ft.           1 qt. = 2pts.       1 gal. = 4 qt.            1 lb. = 16 Oz. (Mass)

1 yd. = 3 ft.                                                1 pt. = 16 0z. (Vol)                             1 Ton = 2000 lbs.

 

3.    METRIC SYSTEM UNITS:     Distance (Meters),       Volume (Liters)     Mass (Grams)

 

1 Mega =  106 = 1,000,000                1 deci =10 –1    = 0.1

1 Kilo  = 103   = 1,000                         1 centi =  10-2.  =0.01

1 Hecto  = 102  = 100                          1 milli =  10-3 = 0.001            1 ml = cm3

1 Deka   = 10= 10                            1 micro = 10-6 = 0.000001

                                                               1 nano = 10-9 = 0.000000001

 

4.     ENGLISH - METRIC

1 in = 2.54 cm

1 L = 1.06 qts.

1 lb =  453.6 g

 

5.    DENSITY:   d =  m/v    ( SOLVE FOR d, v, or m)

 

  1. TEMPERATURE CONVERSIONS:     F =  9/5 C  +  32:      C = 5/9(F-32);         

       K  =   C  +  273.14

 

7.   HEAT:     q = (mass )( DT)(specific heat)

 

8.   VELOCITY =  distance/time;         v =  d/t

 

9.   ACCELERATION  =  v/t        or       a =  d/t2

 

10.  FORCE :   F  = ma:   (F =  mass   X  acceleration; mass must be in Kg ;   

       acceleration in m/sto get unit in Newtons)

 

11.  NEWTONS =  Kg. m/s2

 

12.   VOLUME FORMULARS:   Vsphere= 4/3 pr3       Vcylinder   =pr2.h        Vrectangle= L  x  W  x  H

 

13. ISOTOPE NOTATION:     ABX   ( A = atomic weight of element;  B = No. of protons; No.

                   of  Protons  + No. of neutrons = A;   No. of protons = no. of electrons for neutral element.)

 

14.   Mols =   grams/formular weight:   or =  6.02  x  1023  items;

 

15.   Molaritiy:  Mols/Liter

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