I have prepared a caffeine stock solution of 0.075 M. What volume should we mix with distilled water in order to reach a standard solution of 0.0015 M and a final volume of 10 mL?
a) 0.2 mL
b) 112.5 mL
C) 50 ml
d) 2 mL

- decrease the number of plants and animals living in the water.

1 a

2 d

3 a

4 c

explanation:

dynamic equilibrium is the answer.

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i