Answer:
K (8.25/39)O(6.75/16)=K(.21)O(.42) this is the mole ratio or .21 mole K to .42 mole O. This would then be .21/.21 = 1 .42/.21 =2 or KO2. Does not make sense. Should be K2O
Explanation:
2.
move constantly
3.
solid - definite shape and volume
liquid - only definite volume
gas - none.
4.
The particles of gases have large interparticular space between them and they move constantly and sometimes these particles move away leading to change in volume but in case of solids the particles are packed tightly with low interparticular spaces and high interparticular force.
5.
shown in image above.
Answer:
D
Explanation:
chemical properties
I'm not sure abt it but hope that helps
Answer:
Explanation:
All buffer solutions have an effective range in which the buffer has a good regulation of pH.
This range is calculated by: pKa-1 < pH < pKa+1
The pH we need to control should be in that range. So for the phosphoric acid:
1) => 2.2-1< pH < 2.2+1 => 1.2<pH<3.2
2) => 7.2-1< pH < 7.2+1 => 6.2<pH<8.2
3) => 12.7-1< pH < 12.7+1 => 11.7<pH<13.7
For a pH=7.4 using a phosphate buffer we need to use diacid phosphate ()
Answer:
So the continental crust is typically defined as that portion of the outer rocky layer of the Earth that extends vertically from the surface (subaerial or submarine) to the Mohorovicic discontinuity (or Moho) and laterally to the slope break on continental shelves
Explanation: