Answer:
0.735M
Explanation:
The balanced equation of reaction is:
HCl + KOH ===> KCl + H2O
Using titration equation of formula
CAVA/CBVB = NA/NB
Where NA is the number of mole of acid = 1 (from the balanced equation of reaction)
NB is the number of mole of base = 1 (from the balanced equation of reaction)
CA is the concentration of acid = 2.5M
CB is the concentration of base = to be calculated
VA is the volume of acid = 14.7mL
VB is the volume of base = 50mL
Substituting
2.5×14.7/CB×50 = 1/1
Therefore CB =2.5×50×1/14.7×1
CB= 0.735M
I would say that is true! good luck, hope this helps!
Answer:
- It only allows certain materials to leave the cell.
- It only allows certain materials to enter the cell.
- It helps the cell get rid of waste.
Explanation:
The cell membrane is a flexible membrane made up of proteins and lipids. It is selectively permeable (allowing only certain materials to enter or leave the cell) and plays a great role in selective absorption of materials (such as food nutrients, antibodies, waste products) entering or leaving the cell.
Also, it helps to protect the cell.
The solubility of salt usually increases when the temperature increases. Therefore, when the temperature decreases the salt becomes less soluble in water.