Physical properties include: appearance, texture, color, boiling point, melting point, ect.
The molar concentration of the original HF solution : 0.342 M
Further explanation
Given
31.2 ml of 0.200 M NaOH
18.2 ml of HF
Required
The molar concentration of HF
Solution
Titration formula
M₁V₁n₁=M₂V₂n₂
n=acid/base valence (amount of H⁺/OH⁻, for NaOH and HF n =1)
Titrant = NaOH(1)
Titrate = HF(2)
Input the value :

Answer:
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Explanation:
Uses of Carbon in daily life
It makes up for 18% of the human body. Sugar, glucose, proteins etc are all made of it. ...
Carbon in its diamond form is used in jewellery. ...
Amorphous carbon is used to make inks and paints. ...
Graphite is used as the lead in your pencils. ...
One of the most important uses is carbon dating.
a refrigerant, in fire extinguishers,
for inflating life rafts and life jackets,
blasting coal,
foaming rubber and plastics,
promoting the growth of plants in greenhouses,
immobilizing animals before slaughter, and in carbonated beverages.
The answer is (3) The average velocity of the gas molecules increases. In the closed rigid cylinder, the volume of the gas and number of gas molecules will not change. The number of collision will increase.