A.fluoride
Fluoride helps to prevent tooth decay
Initial volume of the balloon =
= 348 mL
Initial temperature of the balloon
= 
Final volume of the balloon
= 322 mL
Final temperature of the balloon = 
According to Charles law, volume of an ideal gas is directly proportional to the temperature at constant pressure.

On plugging in the values,


Therefore, the temperature of the freezer is 276 K
Answer:
well there is no chose here is my best option i would chose
1 Electronegativity is the ability of an atom to attract electrons.
Explanation:
Density is the measure of a mass per unit volume of a material substance
density= Mass/volume
The unit of density is g/cm^3