Show how to prepare 250mL of molar solution of sodium hydroxide​

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?