Acertain liquid has a normal freezing point of and a freezing point depression constant . a solution is prepared by dissolving some ammonium chloride () in of . this solution freezes at . calculate the mass of that was dissolved. be sure your answer is rounded to the correct number of significiant digits.

Draw any one of the skeletal structures of a 2° alkyl bromide having the molecular formula of c6h13br and two stereogenic centers. indicate chirality by using wedge and hashed wedge notation. lone pairs do not need to be shown.

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa