What mass of acetone (molar mass: 58g/mol) must be dissolved in 90 g of water in order to make the freezing point -5 degrees C?

answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.

you didnt put any of the following

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.