if it takes 0.5L of oxygen gas is kept in a cylinder under pressure to fill an evacuated 4.0L vessel in which the pressure is 0.98 atm, what was the initial pressure of the gas in the cylinder?

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

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.