What is the abbreviation for liter

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg

What diagram shows the ionic compound of magnesium oxide

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line