Which sequence correctly places the elements in order of increasing ionization energy? A)H-Be-Al-Ga
B)H-Li-Na-K
C)0-5-Se-Te
D)Br-CIF

An observation that requires measurement is called quantitative observable or qualitative

How have the greenhouse gasses increased from the year 2000 to 2018

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury