9) What is the percent composition by mass of 64g oxygen in the compound MgSO4 (gram-
formula mass = 120. grams per mole)?
A)
20%
B)
27%
C)
46%
D)
53%

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

What are several ways to reduce the effect of friction