All hazard control and health requirements are enforced by the federal government true or false?

Who is better, messi or cristiano, i need this for a chemistry class. asap

What is the number of moles in 15.0 g ash3?

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )