Do all substances have the same chemical formula? why or why not?

Following a volcanic eruption, which event is usually the last one to be observed

How many moles are in 4.5 g of magnesium sulfate

The electrons which are primarily responsible for chemical bonds are: A) the outer s subshell B) the outer p subshell C) the valence electrons D) electrons with high ionization energy

During which step in the Can Crush Lab did water vapor force air from the can?

What mass will 2.5 L of chlorine gas be at STP?

Describe the development of the modern periodic table

How do you tell how many electrons an element wants to gain or lose?

An atom of element X has one more shell of electrons than an atom of beryllium, but it has one less valance electron than beryllium. Which element is X

Wich statement describes how basic coffee cup calorimeter works

How many atoms of potassium and how many atoms of oxygen must be present in the compound's formula?