What is the activation energy for the reaction in this energy diagram?

a.
+40 kj
b.
+60 kj
c.
+80 kj
d.
+20 kj
e.
+100 kj

What is a property of a double replacement reaction

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?

What is the chemical formula for dihydrogen monoxide