An unknown substance is found to contain 63% manganese and 37% Oxygen. What is the empirical formula for the unknown? A) Mn2O

B) MnO4

C) MnO

D) MnO2

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The image shows a process that releases nuclear energy which statement best identifies the process shown the process must be fusion because energy is released the process must be fusion because of have your nucleus formed a smaller nuclei the process must be fission because a large nucleus breaks into smaller nuclei the process must be fission because neutrons are formed

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.