What kind of reaction is 2H202 → 2H20 + O2? O A. Decomposition
O B. Single-replacement
C. Double-replacement
O D. Synthesis

this reaction is so the answer should be A

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.