Answer: if you examine the rock u might see that it has been in lava before or is dark from burns
Explanation: i dont know if im right but pls mark brainliest
Answer:decomposition reaction
Explanation:it is a decomposition reaction
7.55 x 6.02 x 10²³ = 4.55 x 10²⁴ atoms
What's the big M? Molecular weight or mol?