Question

please answer this above attachment​

Answer 1

Chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.

Answer 2

Step-by-step explanation:

⠀⠀⠀⠀⠀⠀$\tt \frac{ {7}^{8} }{ {7}^{5} \times {7}^{3} } \\ \\ \frac{ {7}^{8} }{ {7}^{5 + 3} } \\ \\ \frac{ \cancel{{7}^{8} }}{\cancel{ {7}^{8}} } \\ \\ 1$