How many moles of hydrogen peroxide (H 2 O 2 ) are used if 4 moles of water (H 2 O) are produced?

Evaluate this exponential expression,8. (2 + 3)2 – 42

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.