Which of the following exists in solution 1. H+ion
2. H3O+ion
3. H-ion
4. H4O+ion

Pls explain why as well

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean

How many moles are contained in 5.6 l of h2 at stp