Can anyone please help me with this question. A mass of an atom of element X is equivalent to the total mass of 7 hydrogen atoms. Give the name and symbol of the element represented by X.​

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

Light waves are as they pass through the

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate