The percentage composition of a compound expresses the amount (by weight) of constituent elements in of the
compound

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

Covalent bonds have a higher melting points than ionic bonds. true or false

Which of the following is true for a limiting reactant? it is the reactant whose atoms remain unbalanced in the equation. it is the reactant that produces a smaller amount of a product. it is the reactant that is left over after the reaction stops. it is the reactant that produces one mole of a product.