Which statements are true about balancing chemical reactions? Check all that apply.
A. Balancing reactions should not involve trial and error.
B. Atoms that are in only one of the reactants and only one of the
products should be done first.
C. Single atoms should be done last.
D. At the end, the coefficients should be the biggest numbers
possible.

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

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?