Atoms was determined to be 143 picometers. What is the percent error of this measured value?

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Which formula can be used to calculate the molar mass of hydrogen peroxide

When a septic tank backs up a goes in to clean it out