What is the mass of a 4.50-μci 146c source? the half-life of 146c is 5730 yr. express your answer to three significant figures and include the appropriate units?

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Geothermal energy for industrial use is available almost anywhere. a. true b. false

Is a pencil falling to the floor anon contact force, a force, or a contact force