The average distance from the earth to the sun is an astronomical unit and is approximately 149,599,000 km how many nanometers is this

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.