11.You and a friend find a rusty wire coat hanger near the beach. The wire has a much larger diameter than the wire in a new coat
hanger. Your friend says the wider wire disproves the Law of Conservation of
Mass. Explain why he is wrong?

What is the relation between concentration of reactants and the rate of chemical reaction?

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.