Electromagnetic energy travels through space in waves. the electromagnetic spectrum includes all electromagnetic waves, arranged according to frequency and wavelength. which of these is an example of an electromagnetic wave?
sound wave
gravitational wave
radio wave
ocean wave

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

Which of the following electromagnetic waves can create ions?

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)