.An electron in the hydrogen atom makes a transition from a principal energy state ni to an energy state n=4. If the photon emitted has a wavelength of 734 nm, calculate the initial energy state ni? Constants: h= 6.63x10-34 J. S, C= 3x10 8 m/s and RH = 2.18x10-18 J.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

What statement goes against the kinetic theory of gases

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.