Given the energy levels of electrons in a hydrogen atom (table), rank the photons emitted by the following electron transitions from longest to shortest wavelength.

n=4 to n=3

n=4 to n=2

n=2 to n=1

n=3 to n=1

Calculate the concentration of sodium ions made by diluting 45.0 mL of a 0.748 M solution of sodium sulfide to a total volume of 250.0 mL

Convert 1.6 x 10^-20 moles of Titanium to g mole how many atoms of Ti do you have?

Explain why saltwater is considered a mixture

How does raising the temperature affect the rate of reaction

Balance the redox reaction equation (occurring in acidic solution) and choose the correct coefficients for each reactant and product.__pbo2 (s) + __sn (s) + __h + (aq) →__pb2 + (aq) + __sn2 + (aq) + __h2o (l)

The flame from my candle gives off black smoke heat and light what type of changes do these indicate

Which one of the following processes results in a decrease in the number of neutrons? corrosion electron capture gamma emission positron emission alpha emission

Calculate the root mean square velocity of F2, Cl2, and Br2 at 304 K.

The total pressure inside a 1.62 cylinder kept at 35°C is 1.15 atm. If the volume of the cylinder drops to 0.74 L and the temperature remains the same, what is the new pressure inside the cylinder?

What is difference between tempering and aging?