The electron in an (unbound) hydrogen atom (h(g)) is excited from the ground state to the n=3 state. which of the following statements are true and which are false. 1) the first excited state corresponds to n=3. 2) the wavelength of light emitted when the electron drops from n=3 to n=2 is shorter than the wavelength of light emitted if the electron falls from n=3 to n=1. 3) it takes more energy to ionize the electron from n=3 than it does from the ground state. 4) the wavelength of the light emitted when the electron returns to the ground state from n=3 is larger than the wavelength of light absorbed to go from n=1 to n=3. 5) the electron is farther from the nucleus on average in the n=3 state than in the ground state.

1) FALSE

2) TRUE

3) FALSE

4) FALSE

5) TRUE

Explanation:

1) The first excited state corresponds to n=3. FALSE. The ground state corresponds to n=1 and first excited state corresponds to n=2.

2) The wavelength of light emitted when the electron drops from n=3 to n=2 is shorter than the wavelength of light emitted if the electron falls from n=3 to n=1. TRUE. As the n=2 state is in a higher energy than n=1, the energy difference between n=2 and n=3 are shorter than differences between n=1 and n=3 states.

3) It takes more energy to ionize the electron from n=3 than it does from the ground state. FALSE. An electron with a high energy will be less-atracted by the nucleus than a electron with a low energy because is farther of it.

4) The wavelength of the light emitted when the electron returns to the ground state from n=3 is larger than the wavelength of light absorbed to go from n=1 to n=3. FALSE. The energy differences in light emitted and light absorbed is the same.

5) The electron is farther from the nucleus on average in the n=3 state than in the ground state. TRUE. According Bohr's model, the greater energy level, the farther from the nucleus it is.

I hope it helps!

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.