We create an electron with wavefunction ψ = [ψ1s (r) + 3ψ3s (r) ] / √ 10. Find the expected value hEi of the energy in that state. Use the energies of the hydrogen atom to extract your answer in electron volts.

What is the technique for calculating the age of remains from the amount of C-14 that is left in once alive living things?

Select the reagent (s) that would efficiently convert the starting material to the product for the following transformations (if more than one reagent is needed, list them in order separated by commas with NO spaces. For example, e, d, c).

What's global warming

Consider the unbalanced equation for the decomposition of silver nitrate: AgNO3 (s) - - - >Ag (s) + NO2 (g) + O2 (g) 1. Write the balanced equation for the reaction. 2. When 54.0g of AgNO3 is heated, 4.60g of O2 is formed.

What are the two types of pure substances? Give definitions for each.

Explain the difference between two types of elements with respect to the atoms

The ro - group is the nucleophile. think about which group in the alkyl halide (iodoethane) is the leaving group. keep in mind that the leaving group may be one atom or a group of atoms.

An organic compound is classified as aromatic if it cyclic and has a fragrant odor true or false

Which subatomic particles differ in number for two isotopes of the same element, and which subatomic particles will stay consistent between two isotopes of the same element? Explain how you know.

What is the oxidation state of an individual phosphorus atom in PO33-?