Home Homework Help

Browse Homework Solutions

10,393 solutions

Thermochemical Equation

Q. A chemist measures the enthalpy change ΔH during the following reaction: COCl2(g) + 4NH3(g) → CO(NH2)2(s) + 2NH4Cl(s) ΔH = 559. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. CO(NH2)2(s) + 2NH4Cl(s) → COCl2(g) + 4NH3(g)

Solved • Oct 19, 2019

Thermochemical Equation

Q. A chemist measures the enthalpy change ΔH during the following reaction: COCl2(g) + 4NH3(g) → CO(NH2)2(s) + 2NH4Cl(s) ΔH = 559. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. 1/4CO(NH2)2(s) + 1/2(NH4Cl(s) → 1/4COCl2(g) + NH3(g)

Solved • Oct 19, 2019

Wavelength and Frequency

Q. Infrared radiation from young stars can pass through the heavy dust clouds surrounding them, allowing astronomers here on earth to study the earliest stages of star formation, before a star begins to emit visible light. Suppose an infrared telescope is tuned to detect infrared radiation with a frequency of 6.43THz. Calculate the wavelength of the infrared radiation. Be sure your answer has the correct number of significant digits.

Solved • Oct 19, 2019

Wave Function

Q. Here is a sketch of the radial probability distribution of three orbitals: Use this sketch to answer the following questions. Suppose all three orbitals weer inner orbital of an atom. In which orbital would an electron be most effective at screening the charge of the nucleus from the outer electrons?

Solved • Oct 19, 2019

Wave Function

Q. Here is a sketch of the radial probability distribution of three orbitals: Use this sketch to answer the following questions. List the orbitals in order of increasing energy:

Solved • Oct 19, 2019

Wave Function

Q. Here is a sketch of the radial probability distribution of three orbitals: Use this sketch to answer the following questions. What is the most likely distance from the nucleus for an electron in orbital A? Note: your answer must be within 50 pm of the exact to be graded correct.

Solved • Oct 19, 2019

Introduction to Quantum Mechanics

Q. List all possible values of the magnetic quantum number ml for a 3s electron.

Solved • Oct 19, 2019