Which of the following statements best describes cosmic microwave background radiation? a. the wind left over from the big bang b. the heat and energy left over from the big bang c. the heat and light left over from the big bang d. the original particles of radiation that were present during the big bang

The answer is; C

Cosmic Microwave Background is the remnants of the big bang. Due to early conditions on the universe, of high pressure and temperature, atoms did not exist because they were easily split into subatomic particles. The highly ionized ‘cloud’ also scattered photons that still travel in the impenetrable ‘fog’ until today. Because the universe cooled, the background radiation can only be viewed in microwave wavelength.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

it means there are 3 atoms of oxygen