help me with this give me an answer I don't know how to solve it please Calculating the speed of light in a medium: What is the speed of light in a rectangular prism if its index of refreaction is 1.5? Given: speed of light in a vacuum v = 3.00 x 108 m/s Index of refraction of ethyl alcohol n = 1.5 Required: Find the speed of light in the prism. Analysis and Solution:

Does the energy in a solid increase or decrease when changing to a liquid?

Concerning the 10.0 ml of 0.50 m nacl to 100 ml of solution: when a solution is diluted, does it change the number of moles dissolved?

Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o