***50 points*** which of the following combinations will result in a reaction that is only spontaneous at low temperatures? a) positive enthalpy change and positive entropy change b) positive enthalpy change and negative entropy change c) negative enthalpy change and positive entropy change d) negative enthalpy change and negative entropy change i think it's c, or maybe d, !

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

What substance has a mass of 9.5g and volume of 2.1cm^3