What makes aldehyde and ketones be carbonyl compound with undisplaceable substituent

What are transitions between a liquid and gas called? identify which way they are transitioning

Which of the following describes a situation where competition between producers exists

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.