What disaccharide is composed of one monomer each of glucose and fructose?

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

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.