Complete the equation for respiration: Oxygen + ---> carbon dioxide + energy + water *

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

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.

Use the periodic table to find the molar mass of each element. molar mass h = g/mol molar mass s = g/mol molar mass o = g/mol