A student has two objects. Object 1 has a mass of 28 g and a volume of 12 cubic centimeters. Object 2 has a mass of 34 g and a volume of 50 cubic centimeters. If
both the objects are placed in water, give the DENSITY of the object that will FLOAT
in WATER (Density = 1.0 g/cm3)

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?

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.

The volume of a single vanadium atom is 9.29×10-24 cm3. what is the volume of a vanadium atom in microliters?