2. A cube has a side of 5 cm. It has a mass of 250 grams. The density of the cube is which one of the following?
A) 50 g/cm and will float in water
B) 2.0 g/cm and will float in water
C) 50 g/cm and will sink in water
D) 2.0 g/cm and will sink in water
E) 0.5 g/cm and will float in water

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

What term describes technology that operates on an atomic level

Phosgene (carbonyl chloride), cocl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: co(g) cl2(g)⇌cocl2(g) carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 477 ∘c . at equilibrium, the concentrations were measured and the following results obtained: gas partial pressure (atm) co 0.830 cl2 1.30 cocl2 0.220 what is the equilibrium constant, kp, of this reaction