in an experiment to determine density , students were measuring mass and volume. They found the mass of their substance to be 8.12 g and the volume to be 1.9 cm 3. The actual density was 4.5 g/cm 3. what was their percent error?

What is the standard unit of measure for acceleration?

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.