A mole of lead will be heavier or lighter than a mole of oxygen because:

Describe the type of force which exists between particles in an ideal gas. explain why this type of force exists between the particles.

Which of the following questions can use science as a method of inquiry? is cloning appropriate? how can we protect crops from drought? why is jazz a great type of music? did dinosaurs exist?

Percent purity of fe2o3 in original sample. fe2o3 + 3co - 2fe+3co2. 1.39 x 10^3 kg of fe is obtained from 2.22 x 10^3 kg sample of fe2o3. reaction goes to completion