Apiece of paper burns in a closed flask. as it burns, does the number of atoms in the flask increase, decrease, or remain the same? a. the number and type of atoms increase. b. the number and type of atoms decrease. c. the number and type of atoms remain the same. d. the number of atoms remains the same but the types of atoms change. e. none of the above. the paper is not made up of atoms.

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.

What is the mass of 0.750 mole of aluminum oxide, al2o3?