Determine the mass of oxygen in a 7.20 g sample of al2(so4)3.
the answer is d. paleontologists.
cohesive forces are greater than adhesive forces
the attractive forces between water molecules and the wax on a freshly-waxed car (adhesive forces) are quite weak.
however, there are strong attractive forces (cohesive forces) between water molecules.
the water molecules are only weakly attracted to the wax, so the cohesive forces pull the water molecules together to form beads .
answer: the balanced hemical equation is given below. 18 moles of oxygen are produced.
when 2 moles of potassium chlorate decomposes to produce 2 moles of potassium chloride and 3 moles of oxygen gas. the balanced chemical equation for this decomposition reaction follows:
by stoichiometry of the reaction,
2 moles of potassium chlorate produces 3 moles of oxygen gas
so, 12 moles of potassium chlorate will produce = of oxygen gas.
hence, 18 moles of oxygen gas will be produced.