Mixture of liquids A and B exhibits ideal behavior. At 79°C, the total vapor pressure of a solution containing 1.5 moles of A and 2.4 moles of B is 326 mmHg. Upon the addition of another mole of B to the solution, the vapor pressure increases to 343 mmHg. Calculate the vapor pressures of pure A and B at 79°C.

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?