When writing chemical equations, the coefficient is distributed to each element in the (1) not just the first element. The coefficient also goes in front of the entire compound. If a subscript is located within the compound, the subscript is (2) by the coefficient to determine the number of atoms of that element. Examine the formula: N2 + H2 ⇒ NH3. When balancing this equation, the reactant side has (3) nitrogen atoms, while the product side has (4) nitrogen atom. To balance the nitrogen atoms, a coefficient of 2 is placed in front of the compound (5) . The number of hydrogen atoms in the product is now equal to 2x3, or the coefficient times the (6) . The hydrogen atoms on the reactant and product sides are not (7) . To balance them, a (8) must be placed in front of the H2. Now the equation is balanced. Options:
(1) - Balanced, Compound, Subscript
(2) - Subscript, Balanced, Compound, Multiplied
(3) - 2, 1, 3, N2
(4) - 3, H2, 2, 1
(5) - N2, NH3, H2, 2
(6) - Subscript, Compound, Balanced, Multiplied
(7) - Subscript, Compound, Balanced, Multiplied
(8) - 2, 1, H2, 3

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

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conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.

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