QUESTION 30 Consider the Particle Representation and accompanying Atom Key. Which one statement does NOT correctly describe the diagram? Particle Representation: Atom Key: . = Hydrogen (H) = Oxygen (O) = Sodium (Na) - Chlorine (CI) There are two molecules of the compound hydrogen chloride (HCI). There are three molecules of the compound sodium. There are three molecules of the compound water (H20). There are three molecules of diatomic chlorine (Cl2) QUESTION 31 Consider the Particle Representation and accompanying Atom Key. Which set of formulas correctly describe the diagram? Particle Representation: Atom Key: . = Hydrogen (H) )= Oxygen (O) = Nitrogen (N) = Copper (Cu) 4 Cu + 2 NO2 + 2 H20 + 3 N2 ( 4 Cu + 2 NO2 + 2 H20 +6N O 4 Cu4 + 2 NO2 + 2 H20 +2 N3 O 4 Cu4 + N204 + H402 + 3 N2QUESTION 40 The reactants shown in the schematic below represent methane (CH4) and water (H20). Write out the full the balanced chemical equation that is depicted.The figure below represents molecules that are involved in a chemical reaction. Each circle represens an atom and each color represents a specific element. The illustration on the left shows the reactants and the one on the right shows the products of the reaction. There is an error in this representation. Identify the error and explain why it is a mistake.QUESTION 35 Match the following terms with the most appropriate type of bonding. Involves valence electrons A. Ionic Transfer of electrons B. Covalent Sharing of electrons C. Both nonmetal + nonmetal Y magnesium chloride V waterQUESTION 38 Fill in the missing coefficients to balance the following equation: Ba(OH)2 + CO2 => BaCO3 + H20 (The chemical equation is: _Ba(OH)2 + _CO2 =>_ BaCO3 + _H20) Note: We've discussed that a coefficient of '1' is generally not written. However, in cases such as this, go ahead and include a '1' (if applicable) to show that you recognize there is one of the element/molecule present as a reactant or product. QUESTION 39 Fill in the missing coefficients to balance the following equation: Al + CuSO4 => Al2(SO4)3 + Cu (The equation is: _Al + _Cus04 = _ Al2(SO4)3 + _ Cu) Note: We've discussed that a coefficient of '1' is generally not written. However, in cases such as this, go ahead and include a '1' (if applicable) to show that you recognize there is one of the element/molecule present as a reactant or product.QUESTION 32 One of these representations is not like the others. Which one does not belong? A. "The reaction is exothermic." B. Energy Surroundings System C. D. Reactants => Products + Energy OA U B OC OD