The simplest ratio of carbon atom to hydrogen atom in benzene represents

here are the solutions to the questions: 17. The general formula of an alkyl group is Step 1: Recall the general formula for an alkane. The general formula for an alkane is C_nH_2n+2. Step 2: Derive the formula for an alkyl group. An alkyl group is formed by removing one hydrogen atom from an alkane. So, the formula becomes C_nH_2n+2-1 = C_nH_2n+1. D. C_nH_2n+1 18. The simplest ratio of carbon atom to hydrogen atom in benzene represents Step 1: Recall the molecular formula of benzene. The molecular formula of benzene is C_6H_6. Step 2: Determine the simplest ratio of carbon to hydrogen. The ratio of carbon to hydrogen atoms is 6:6, which simplifies to 1:1. Step 3: Identify what this simplest ratio represents. The simplest whole-number ratio of atoms in a compound is represented by its empirical formula. For benzene, the empirical formula is CH. C. empirical formula. 19. Degenerate orbitals are orbitals of Degenerate orbitals are defined as orbitals that have the same energy level. For example, the three p-orbitals (p_x, p_y, p_z) in a given shell are degenerate. D. the same subshell having equal energy. 20. The molar mass of a chloride of iron is 127 g mol^-1. Given that Cl=35.5, Fe=56.0, the formula of the chloride is Step 1: Assume the formula of the iron chloride is FeCl_x. Step 2: Set up an equation for the molar mass. Molar mass of FeCl_x = (Molar mass of Fe) + x × (Molar mass of Cl) 127 = 56.0 + x × 35.5 Step 3: Solve for x. 127 - 56.0 = 35.5x 71 = 35.5x x = (71)/(35.5) x = 2 Step 4: Write the formula. The formula of the chloride is FeCl_2. D. FeCl_2 21. Which of the following substances could be used in galvanization of iron to prevent rusting? Galvanization is a process of applying a protective zinc coating to steel or iron to prevent rusting. Zinc is used because it is more reactive than iron and acts as a sacrificial anode, corroding in preference to the iron. A. Zinc 22. (The question is incomplete in the image, so I cannot provide an answer.) 23. A hydrocarbon C_3H_y burns in air according to the following equation: C_3H_y(g) + 5O_2(g) → 3CO_2(g) + (y)/(2)H_2O_(g) The value of y is Step 1: Balance the oxygen atoms on both sides of the equation. Oxygen atoms on the reactant side: 5 × 2 = 10 atoms. Oxygen atoms on the product side: From CO_2: 3 × 2 = 6 atoms. From H_2O: (y)/(2) × 1 = (y)/(2) atoms. Step 2: Set the total oxygen atoms on both sides equal. 10 = 6 + (y)/(2) Step 3: Solve for y. 10 - 6 = (y)/(2) 4 = (y)/(2) y = 4 × 2 y = 8 D. 8. 24. An element X has a valency of +3. The correct formula of its chloride is Step 1: Determine the valency of X and Cl. Element X has a valency of +3. Chlorine (Cl) is in Group 17 and typically has a valency of -1. Step 2: Combine the elements to form a neutral compound. To balance the +3 charge of X, three chloride ions (each with a -1 charge) are needed. The formula will be XCl_3. B. XCl_3 25. Y is a weak acid that turns blue and green when added to an aqueous solution of NaHSO_4 and Na_2CO_3 respectively. Y could be Step 1: Analyze the properties of the solutions. NaHSO_4 (sodium bisulfate) is an acidic salt. Na_2CO_3 (sodium carbonate) is a basic salt. Step 2: Interpret the color changes. Y turns blue in an acidic solution (NaHSO_4). Y turns green in a basic solution (Na_2CO_3). Step 3: Conclude the nature of Y. A substance that changes color depending on the pH of the solution is an acid-base indicator. B. an acid-base indicator. 26. A zwitterion is A zwitterion is a molecule that contains both positive and negative charges, but is electrically neutral overall. This characteristic of having separated positive and negative charges within the same molecule is described as being bipolar. Amino acids are common examples of zwitterions. D. bipolar. Send me the next one 📸