This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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saidumuhammad3991, let's knock this out. 19. At a certain temperature a liquid changes to solid is... The process where a liquid changes to a solid at a specific temperature is called freezing. The correct option is B. Freezing point. 20. Aspirin when inhaled is a ............property When aspirin is inhaled, its interaction with the body involves chemical reactions, making it a chemical property. 21. What is the pH of Hydrogen ion concentration in H2SO4 given (0.01) for hydrogen Sulfuric acid (H_2SO_4) is a strong diprotic acid, meaning it releases two H^+ ions per molecule. If the concentration of H_2SO_4 is 0.01\,M, then the hydrogen ion concentration [H^+] would be 2 × 0.01\,M = 0.02\,M. Step 1: Determine the hydrogen ion concentration. [H^+] = 2 × 0.01\,M = 0.02\,M Step 2: Calculate the pH using the formula pH = -[H^+]. pH = -(0.02) pH = -(-1.69897) pH ≈ 1.70 The provided answer of 1.69 is consistent with this calculation. 22. What is the pH of HCl--(0.01)? Hydrochloric acid (HCl) is a strong monoprotic acid, meaning it releases one H^+ ion per molecule. If the concentration of HCl is 0.01\,M, then the hydrogen ion concentration [H^+] is 0.01\,M. Step 1: Determine the hydrogen ion concentration. [H^+] = 0.01\,M Step 2: Calculate the pH using the formula pH = -[H^+]. pH = -(0.01) pH = -(10^-2) pH = -(-2) pH = 2.0 The provided answer is correct. 23. The fact that sodium carbonate react with lead is ............property A reaction between two substances, like sodium carbonate and lead, describes a chemical property because it involves a change in their chemical composition. 24. The sum of the powers of the concentration of the reactant in the rate equation is............... The sum of the powers (exponents) of the concentration terms of the reactants in the rate equation is defined as the order of reaction. 25. Something something they coagulate and seperate ................. When particles coagulate (clump together) and then separate, often due to gravity, the process is called sedimentation or flocculation and sedimentation. 26. If different chemical compounds possess the same lattice structures. They are called............ Chemical compounds that have the same crystal lattice structure are described as isomorphous. 27. Ions of weak base form .......... A weak base accepts a proton (H^+) from water to form its conjugate acid and hydroxide ions. Therefore, a weak base accepts H^+ ions. What else can I help you with?