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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Fresh day, fresh solve. 6. A mixture is a substance containing two or more different substances that are not chemically bonded together. Granulated sugar is a pure compound (sucrose). Seawater is a mixture of water, various salts (like sodium chloride), and other dissolved substances. Sodium chloride is a pure compound. Iron filings are a pure element. B. Seawater 7. Step 1: Identify the given information. Element Z contains 90% of one isotope and 10% of another. Step 2: Assume the isotopes are Z_16 and Z_18 (common isotopes for elements like oxygen, which fits the given options). Step 3: Calculate the relative atomic mass using the formula: Relative Atomic Mass = (\% abundance of isotope 1 × mass of isotope 1) + (\% abundance of isotope 2 × mass of isotope 2) Relative Atomic Mass = (0.90 × 16) + (0.10 × 18) Relative Atomic Mass = 14.4 + 1.8 Relative Atomic Mass = 16.2 B. 16.2 8. Local black soap is produced through saponification, a process where fats or oils (like palm oil) react with an alkali (base) to form soap and glycerol. The ash extract provides the necessary alkali (e.g., potassium carbonate) for this reaction. C. alkali 9. Propan-1-ol is a primary alcohol. Complete oxidation of a primary alcohol first yields an aldehyde (propanal), and then further oxidation yields a carboxylic acid. Therefore, complete oxidation of propan-1-ol gives propanoic acid. D. propanoic acid 10. When water is added to calcium carbide (CaC_2), it produces acetylene gas (C_2H_2). Acetylene is a hydrocarbon that burns with a characteristic bright, sooty flame due to incomplete combustion, which is known as a luminous flame. A. luminous flame Got more? Send 'em.