【Daily Question】December 6, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers
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This post was last edited by zjp on 2015-12-8 at 10:03. To increase the popularity of the chemical analysis section, a \"One Question per Day\" campaign has been launched; this aims to foster active technical exchanges while also providing financial rewards to users. 【Daily Question】 (Single-choice question) A 25.00 mL pipette delivered 24.92 g of pure water at 15°C. The mass of 1 mL of pure water at 15°C is 0.99793 g. The correction value for this pipette is ( ). A +0.03mL B –0.03mL C +0.08 mL D –0.08 mL. Correct answer: B. Post your answer in the replies to participate; you will receive +2 wealth points for that. If you answer all questions correctly, you’ll get an additional +3 to +8 wealth points. Those who provide thorough analyses and explanations for the questions (or include detailed calculation processes) will receive extra wealth points as well. If your answer is correct and your analysis is accurate, it will be marked as the best reply (or the best assistance). Feel free to answer the questions. Note: We will close this post after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation.
The mass of pure water delivered by a 25.00 mL pipette at 15°C is 24.92 g; the mass of 1 mL of pure water at 15°C is 0.99793 g. The correction value for this pipette is (B). A +0.03mL B –0.03mL C +0.08 mL D –0.08 mL
The mass of pure water delivered by a 25.00 mL pipette at 15°C is 24.92 g; the mass of 1 mL of pure water at 15°C is 0.99793 g. The correction value for this pipette is (C). A +0.03mL B –0.03mL C +0.08 mL D –0.08 mL
The mass of pure water delivered by a 25.00 mL pipette at 15°C is 24.92 g; the mass of 1 mL of pure water at 15°C is 0.99793 g. The correction value for this pipette is (B).
The mass of pure water delivered by a 25.00 mL pipette at 15°C is 24.92 g; the mass of 1 mL of pure water at 15°C is 0.99793 g. The correction value for this pipette is (B). A +0.03mL B –0.03mL C +0.08 mL D –0.08 mL
B, -0.03ml. --------------------------------------------------
The mass of pure water delivered by a 25.00 mL pipette at 15°C is 24.92 g; the mass of 1 mL of pure water at 15°C is 0.99793 g. The correction value for this pipette is (B). A +0.03mL B –0.03mL C +0.08 mL D –0.08 mL
The mass of pure water delivered by a 25.00 mL pipette at 15°C is 24.92 g; the mass of 1 mL of pure water at 15°C is 0.99793 g. The correction value for this pipette is (d). A +0.03mL B –0.03mL C +0.08 mL D –0.08 mL