【Daily Question】10.2 Back + 2； For +3~8
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This post was last edited by zjp on 2015-10-3 at 16:39. To increase the popularity of the chemical analysis section, a \"Question of the Day\" activity has been introduced; this aims to foster active technical exchanges while also providing members with certain financial rewards. 【Daily Question】 (Single-choice question) At 24°C (where the density of water is 0.99638 g/mL), the mass of pure water delivered to the mark in a 25 mL pipette was 24.902 g. What is its actual volume at 20°C? ( ) mL. A.25 B.24.99 C.25.01 D.24.97 Please reply with your answer in the comments; answering the question earns you +2 wealth points. Getting all answers correct grants 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 a reward. If your answer is correct and your analysis/explanation 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.
At 24°C (where the density of water is 0.99638 g/mL), the mass of pure water delivered to the mark in a 25 mL pipette was 24.902 g; therefore, its actual volume at 20°C is (B) mL.
I chose d.24.97 – I’m not sure if that’s correct
At 24°C (where the density of water is 0.99638 g/mL), the mass of pure water delivered to the mark in a 25 mL pipette was 24.902 g; therefore, its actual volume at 20°C is (B) mL. A.25 B.24.99 C.25.01 D.24.97
At 24°C (where the density of water is 0.99638 g/mL), the mass of pure water delivered to the mark in a 25 mL pipette was 24.902 g; therefore, its actual volume at 20°C is (B) mL. A.25 B.24.99 C.25.01 D.24.97
At 24°C (where the density of water is 0.99638 g/mL), the mass of pure water delivered to the mark in a 25 mL pipette was 24.902 g; therefore, its actual volume at 20°C is (B) mL. A.25 B.24.99 C.25.01 D.24.97
At 24°C (where the density of water is 0.99638 g/mL), the mass of pure water delivered to the mark in a 25 mL pipette was 24.902 g; therefore, its actual volume at 20°C is ( ) mL. B.24.99
C.25.01.....................................
At 24°C (where the density of water is 0.99638 g/mL), the mass of pure water delivered to the mark in a 25 mL pipette was 24.902 g; therefore, its actual volume at 20°C is (B) mL. A.25 B.24.99 C.25.01 D.24.97
At 24°C (where the density of water is 0.99638 g/mL), the mass of pure water delivered to the mark in a 25 mL pipette was 24.902 g; therefore, its actual volume at 20°C is (B) mL. A.25 B.24.99 C.25.01 D.24.97