March 25, 2016: Participated in +2 Wealth； +3 to 8 wealth for correct answers
Thread Content
To increase the popularity of the chemical analysis section, a \"One Question per Day\" campaign has been launched to foster an active atmosphere for technical exchanges while also providing financial rewards to users. 【Daily Question】 (Single-choice question) The density of petroleum products changes with temperature; as the temperature rises, the density of the oil ( ) A. increases B. decreases C. remains unchanged D. it cannot be determined. Correct answer: B. Reply with your answer in the comments to participate in the quiz – you will receive +2 wealth points. Those who get all answers correct will receive an additional +3 to +8 wealth points. Those who provide a thorough analysis or explanation of the question and answers, 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.
B Decrease~~~~~~~~~~
The density of petroleum products changes with temperature; as the temperature rises, the density of the oil (b) A increases B decreases C remains unchanged D it cannot be determined
As density decreases, petroleum products are not composed of a single component; therefore, as temperature rises, the quality of the oil changes, and its density should decrease. Conversely, when the temperature drops, the density increases