Chemistry, 17.10.2021 07:40, YouKnowGucci
A student is using one and the same conical flask to make up several solutions of 1 M HCl solution in the lab one day. It is a very hot day and the student measures the temperature in the lab and find it fluctuates between 30C and 36C. The student is not measuring the temperature between each solution. Would you describe the error introduced by this temperature change as a systematic error? True or false
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What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5
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Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
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Chemistry, 22.06.2019 19:00, innocentman69
How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next
Answers: 1
A student is using one and the same conical flask to make up several solutions of 1 M HCl solution i...
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