Chemistry, 12.08.2019 21:30 onewaydemon
Three students (a, b, and c) are asked to determine the volume of a sample of ethanol. each student measures the volume three times with a graduated cylinder. the results in milliliters are: a (87.1, 88.2, 87.6); b (86.9, 87.1,87.2); c (87.6, 87.8, 87.9). the true volume is 87.0 ml. comment on the precision and the accuracy of each student's results.
Answers: 2
Chemistry, 22.06.2019 16:10
Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)
Answers: 2
Chemistry, 23.06.2019 06:00
Which change will decrease the number of effective collisions during a chemical reaction? a. adding a catalyst b. increasing the surface area c. decreasing the temperature d. increasing the reactant concentrations e. increasing the volume of the reactants
Answers: 2
Three students (a, b, and c) are asked to determine the volume of a sample of ethanol. each student...
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