Chem 1120 Final Exam

Chem 1120 Final Exam To measure out a volume of liquid, start by choosing the appropriate graduated cylinder and moving the bumper to the _______. _________ of the graduated cylinder to protect it from breakage. Then, pour the liquid into the graduated cylinder until the _________. _______________ of the meniscus aligns with the desired volume marking when you look at the graduated cylinder from _________. - correct answer -top bottom eye level Determine whether each of the errors listed affects the accuracy of pipets, or can lead to the contamination of pipets. The pipet is not cleaned thoroughly between uses. Pipets are washed with detergent and then put to use immediately. After the liquid is drained from the pipet, the final drop is pushed through with the pipet bulb. The liquid level in a pipet is read from the top of the curve rather than the meniscus. Air bubbles are present as the liquid is drawn up into the pipet and dispensed. - correct answer - Contamination Contamination Accuracy Accuracy Accuracy