general chemistry lab 1111
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Section:109 – 1:00 to 3:30 pm (Wednesday)112 – 4:00 to 6:30 pm (Wednesday)125 – 3:00 to 5:30 pm (Saturday)
General Chemistry Lab 1111
Instructors & TAsSection 109 – Dr. Jie Zheng
Rodrigo Vinluan (rdv081000@utdallas.edu)Sasha Sun (sxs116020@utdallas.edu)
Section 112 – Dr. Steven NielsenRodrigo VinluanImalka Munaweera (msm110020@utdallas.edu)
Section 125 – Amandeep SraRodrigo VinluanXiaofeng Song (sxx110030@utdallas.edu)
OFFICE HOURS: Sunday 4 – 5 pm in GEMS Center
Syllabus eLearning Course Description Required Books & Materials Make Up Labs Penalty Points Workshop Lab Assignments Notebook Write Ups Data Clean Up! Broken glassware (breakage form to Stockroom) Grading Criteria Withdrawal from Class and Religious Holy Days
Safety
Safety GogglesGlovesClose-toed shoesLong pants – no
shorts!No food or drinkLabel all glasswareWork under the fume
hoodNever put chemicals
directly on a balance!
Safety (continued)Know the location of
safety equipmentSafety showerFire extinguisherEyewashFirst Aid kit
Dispose broken glass in a proper container
Dispose chemicals/wastes properly
Wash hands
Experiment 1: Basic Lab OperationsA) MeasurementsB) Significant FiguresC) Reading a Meniscus
Experiment 1: Basic Lab Operations (continued)A) Measurements
MassBalances
VolumePipettes and pipette
bulbs
Experiment 1: Basic Lab Operations (continued)B) Significant Figures Rules1) ALL non-zero numbers (1,2,3,4,5,6,7,8,9) are
ALWAYS significant. (i.e. 12,345 = 5 sigfigs)
2) ALL zeroes between non-zero numbers are ALWAYS significant. (i.e. 1001 = 4 sigfigs)
3) ALL zeroes which are SIMULTANEOUSLY to the right of the decimal point AND at the end of the number are ALWAYS significant. (i.e. 0.0100 = 3 sigfigs)
4) ALL zeroes which are to the left of a written decimal point and are in a number >= 10 are ALWAYS significant.(i.e. 100. = 3 sigfigs)
Experiment 1: Basic Lab Operations (continued)B) SigFigs ExamplesNumber #Significant Figures12,435 5100.5 40.0020 21.00000 64,000,000 10.0100 3
Experiment 1: Basic Lab Operations (continued)B) Sig Figs
When adding or subtracting your answer can only show as many decimal places as the measurement having the fewest number of decimal places.Ex. 3.76 + 14.83 + 2.1
20.69 20.7When multiplying or dividing, your answer may only show as many significant digits as the multiplied or divided measurement showing the least number of significant digits.Ex. 31 x 21 = 651 6.5 x 102 or 650
100.0/1.0 = 10 10.
Experiment 1: Basic Lab Operations (continued)C) Reading a
MeniscusMeniscus is the curve in the upper surface of a standing body of liquid to the surface of the container or another object. A:concave B: convex
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