how to calculate halflives
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these are the 2 equations you'll need to calculate half life
Remaining amount = (initial amount)(1/2)^n
remaining amount = (initial amount)(1/2)^(t/T)
Chemistry
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Systematic Error VS Random Error
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http://www.physics.umd.edu/courses/Phys276/Hill/Information/Notes/ErrorAnalysis.html
Lead Nitrate - Potassium Iodide Lab
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Purpose: The purpose of this lab was to try to get Pb I2 to filter out after combining Pb(NO3)2 and KI. We also wanted to further demonstrate what we did in class with limiting reagents. Materials: Lead (II) Nitrate Potassium Iodide 3 beakers Ring Stand Funnel Filter Paper Scale Water Stirring Rod Funnel clamp Wash Bottle Procedure: The first thing that we did was measure out 3.16g Pb(NO3)2 and 5.00 g of KI on the scale. Next we filled two of the beakers with 40 mL of water and poured the Pb(NO3)2 into one and the KI into the other. After dissolving them we then combined the two solutions into one beaker, which caused a thick, yellow substance to form.
AP Chemistry labs
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Cool science fair idea
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Science Fair Idea Nick Gorgone Question: What is the most effective way to clean up an oil spill? Hypothesis: If the item used to clean up the oil is the sponge, than that will be the most effective. Dependent Variable: The amount of oil in the water Independent Variable: The way the oil is cleaned. IV Table _______________________________________________________________________ Technique used Amount of Oil Left Over Skimmer Sponge Chemicals Constants: Amount of oil used, container, room temperature, amount of water used, tank used, type of oil used
Chem formulas and periodic table
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Equations ][log HpH ][log OHpOH reactantsproductstotal HHH STHG Tmcq vapvap Hmq fusionfusion Hmq nRTPV CBAtotal PPPP Kmol atmLR 0821.0 ba dc K ][][ ][][ BA DC baspK ][][ BA 273CK o Kmol JR 31.8 where a A + b B ? c C + d D where AaBb ? a A + + b B- Chemistry Honors Final Examination Spring 2010 Information Sheet
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Solubility Rules
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Study of Photosynthesis
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Why Study Photosynthesis? Devens Gust, Ph.D.?Department of Chemistry and Biochemistry?Foundation Professor of Chemistry and Biochemistry What is photosynthesis?
Photosynthesis
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Why Study Photosynthesis? Devens Gust, Ph.D.?Department of Chemistry and Biochemistry?Foundation Professor of Chemistry and Biochemistry What is photosynthesis?
Electron configurations and Lewis dot structures quiz
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Name: Electron Configurations and Lewis Dot Structures Quiz Which is the correct ground state electron configuration for Fluorine? 1s22s22p5 1s22s22p2 1s22s22p4 1s22s22p1 Which is the correct ground state electron configuration for Neon? 1s22s22p63s1 1s22s22p5 1s22s22p43s1 1s22s22p6 The full electron configuration for an element is 1s22s22p63s1 . What element is this? What is this elements symbol on the periodic table How many valence electrons does this element have? Draw Lewis Dot Structures for the following elements C N O F Ne Si S P Cl Ar Based on the Lewis Dot Structures you drew in question 4 explain what relationship (if any) you notice between the group number and the number of valence electrons.
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