results. * 2.82g CuSO4*5H2O - 2.05g CuSO4 = 0.77gH2O 0.77gH2O2.82gCuSO4*5H2O100= 27.30% H2O (experimental) 2) The formula for the hydrate you used is CuSO4*5H2O. Determine the accepted percentage mass for water in this substance. * Cu 1x64= 64g S 1x32=32g O 9x16=144g H 10x1=10g Total= 250g H 10x1= 10g O 5x16= 80g Total= 90g 100H2Ototal = 10090g H2O250g CuSO4 = 36% H2O 3) Determine your percent error. * theoretical % water-experimental % watertheoretical
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© Drs. XO‚ PHB‚ CWR Crystal & Ligand Field Theory (10.2.1‚ 10.3) CHEM 241 Fall 2014 TM − p.1 Ligand field theory (the MO version of crystal field theory) includes two main components: 1. What holds the complexes together: The set of ligands are held to a metal ion by largely electrostatic forces (although there really is a high degree of covalency). The forces arise from the positive charge on the metal ion and the electric dipoles of the ligands‚ whose negative ends are associated
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Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. This process occurs in plants and some algae (Kingdom Protista). Plants need only light energy‚ CO2‚ and H2O to make sugar. The process of photosynthesis takes place in the chloroplasts‚ specifically using chlorophyll‚ the green pigment involved in photosynthesis. Photosynthesis takes place primarily in plant leaves‚ and little to none occurs in stems‚ etc. The parts of a typical leaf
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polyfunctional acid H3PO4 + H2O ( H2PO4- + H3O+ Ka1 = [H3O+] [H2PO4-] = 7.11e-3 [H3PO4 ] H2PO4- + H2O ( HPO4-2 + H3O+ Ka2 = [H3O+] [H2PO4-2] = 6.32e-8 [H2PO4- ] HPO4-2 + H2O ( PO4-3 + H3O+ Ka3 = [H3O+] [PO4-3] = 4.5e-13 [HPO4-2] Ka1> Ka2> Ka3 13B—Describing Polyfunctional Bases CO3-2 + H2O ( HCO3- + OH- Kb1 = [HCO3-] [OH-] = Kw = 2.13e-4 [CO3-2] Ka2 HCO3- + H2O ( H2CO3 + OH- Kb2 = [H2CO3]
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Determining the unknown concentration of HCl via heat of neutralization of a reaction involving strong electrolytes and weak electrolytes. Myeongwon Lee 20522885 Partner: Frank Wong TA: Afsoon CHEM 120L – Earth Science & Chem 149 Section: 004 Tuesday‚ November 26th‚ 2013 Introduction All chemical changes are accompanied by change in energy and this energy is in form of heat. The energy change of a reaction that happens at constant pressure is defined as heat of reaction or enthalpy change and the
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example‚ Putnam describes ‘Twin Earth’ as a place that is essentially a duplicate of earth. Everything on this Twin Earth is the same‚ except for the molecular structure of its water. Instead of its water having a chemical structure that consists of H2O‚ its chemical structure is XYZ. Although it does contain the same superficial characteristics of water‚ Putnam theorizes that this XYZ ‘water’ is not the same as the water here on earth. Thus‚ Putnam draws his first conclusion. He concludes that the
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was diluted 1 to 11 and the concentration was 1ug in 5ul 2. 1ul of previous dilution in 9ul H2O > 0.01ug DNA in 5ul 3. 1ul of previous dilution in 9ul H2O > 0.001ug DNA in 5ul 4. 1ul of previous dilution in 9ul H2O > 0.0001ug DNA in 5ul 5. 1ul of previous dilution in 9ul H2O > 0.00001ug DNA in 5ul To make my DNA sample I used dilutions: 1. 1 to 10 2. 1 to 100 The master mix : Nuclease free H2O 19ul 2x SYBR Mastermix with polymerse 25ul L primer (100pM/ul) 0.5ul R primer (100pM/ul)
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thermal energy of atoms‚ molecules ‚or ions at the submicroscopic level Kinetic energy is often expressed by common unit of energy‚ that is by calorie (cal) 1 calorie is the amount of energy needed to raise the temperature of one gram of water‚ H2O‚ by one oC. 1 cal = 4.184 J Potential energy‚ Ep:
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Dilute NaOH: Dissolves and substance became a bit thick Substance: CuCO3 Color: Green Odor: Yes Effect of Heat: Turned into black powder Solub. or Reaction w/cold H2O: No reaction. Solub. or Reaction w/hot H2O: No reaction Litmus test: No change on blue or red. Dilute HCl: Bubbles up‚ does not dissolve‚ solution turns green Dilute NaOH: Turns navy blue Substance: Cu(NO3)2 Color: Blue Odor: Slight Odor Effect of Heat: Dissolves
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fumbles the ball‚ H2O recovers for 6 and the extra-point is good‚ H2O is up 14-3. Lithium returns the kick off for a huge 63 yard return. They finish the second quarter with a touchdown pass and go for 2 and make it in. The score is 14-12‚ H2O is still on top. H2O didn’t make it in the end zone but make a 46 yard field-goal so the score is now 17-11. Lithium couldn’t score before the half. Since Lithium chose to receive on the coin toss‚ H2O gets it to start the second half. H2O fails to score on
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