Examination #2 - Chapters 4‚5‚ and 6 Study Guide Chapter 4 - Chemical Quantities and Aqueous Reactions * Reactions Stoichiometry * mole-mole conversions * mass-mass conversions * Limiting Reactants * What is the Limiting Reagent * How do we find the L.R. * Solutions * Molarity - definition and how to calculate * Dilutions Calculations (M1V1 = M2V2‚ careful with M2) * Solution Stoichiometry * volume-volume conversions * volume-mass
Premium Chemistry Chemical reaction Chlorine
collection and processing Qualitative observation Before * Blue solution of copper sulfate * Grey zinc powder During * Blue color solution changes to greyish black * Heat is given out‚ so the surroundings become hotter. After * Grey powder remains on the sides of the cup * Precipitate formed at the bottom of the cup List of chemicals and apparatus used Chemicals used Copper sulfate solution‚ 1 mol dm-3 25g of zinc powder Apparatus needed Pipette‚ 25ml
Premium Thermodynamics Temperature Specific heat capacity
electrical energy. In the potato battery‚ there is a transfer of electrons between the zinc coating the galvanized nail that will be inserted into the potato and the copper wire that will be inserted another part of the potato. The potato conducts electricity‚ yet keeps the zinc ions and copper ions separate‚ so that the electrons in the copper wire are forced to move (generate current). It’s not enough power to shock you‚ but the potato can run a small digital clock. Materials for a Potato Clock You
Premium Battery Alessandro Volta Electrochemistry
Date Performed: January 10 & 15‚ 2013 Spectrophotometric Determination of the Equilibrium Constant of a Reaction R.J.V. Ortega and J.C.V. Gatdula Institute of Chemistry‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Received January 22‚ 2013 ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ABSTRACT -------------------------------------------------
Premium Chemical equilibrium Concentration Chemistry
chemical reactions Introduction: The aqueous solution of potassium peroxydisulphate can oxidize potassium iodide as follow: Equation: K S 0 (aq) + 2KI (aq)->2K S0 (aq)+I (aq) 2 2 8 2 4 2 KI(aq) +I (aq) -> KI (aq) 2 3 _________________________________________________ K S 0 (aq) +3KI(aq) -> 2K S0 (aq)+ KI (aq) 2 2 8 2 4 2 The rate law of this reaction can be represented as follow: Rate=k[S208 2-]^a [I-]^b When the concentration of peroxydisulphate ions is fixed‚ the order of reaction with respect
Premium Chemistry Chemical reaction
ADVERSE DRUG REACTIONS Lecture by Dr.Shehla Shaheen Adverse effect is a harmful and undesired effect resulting from the administration of a therapeutic dose of a drug. OTHER WORDS USED SYNONYMOUSLY; SIDE EFFECTS TOXIC EFFECTS HARMFUL EFFECTS UNDESIRABLE EFFECTS All drugs can produce harmful as well as beneficial effects. ADRs are either related or unrelated to the principal pharmacological actions of the drugs Adverse effects are of great concern to drug regulatory authorities.
Premium Pharmacology Adverse drug reaction
The first reaction time test is the reaction ruler. This test shows the speed of the occipital lobe and the motor cortex of the brain. The faster the reflex the faster the afferent and efferent pathway is. Subjects 1‚ 3 and 5 experienced reaction times that were under the average of 195.167 milliseconds. While Subjects 2‚ 4 and 6 experienced times that were over the average of the population. In general terms it could be said that subjects 1‚3 and 5 have better hand and eye coordination than subjects
Premium Chemical reaction Reaction rate Rate equation
The lab today was focused on finding the ratio of reactants to products to be either 1 to 1 or 1 to 2. In our case the reactants was Lead (II) Nitrate and Potassium Iodine. These two when mixed together make Lead Iodide and Potassium Nitrate. We also had to try and find if the number of moles of Lead(II) Nitrate was the same as the final number of moles for Lead Iodine after the experiment. Our data for the lab had pinpoint accuracy. Proved by the data table below Trials Volume of Pb(NO3)2 Mol
Premium Chemistry Chemical reaction Water
tetraamminecopper(II) ion by colorimetry. Anhydrous copper sulfate (CuSO4) is white‚ which means that it does not absorb light in the visible region of the spectrum. The hydrated copper sulfate (CuSO4 - 5H2O) is blue. The structure of the compound can be represented more accurately as Cu(H2O)4 SO4 - H2O where four water molecules are bound to the copper ion and the fifth is a water of crystallization. The water molecules are arranged at the corners of a square‚ with the copper at the center. Such an arrangement
Premium Ammonia Chemistry Copper
Julia Supangan blk. 2-4 The Reaction of Various Metals with Ionic Salts Purpose: To examine the reaction of various metals with ionic salts Materials: * 4 test tubes * test tube racks * 10mL measuring cylinder * 4 metals (in containers)- Zn‚ Sn‚ Mg‚ Fe * copper (II) sulphate solution Safety: 1. Be careful with copper (II) sulphate solution it is poisonous and corrosive. handle with care 2. Do NOT BREATH in any gases produced 3. If you touch any of the
Premium Copper Chemical element Chemistry