in this case‚ was 85% phosphoric acid. Dehydration can be defined as any chemical reaction which involves the removal of a water molecule from a substance. During the experiment‚ anhydrous calcium chloride was provided as a drying agent to ensure that pure cyclohexene was obtained‚ calcium chloride works by binding itself to the water molecule thus removing it in the process. After the dehydrating process was completed‚ a few tests using Potassium Permanganate solution and Bromine which were purple
Premium Chemistry Hydrochloric acid Distillation
in 6 moles of methane Number of Molecules = moles x molecules in 1 mole = 6 x 6.02 x 1023 molecules = 3.61 x 1024 molecules Calculate the number of molecules in: (a) 0.37 moles of sulphur dioxide (b) 3.4 moles of hydrogen chloride Answers (a) 2.23 x 1023 molecules (b) 2.05 x 1024 molecules Ions Ionic compounds do not contain atoms or molecules. Instead‚ we talk about ‘formula units’ The formula unit (f.u.) is the same as the chemical formula Calculate
Premium Oxygen Hydrogen Atom
3A‚ 3B‚ and 3C. Place five drops of sodium chloride in column 4A‚ 4B‚ and 4C. Record the color of a precipitate that has formed in the data table and “NR” if no precipitate has formed showing no sign of a reaction.Add a little water to each well and turn the well plate over on a paper towel. Throw the towel away and clean the plate. 1. H2CO3. 2. CaCl2 (aq)‚ H2CO3 (s). 3. Sodium Carbonate aqueous plus hydrogen Chloride aqueous yields Sodium Chloride plus Hydrogen Carbonate. 4. Well | Color
Premium Sodium chloride Solubility Chlorine
Effects of Electrical Stimuli and Injected Reagents on Frog Hearts Melissa Higdon Section 05‚ Group 01 November 19‚ 2013 Introduction: The heart is a very complex muscle for all species. It is responsible for sending oxygenated blood throughout the body as well as sending deoxygenated blood to the lungs‚ and continuously circulate this way for as long as we are alive. Many things can be effected‚ for example how fast the heart beats or how much
Premium Heart Blood Atrial fibrillation
Determination of Cations and Anions through Elimination and Confirmation Tests By: Symantha Resendiz Introduction A topic of great importance to all scientists is the identification of compounds‚ which is relevant in all aspects of their work in some way shape or form. Weather it may be determining what is causing sickness or what is polluting the air‚ it is very prevalent in the science world. In project 2‚ identification of cations and anions was preformed through a series of confirmation
Premium Ion Ammonia Solubility
zinc chloride solution. pentahydrate distill water 0.1 g of ammonium dichromate phenolphthalein tongs strip of magnesium spatula NaOH HCl sodium nitrate potassium chloride. magnesium
Premium Chlorine Chemical reaction Sodium
water into a measureable solid Materials: balance (.001g)‚ 100ml beakers‚ graduated cylinder‚ drying oven‚ Na2CO3 (sodium carbonate)‚ stir rod‚ scoopula‚ DI water‚ watch glasses‚ filter paper‚ ring stand‚ funnel‚ water samples with CaCl2 (calcium chloride) Procedure: 1. Measure out a 20ml sample of each A‚ B‚ and C hard waters 2. Place samples in separate beakers 3. Add .500g of sodium carbonate to each water sample beaker (absolute maximum concentration is considered to be 180 mmole‚ so this
Premium Calcium Water Sodium
looked for precipitants that were formed from the mixing of the different substances. We used barium nitrate‚ potassium hydroxide‚ sodium sulfate‚ magnesium nitrate‚ aluminum sulfate‚ and iron (III) chloride in set one. In set two we used potassium chloride‚ sodium hydroxide‚ magnesium nitrate‚ barium chloride‚ sodium sulfate‚ and magnesium sulfate. For each set‚ we mixed two drops of one compound in five wells of a spot plate. We then added two drops of all the other substances to the compound. We repeated
Premium Sodium chloride Chlorine Sodium hydroxide
precipitation reaction. Salt Solubility in water Li+‚ Na+‚ K+‚ NH4+ All salt dissolve in water Nitrate‚ NO3- All nitrate salt dissolve in water Chloride All chloride salt dissolve dissolve in water except; PbCl2 - lead(II) chloride (dissolve in hot water) AgCl - argentums/silver chloride HgCl - hydroargentum chloride‚ mercury chloride Sulphate All sulphate salt dissolve in water except; PbSO4 ‚ BaSO4 ‚ CaSO4 Carbonate All carbonate salt not dissolve in water except;
Premium Sodium chloride Solubility Chlorine
Sodium Chloride ionic lattice Born-Haber Cycles (named after Fritz Haber and Max Born) are simply energy / enthalpy cycles that show how ionic compounds are formed from their constituent elements. They are useful because they allow lattice enthalpies to be calculated theoretically using empirical data (observations and data collected from experiments). 1|P a g e Definitions involved in calculation of lattice enthalpy of NaCl ∆Hf° standard enthalpy of formation of sodium chloride. The
Premium Ionic bond Ion Sodium chloride