"Kcl kvl" Essays and Research Papers

Balancing Chemical Equations Answer Key Vocabulary: coefficient‚ combination‚ compound‚ decomposition‚ double replacement‚ element‚ molecule‚ product‚ reactant‚ single replacement‚ subscript Prior Knowledge Questions (Do these BEFORE using the Gizmo.) [Note: The purpose of these questions is to activate prior knowledge and get students thinking. Students are not expected to know the answers to the Prior Knowledge Questions.] The scouts are making s’mores out of toasted marshmallows‚ chocolate

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every parallel component is equal. Total resistance is sum of component resistances. Total resistance is equal to the reciprocal of the sum of the Sum of all voltage drops is equal component resistances’ reciprocals. to total applied voltage (KVL). MULTIMETER USAGE 1 PARALLEL CIRCUITS When measuring amperage‚ use series connection. --> CLASS 3 MA is always < 1 THERMODYNAMICS The study of the effects of work‚ heat flow‚ and energy on a system. Thermal energy: Kinetic energy

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beaker tongs safety glasses stand ring clamp wire gauze bunsen burner sparker 2 -250mL beakers 10mL grad cylinder 0.2M FeCl3 0.2M KSCN 0.2M KCl 0.2M Fe(NO3)3 6.0M NaOH CoCl26H2O 6.0M HCl water 0.1M K2CrO4 0.1M K2Cr2O7 1M NaOH 1M HCl 0.1M Ba(NO3)2 Procedure PART I 1. Use a 10mL

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to determine the lattice energy of KCl. H°(kJ) Sublimation of potassium K(s) → K(g) 89 Ionization energy of potassium K(g) → K+ (g) + e- 418 Bond energy of chlorine Cl2(g) → 2 Cl(g) 244 Electron affinity of chlorine Cl(g) + e- → Cl- (g) -349 Lattice energy of potassium chloride K+ (g) + Cl-(g) → KCl(s) ? Heat of formation of potassium chloride K(s) + ½ Cl2(g) → KCl(s) -437 a) -1537 kJ b) -663

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electrodes‚ one for cathode one for anode. 4. Set up the circuit as shown for each substance and observe the results. IV. Data table and observations SOLUTION | DOES IT CONDUCT? | + (ANODE) | - (CATHODE) | Potassium Chloride (KCl) | Yes | Bubbles | More bubbles than in anode | Glucose (C6H12O6) | No | Nothing changes | Nothing changes | Dilute Sulfuric Acid (H2So4) | Yes | Bubbles | Bigger bubbles | Sucrose (C12H22O11) | Yes | Light bubbles | Light but more visible

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distinguish between the gases H2 and NO2? H2is a colorless‚ odorless gas while NO2 has a reddish-brown color and has a pungent toxic odor. 8. Using water‚ how could you distinguish between the white solids KCl and PbCl2? You could distinguish them by their solubility. KCl is water soluble while PbCl2 is not. 9. Write equation for the decomposition of H2CO3 (aq) and H2SO3 (aq). H2CO3(aq) -------> H2O (l) + CO2 (g) H2SO3(aq) -------->H2O (l) + SO2 (g) Questions:

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percent of elemental oxygen present in it. To do this‚ the potassium chlorate must be heated to temperatures greater 400 °C‚ causing it to thermally decompose into potassium chloride and free oxygen: heat 2 KClO3 (s) Potassium Chlorate → 2 KCl (s) Potassium Chloride + 3 O2 (g) Oxygen Students will perform a quantitative analysis of the reactants and products of this reaction‚ measuring the initial mass of solid potassium chlorate used (before heating)‚ and the mass of the solid

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6 C) 7 D) 4 16) What volume of a 12.0 M HCl solution is needed to provide 0.6 mol of HCl? 16) ______ A) 12 mL B) 50 mL C) 5 mL D) 50 mL 17) Which is the strongest acid in aqueous solution? 17) ______ A) CH4 B) HNO2 C) KCl D) NH3 18) KCl is soluble in water but not in toluene this is

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Precipitation Titration Mohr Method Experimental The chloride ion (Cl-) is an important anion found in solids and solutions. In this experiment‚ the amount of chloride ion in an unknown sample J (NaCl + KCl mixture) of water using the Mohr method is determined‚ which relies on the solubility differences of two anions and the titration endpoint of a precipitate. The net ionic reaction during the titration is as follows: Ag+ + Cl- → AgCl(s) The Ksp for AgCl is 1.8 x 10-10 and

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gummy bear‚ which is composed mostly of sucrose with molten potassium chloride‚ a violent reaction occurs. A surprising amount of energy us released by the reactant‚ and in process‚ the atom and molecule rapidly rearrange to form 3 products(CO2/H2O and KCl). This reaction is said to be products favor. A favoured product reaction is where almost all of the reactants‚ react to form products. In this case its sucrose and potassium chlorate react completely to form carbon dioxide‚ water and potassium chloride

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