the electroactivity series affect the overall voltage of the galvanic cell? Background Information: The voltaic cell converts chemical energy to electrical energy to generate electricity. There are usually 2 electrolytes used containing spectator metal ions. A salt bridge is used to connect the 2 electrolytes in order to enable the transfer of ions. Circuit is connected from electrode to electrode for mobile electrons to pass through. A galvanometer is always used to detect the electron flow of voltaic
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Questions: 1. H H H C C H H C C H C H H C H H Compound A Compound A is an intermediate compound found in a production plant attempting to synthesise n-hexane. a) List three physical properties of alkynes. b) Give the IUPAC name of compound A. [3 marks] [2 marks] c) There are several ways to form the final product from Compound A. An operator has decided to use Pt catalyst to react with Compound A. Write the complete chemical reaction equation. [3 marks] d) The quality assurance manager of the production
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Arenes The aromatic hydrocarbons also have the name arenes. They contain in their molecule one or more cycles made up from 6 carbon atoms. When the molecule is formed out of a single cycle‚ the hydrocarbons are mono nucleuses; when the molecule contains more than one cycle‚ the hydrocarbons are poly nucleuses. The simplest aromatic hydrocarbon‚ benzene‚ is compound out of just one such cycle; its formula is C6H6. The representation of benzene through a cycle of 6 carbon atoms with 3 double bounds
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Philippines is the Coco Jam. It is made from a base of coconut and sugar. In line with this‚ my proposed product “calamansi jam” is of the same kind with coconut jam and their only difference is the usage of calamansi instead of coconut base. 2. onion extrcts as coackroach killer Onion and Calamansi Extracts as Coackroach Killer ABSTRACT Cockroaches are the most noted pests insects due to their population.
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percent composition 2. Learn how to get the percent using oxidation reduction and double reactions 3. To become more familiar with the use titration techniques 4. To learn how to get the salt out of an quimical Background: To develop and utilize procedures to determine the percent composition‚ of ZnCI2. As well titrating with NaOH solution. After all the experiment we got hta salt witch we weighted and we got our results. Experiment reactions: .33w of Zn(OH)2 x moles Zn(OH)2/m. moles Zn(OH2)
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atoms are contained in 2.3g of C2H5OH. [2] 2.3 x 1023 Hydrogen Atoms - 2.3g * 1mol/6.06g * 6.02 1023 / 1mol 2. An oxide of sulfur contains 60% by mass of oxygen. Determine the empirical formula of the compound. [2] 3. Ethylene glycol‚ the substance used in automobile antifreeze‚ is composed of 38.7 g carbon‚ 9.7 g hydrogen‚ and 51.6 g oxygen. a. What is the empirical formula of the compound? [2] b. If its molar mass is 62.1 g/mol‚ what is the
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(n= 1 in the Bragg equation)‚ What is the interlunar spacing of silicon? nλ = 2d sin θ 1(154) = 2d sin 14.22 154 = 2d (0.245) 2d = 626.92 d = 313.46 2. A topaz crystal has an interplanar spacing (d) of 1.36 Å (1 Å = ). Calculate the wavelength of the X ray that should be used if θ = 15.0° (assume n = 1) nλ = 2d sin θ 1(λ) = 2(1.36) sin 15 λ = 2(1.36)(0.258) λ = 0.704
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of limescale without damaging any household surfaces. It is also non-toxic as it is an natural acid. it is a weak acid it takes a long time to remove heavy build-up of lime scale. It comes in a power form so takes longer because it has to dissolve. (2)
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name of metal first. 2. Name of non-metal second‚ BUT change ending to IDE. I.E. NaCl Sodium Chloride IONIC COMPOUND WITH MULTIVALENT 1. Full name of the metal‚ write in the Roman numeral to indicate the valence in brackets. 3. Name of non-metal second‚ BUT change ending to IDE. I.E. FeCl3 Iron (III) chloride BINARY COVALENT COMPOUNDS Two nonmetals 1. Name each element. (the element furthest to the left on the periodic table is written first). 2. End the last element
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Hypothesis: If the mass and volume of a substance increase‚ then the density will increase as well. Materials: 100 mL graduated cylinder Paper towels Copper bb’s Electronic balance Pre-Lab Questions: 1) The density of copper is 8.92 g/mL. 2) The density of steel is 7.85 g/cm³ 3) There is only one type of copper‚ so the density should be one specific density. However‚ there are multiple grades of steel‚ so the value of the density can vary. 4) If you determine the density by using a graphical
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