any of the reactions above are observed it is known that a reaction has taken place. (1) A + B →AB (2) A + BC→AC + B (3) AB + CD→AD + CB (4) Hydrocarbon + O2→CO2 + H2O Experimental In this synthesis reaction‚ a small piece of copper wire was obtained. The copper wire was held with crucible tongs over a bunsen burner and the reaction 2Cu + O2→2CuO was observed. In the second synthesis reaction‚ a small piece of magnesium ribbon was held over a bunsen burner with crucible tongs. After the reaction
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Task 2 Legislation (P2) (M1) The Government produced the legislation ‘Manual Handling regulations 1992’; they produced this legislation to help protect staff and service user from harming themselves. In health and social care settings managers produce a policy to help prevent accidents and harm coming to their staff and the service users who come into the hospital. To help control the legislation certain lifting techniques of patients were banned due to future problems with back problems of staff
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Maranatha Christian Academy Imus Chapter “Used Cooking Oil as an Additive Component of Candle” “An Investigatory Project Proposal” In partial Fulfillment for the Requirements in science III (Chemisty) Submitted by : Kathleen Acuna Marvin Lou Carreon Clarisse Sevilano Introduction Today‚ candles are made not only for lighting purposes but for many other uses such as home decor‚ novelty collections‚ as fixtures for big occasions (weddings‚ baptismals‚ etc.)‚ and as scented
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HYPOTHESIS: Perhaps by using the flame test or reacting salt x with NaOH‚ or NH4OH the cation could be distinguished by observing the color changes or solubility while reacting salt x with H2SO4 or a mixture of copper turnings and concentrated sulphuric acid the anion of the salt could be found. AIM: To determine the constituents of salt x. APPARATUS/MATERIALL: * Salt x * Concentrated hydrochloric acid * Concentrated sulphuric acid * Platinum wire * Bunsen burner * 2 test
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Write a critical appreciation of Barbara Kingsolver’s “The Lacuna”. Barbara Kingsolver’s extract demonstrates a key number of themes relating to the divide between the land and the sea‚ personifying the fish in the sea and dehumanising the people on land‚ pushing the boundaries between both worlds. The comparisons between the fish and the humans reflect society as a whole and the problems that plague us. The underlining theme that essentially becomes the most important in the given extract is that
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This phrase could very well have been the headline of the essay written by Eula Biss. However the headline ”Time and Distance Overcome” does the essay well. Eula Biss explains the progress from no communication but physical to a web of telephone wires and how the invention of the telephone served the civilization - or most likely did not. There might be a difference between civilization and civilized. To most people‚ the civilization is associated with the urban city‚ or at least their own‚ (to
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be determined. Materials: Chemicals: Silver Oxide‚ 0.5g Equipment: Balance‚ 0.001-g or 0.0001-g precision Bunsen Burner Clay pipestem triangle Crucible and cubicle lid‚ 15- or 30-mL Crucible tongs Ring stand and ring clamp Watch glass Wire gauze with ceramic center Pre Lab Questions 1. Use molar mass of iron to convert the mass of iron to moles. 85.65g/55.9g 1.534 moles of Iron were used 2. According to the law of conservation of mass‚ what is the mass of oxygen that reacts
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be extremely toxic for aquatic organisms‚ so finding it in soil can be alarming‚ especially if it is in large quantities. I have found that unknown sample B iron(iii) sulphate. I have identified it to be iron as it gave a yellow colour during the flame test narrowing it down to be barium or iron(iii). It then produced a yellow precipitate during sodium hydroxide test showing that it was iron(iii) instead of barium. The chemical equation for this reaction is: Fe2(SO4)3(aq) + NaOH(aq) Fe(OH)3(s)
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tube of liquid broth. Answer: To aseptically transfer bacteria from an unknown to a tube of liquid broth you have to flame the loop or wire before you begin to sterilize it. Then you remove the caps from the tubes and flame the mouths of the tubes to prevent air-borne contamination. Next‚ you have to pick up the inoculums or unknown culture by running the sterile loop or wire down into the tube. Once you get the inoculums‚ you drop it into the sterile medium to inoculate it. 2. What is the purpose
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Decomposition of Sodium Chlorate Mass‚ Moles‚ and the Chemical Equation Introduction: Sodium chlorate is used as a source of oxygen in emergency oxygen generators. So-called oxygen canisters or oxygen candles are found on airplanes‚ submarines‚ even the space station–anywhere where oxygen might be in short supply in case of an emergency. Sodium chlorate decomposes upon heating or in the presence of metals to give oxygen gas. What the chemical equation for the decomposition of sodium chlorate
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