if they were Single Displacement‚ Double Displacement‚ Synthesis‚ Decomposition and Combustion. A.) Aluminum and Copper (II) Chloride‚ my hypothesis is a Single Displacement. B.) Calcium Carbide and Water‚ my hypothesis is a Double Displacement. C.) Zinc and Hydrochloric Acid‚ my hypothesis is a Single Displacement. D.) Alcohol and Oxygen‚ my hypothesis is a Combustion. E.) Lead (II) Nitrate and Potassium Iodide‚ my hypothesis a Double displacement. F.) Copper and oxygen‚ my hypothesis is a synthesis
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dropper bottle‚ 1 Magnesium Metal pieces - 6-8 in bag 2"x 3"‚ 1 Magnesium Oxide powder - 0.5 g‚ 2 pipet‚ empty short stem - labeled "HCL‚" & "NaOH"‚ 1 Sodium Chloride in vial – full‚ 1 Sodium Hydroxide‚ 6 M - 4 mL in dropper bottle‚1 Zinc‚ Mossy - 6-8 Pieces‚ Bag 2"x 3" Procedure: 1. Half-fill one well of a 24-well plate with 6 M HCl and half-fill a second well of the 24-well plate with 6 M NaOH. Suck up these chemicals into their labeled pipets for later use
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○ if it was nh4no3 it would not form precipitate when you add agno3 im pretty sure ○ What else can we say about NH4Cl? ○ was there bubbles with hcl? if so‚ then it can be co3 2 (carbonate) ● Unknown 6 ● KOH ○ basic ○ flame test ○ did not react with naoh therefore it can contain oh‚ i guess ● Unknown 7 ● HCl ○ ○ ○ ○ ● Unknown 8 ● Ca(OH)2 ○ was soluble with naoh therefore
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investigation‚ hydrochloric acid solution is used which is toxic by all routes of exposure and is also a lung irritant. To avoid harm and ensure safety‚ eye protection and skin protection must be used. Equipment: * Metal tongs * Bunsen Burner * Zinc * Lead * Magnesium * Iron * Tin * Aluminium * Copper * Splint * 50 Ml Hydrochloric acid solution * 8 Test tubes * Measuring Cylinder * Beaker Method: Part A: Reaction of Metals with Oxygen 1. Hold each
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SrCl2 → d. FeCl3 + KOH → e. HCl + AgNO3 → f. K2SO4 + Ba(NO3)2 → 7. (Brown 4.21) Will precipitation occur when the following solutions are mixed? If so‚ write a balanced chemical equation for the reaction. a. Na2CO3 and AgNO3 b. NaNO3 and NiSO4 c. FeSO4 and Pb(NO3)2 8. (4.22 Brown) Identify the precipitate (if any) that forms when the following solutions are mixed‚ and write a balanced equation for each reaction a. NaCH3COO and HCl b. KOH and Cu(NO3)2 c. Na2S and CdSO4
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people food‚ but food like real chicken‚ turkey‚ beef‚ bison‚ venison‚ lamb‚ fish‚ some fruits and vegetables‚ occasionally yogurt and eggs. Vitamins and best sources Vitamin A Palmitate Vitamin B-1 Thiamine Hcl & Yeast Vitamin B-2 Riboflavin & Yeast Vitamin B-6 Pyridoxine Hcl & Yeast Vitamin B-12 Cyanocobalamin & Yeast Vitamin D D-activated Sterol Vitamin E dl-alpha tocopherol acetate Niacinamide Biotin Folic Acid D-Calcium Pantothenate Para Amino Benzoic Acid Minerals
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M.M :40 Note : all questions are compulsory . Section A Q.1 By what other name is the unit coulomb × volt ? 1 Q.2 What do the symbols { } { } mean in electric circuit? Q.3 Balance the reaction CuO + HCl → CuCl2 + H2O Q.4 Name the process in which plants release CO2 . Q.5 what is displacement reaction? Give an example of is displacement reactions? Q.6 Write the differences between Autotrophic and parasitic nutrition. Q.7 An electric
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three beakers (250 mL or 400 mL)‚ distilled water bottle‚ glass rod‚ dropping pipette‚ vial containing unknown solution. CHEMICALS: • Aqueous solutions of Ca2+‚ Ba2+‚ Mg2+‚ Zn2+ and Al3+ • 1 M Na2SO4 (aq) • 6 M NaOH (aq) • 6 M HCl (aq) • 6 M NH3 (aq) • 1 M HCl (aq) • 0.25 M Ammonium oxalate‚ (NH4)2C204 (aq) • 0.1 M NaH2PO4 (aq) • 0.1 M Na2S (aq) PROCEDURE: Part A: Preliminary Observation Doing the Experiment
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Acid Property #1: The word acid comes from the Latin word acere‚ which means "sour." All acids taste sour. Well known from ancient times were vinegar‚ sour milk and lemon juice. Aspirin (scientific name: acetylsalicylic acid) tastes sour if you don’t swallow it fast enough. Other languages derive their word for acid from the meaning of sour. So‚ in France‚ we have acide. In Germany‚ we have säure from saure and in Russia‚ kislota from kisly. Base Property #1: The word "base" has a more complex
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fruit’s spoilage‚ were tested on the KaBaPine combination. The test results revealed that there was no significant difference between the voltage produced by pure KaBaPine and those produced by KaBaPine combined with basic or acidic solutions. Using zinc containers of old size C dry cell the contraptions were constructed. The KaBaPine was placed inside as the new electrolyte. The copper wire was soldered to the base of the cap and was used to seal the cell to replace the carbon rod in common dry cells
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