Chemistry, 29.01.2021 16:00 briyantesol
Step 1: Materials Steps 2 and 3 2 inch piece of calcium carbonate (white chalk) 25 mL 1M hydrochloric acid mortar and pestle spoon 50 mL beaker Step 4 40 mL water 100 mL beaker hot plate hot pad Step 5 2 g copper sulfate pentahydrate spoon crucible crucible tongs clay triangle tripod Bunsen burner Steps 6 1 spoonful iron filings 1 spoonful powdered sulfur spoon (2) petri dish magnet Step 7 25 mL 0.1M potassium iodide 10 mL 0.1M lead nitrate 50 mL beaker 25 mL graduated cylinder Step 8 25 mL 1M hydrochloric acid 3 cm magnesium ribbon (2) 50 mL beaker thermometer tweezers Step 9 1 candle on dish matches Step 2: Calcium carbonate a) Place a 2-inch piece of calcium carbonate (from chalk) in a mortar. Crush the calcium carbonate with the pestle. b) Record all changes observed, the type of change, and your reasoning in the data table. c) Keep for Step 3. Step 3: Calcium carbonate and hydrochloric acid a) Pour approximately 25 mL of 1M hydrochloric acid into a 50 mL beaker. b) Use the spoon to add crushed calcium carbonate from Step 2 to the hydrochloric acid. c) Record all changes observed, the type of change, and your reasoning in the data table. d) When finished, dispose of the mixture by pouring it into a receptacle provided by your teacher. Step 4: Water a) Fill a 100 mL beaker with 40 mL of water. Note its physical characteristics. b) Using a hot plate, heat the water until it boils. c) Record all changes observed, the type of change, and your reasoning in the data table. d) Use the beaker tongs to remove hot beaker from hot plate and place on a hot pad. e) Turn off the hot plate and dispose of the water in a drain. Step 5: Copper sulfate pentahydrate a) To allow heating, place the clay triangle on top of the tripod and position the Bunsen burner under the tripod. b) Measure 2 g (approximately 1/2 tsp.) of copper sulfate pentahydrate in a crucible. Note its physical characteristics. c) Place the crucible on the clay triangle. Student Guide (continued)
Answers: 2
Chemistry, 22.06.2019 07:50, carlosiscr7
Many reactions take place in aqueous solution. when potential reactants are mixed, a reaction will occur if there is some driving force that favors the formation of products. it is often convenient to categorize reactions in terms of these driving forces: precipitate formation, in which an insoluble solid is formed, weak electrolyte formation, as in a neutralization reaction involving water, or transfer of electrons, as in a redox reaction. these reactions can be represented by full molecular equations, which contain all species in the reaction mixture, or by net ionic equations, which show only the species that actually undergo a change. the latter does not contain the spectator ions, which do not undergo a net change or do not take part in the reaction. part a when the following two solutions are mixed: k2co3(aq)+fe(no3)3(aq) the mixture contains the ions listed below. sort these species into spectator ions and ions that react. drag the appropriate items to their respective bins. view available hint(s) spectator ions ions that react part b what is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? assume that the contribution of protons from h2so4 is near 100 %.ba(oh)2(aq)+h2so4(aq)→ express your answer as a chemical equation. view available hint(s) nothing provide feedback
Answers: 3
Chemistry, 22.06.2019 09:00, krystalhurst97
How are isotopes of the same chemical element alike? how are they different?
Answers: 1
Step 1: Materials Steps 2 and 3 2 inch piece of calcium carbonate (white chalk) 25 mL 1M hydroch...
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