Magnesium‚ Zinc‚ Iron‚ Lead and Copper. In descending order. B. Before Copper in descending order. C. If a reaction takes place then the metal displaces the original metal. D. 1. 0 2. +2 3. -1 4. 0 5. +2 6. -1 7. and 8. Iron is the reducing agent so it is oxidized and Nickel is the oxidizing agent so it is reduced. Table: Substances Observations Magnesium and Sodium Sulfate Bubbles Zinc and Magnesium Sulfate No reaction Lead and Zinc
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drops of the following solutions into seven wells in rows A through E: cobalt (II) nitrate‚ copper (II) nitrate‚ iron (III) nitrate‚ barium nitrate‚ and nickel (II) nitrate. Afterward‚ two drops of each of sodium phosphate‚ sodium iodide‚ sodium sulfate‚ sodium chloride‚ sodium bicarbonate‚ sodium carbonate and sodium hydroxide were added to the five vertical wells under columns 1-7. |cobalt(II)nitrate|copper(II)nitrate|iron(III)nitrate|barium nitrate|nickel(II)nitrate| sodium phosphate|Precipitated
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Cobalt (II) Nitrate‚ 0.1 M - 2 mL in Pipet1 Copper (II) Nitrate‚ 0.1 M - 2 mL in Pipet‚ 1 Iron (III) Nitrate‚ 0.1 M - 2.5 mL in Pipet‚ 1 Nickel (II) Nitrate‚ 0.1 M - 2 mL in Pipet‚ 1 Sodium Bicarbonate‚ 0.1 M - 2 mL in‚ Pipet‚ 1 Sodium Carbonate‚ 0.1 M - 2 mL in Pipet‚ 1 Sodium Chloride‚ 0.1 M - 2.5 mL in Pipet‚ 1 Sodium Hydroxide‚ 0.1 M - 2 mL in Pipet‚ 1 Sodium Iodide‚ 0.1 M - 2.5 mL in Pipet‚ 1 Sodium Phosphate‚ 0.1 M - 2 mL in Pipet‚1 Sodium Sulfate‚ 0.1 M - 2.5 mL in Pipet CAUTION! Sodium hydroxide
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6.02 x 1023 atoms Ca 1 40.01 g Ca 1 mol Ca atoms 3. What is the mass of 6.20 moles of potassium iodide? Mol( grams 4. How many moles are contained in 84.2g of potassium sulfate? 5. Calculate the number of molecules in 3.34 moles of carbon dioxide. 6. What is the mass of 3.01 x 1023 atoms of sulfur? 7. What is the mass of 2.41 x 1024 molecules of water? 8. What is the formula mass (molar
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In this lab we tested the purity of water by looking for the chemicals free chlorine‚ chloride‚ sulfate‚ nitrate‚ copper‚ total hardness‚ iron‚ hydrogen sulfide‚ lead‚ pesticides‚ pH‚ total alkalinity‚ and total chlorine inside a water sample. The chemicals that produced a 0.0 result meant that there was no trace of that chemical inside the sample. The chemicals not found were copper‚ hydrogen sulfide‚ free chlorine‚ lead‚ iron‚ pesticide‚ and total chlorine. As a class we found the results of
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remain after the reaction comes to an end. An understanding of chemical equilibrium and how it can be manipulated is essential for anyone involved in Chemistry and its applications. Iron-Silver Equilibrium In the first phase of the experiment‚ iron sulfate was mixed with silver nitrate‚ and the reaction produced solid silver and iron nitrate‚ which is formally written as Fe2+ (aq) + Ag+ (aq) ⇄ Ag (s) + Fe3+ (aq) It has a net equation of: Fe2+ (aq) + Ag+(aq) ↔ Fe3+(aq) + Ag(s) The mixture was then
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *8621469522* COMBINED SCIENCE CO-ORDINATED SCIENCES Paper 6 Alternative to Practical 0653/06 0654/06 May/June 2009 1 hour Candidates answer on the Question paper No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams‚ graphs
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(constant) ∙mass of reactant used (mass is less that 3g) When we consider a double displacement reaction; we will need to think about the solubility rules. In our experiment we consider the rule that "Most nitrate (NO3-) salts are soluble." And "Most sulfate are soluble. Notable exceptions are BaSO4......" By this rules we can check the solutions that we will use during the experiment that whether it is soluble or not. Also‚ we can check after the reaction‚ which of the compound is the precipitate. Hence
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1%) 3. For the hydrate sodium sulfate decahydrate‚ calculate the following: (a) the percent of sodium (by mass) in the hydrate (14.3%) (b) percent of TOTAL oxygen (by mass) in the hydrated compound. (69.6%) (c) Percent of water (by mass) in the hydrate (55.9%) 4. Calculate the percentage of nitrogen (by mass) in the ammonium nitride (82.4%) Moles Worksheet 1. How many moles are there in 768 grams of iron (III) sulfate?(1.92 mol) 2. How many moles are there
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passed through them. For electrolysis to work‚ the ions must be free to move. Ions are free to move when an ionic substance is dissolved in water or molten (melted). For example‚ if electricity is passed through copper chloride solution‚ the copper chloride is broken down to form copper metal and chlorine gas. Here is what happens during electrolysis: Positively charged ions move to the negative electrode during electrolysis. They receive electrons and are reduced. Negatively charged ions move
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