Write the word equatin: of the following chemical equations and identify the type of reaction: 1. Zn + Br2 2. HNO2 3. ВаCle 4. Fe 5. Mg + ZnBr2 КОН + KNO3 + H20 NaCl + BasO, + FeO MgCl2 +H2 Na2SO4 + O2 HCI
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- Yttrium (III) carbonate (MM = 357.84 g/mol) has a Ksp of 1.0 x10-31. If 15.5 g Y2(CO3)3 is stirred into 2.16 L H2O, how many micrograms of yttrium (III) carbonate will dissolve?Report your answer to the nearest whole number.Why are we adding NH3 and write down the net reaction. CALCIUM PEROXIDE OCTAHYDRATE (CaO2.8H2O) SYNTHESIS CaCO3 + 2 HCl --> CaCl2 + CO2 + H2OCaCl2 + 2 NH3 + H2O2 + 8 H2O --> CaO2.8H2O + 2 NH4+ + Cl- 5 g of pure CaCO3 is added in small portions to 10 mL of water and 20 mL of 18% HCl in a 100 mL beaker and mixed with a bottle. During this process, the mixture should be boiled in order to remove the CO2 formed. When the CaCO3 addition is complete, it is observed that a sufficient amount of precipitate is formed at the bottom of the container. The solution is filtered while hot, the excess water is evaporated and cooled with ice water. Thereupon, he says 25-30 mL of 6% H2O2 solution, 5 mL. NH3 and 100 mL water are gradually added with stirring. After stirring for a while, the crystals formed are filtered, washed several times with water and dried in a desiccator.Na2SO3Na2SO3 reacts with HClO4HClO4 according to the reaction Na2SO3(aq)+2HClO4(aq)⟶2NaClO4(aq)+H2O(l)+SO2(g)Na2SO3(aq)+2HClO4(aq)⟶2NaClO4(aq)+H2O(l)+SO2(g) You wish to provide a 50% excess of 6.866.86 wt% aqueous HClO4HClO4 to react with 30.030.0 mL of 0.05870.0587 M Na2SO3Na2SO3. Calculate the mass of the 6.866.86 wt% aqueous HClO4HClO4 solution required to provide the 50% excess. mass: g
- A commercial product designed to prevent cut fruit from turning brown contains a mixture of ascorbic acid (HC6H7O6) and sugar (C12H22O11). Calculate the percent (w/w) of ascorbic acid in this product if a 2.1994 g portion of this product requires 36.15 mL of 0.2328 M NaOH to reach a phenolphthalein endpoint. MM HC6H7O6: 176.12 MM NaOH: 40.00Part A) A 10.0 mL sample of 0.250 mol/L NiF2(aq) is mixed with 20.0 mL of 0.0900 mol/L NaOH(aq) and then diluted to a final volume of 100. mL.Calculate the concentration of Ni2+ ions in the 100 mL mixture before the reaction starts. Express your answer to three significant figures.ksp: 5.48e-16Balance these equations by providing the missingcoefficients:(a) __ Fe1s2 + __O21g2¡__Fe2O31s2(b) __ Al1s2 + __ HCl1aq2¡__ AlCl31aq2 + __ H21g2(c) __ CaCO31s2 + __ HCl1aq2¡__ CaCl21aq2 +__ CO21g2 + __ H2O1l2
- Room temperature: 295.9 K Barometric pressure: 769.0 mmHg Vapor of water: 21.1 mmHg Volume of O2 collected: 59.20 mL Density of H2O2: 1.01 g/mL % Composition H2O2: 3.02 % Volume of H2O2 used: 5.00 mL Letter of the unknown solution of H2O2: C Volume of O2 collected for the unknown: 64.90 mL Based on the reaction stoichiometry, calculate the number of moles of O2.Cinnamon is made up of a mixture of many compounds. Cinnamaldehyde is the component responsible for cinnamon flavor. Several of these compounds are also a potent antimicrobial compounds present in essential oils. The following results were obtained for known concentrations of three of the compounds. Concentration (mg sample/200 uL) Cinnamaldehyde Eugenol Thymol 0.50 0.4 0.65 1.8 0.75 1.0 0.8 1.10 1.2 1.25 2.0 1.30 3.0 1.50 1.5 1.90 3.1 2.0 4.6 2.50 4.0 5.8 Determine the calibration curve equations for each component including regression. which component has the highest calibration sensitivity? A sample containing the three essential oils in part b gave the peak areas relative to the internal standard of cinnamaldehyde 2.6, eugenol 0.9 and thymol 3.8. Determine the concentration of each of the oils in the sample and the standard deviations.Calculate the maximum mass (in g) of AgCl lost in a chloride analysis as a result of washing the of silver chloride with 130 mL of water at room temperature. (Note: Ksp for silver chloride is 0.000000000160. Pay attention to the sig.fig. in your calculation. Keep three sig.figs. in the answer.)