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Determine the type of reaction and record its classification
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- A B |· | D E NaOH H₂O NH3 KF CH3NH2Imagine that you are given 0.2500 g of a sample of copper(II) sulfate pentahydrate (CuSO4 • 5 H2O). You very carefully heat the compound for an extended period of time to drive off water, after which you determine the mass of the remaining solid to be 0.1598 g. Determine whether the data given confirm the formula of the hydrate. You must show any relevant calculationConsider the general chemical equation 3A+B 2C.
- To help farmers and gardeners, commercial fertilizers have a big three-number "NPK" label on the bag that gives the amounts of three key plant nutrients: nitrogen, phosphorus and potassium. For example, a bag of "10-10-10° fertilizer has 10% by mass nitrogen, 10% by mass potassium as potash (K₂O), and 10% by mass phosphorus as phosphate (P₂O). Suppose a certain fertilizer has the following composition: Ingredient * ((NH,),CO) potassium sulfate (K,SO₂) potassium chloride (KC1) 0% urea inert ingredients percent by mass 40% 15% What should the first (nitrogen) number on the bag label be? That is, calculate the percent by mass of nitrogen in this fertilizer. Round your answer to the nearest percent. D.P 9% 36% E GThe refining of aluminum from bauxite ore (which contains 50.% Al2O3 by mass) proceeds by the overall reaction 2Al2O3 + 3C ® 4Al + 3CO2. How much bauxite ore is required to give the 5.0 ´ 1013 g of aluminum produced each year in the United States? (Assume 100% conversion.)Aspirin can be prepared from salicylic acid (C7H6O3 ), which has a molar mass of 138.12 g/mol, and acetic anhydride (C4 H6 O3), which has a molar mass of 102.04 g/mol. The density of acetic anhydride is 1.082 g/mL. C;H,O3 + C4H6O3 → C9HgO4 + C2H3O2 What is the theoretical yield, in grams, of aspirin (C9H3O4), which has a molar mass of 180.15 g/mol, possible when reacting 3.06 g of salicylic acid with 3.71 mL of acetic anhydride? Type answer:
- You may mark all of the following directly on this one structure if you make a color coded key that is EASY for me to follow: Salpha carbons color: 8chiral carbons color: 8anomeric carbons color: Speptide bonds: 1. 2. 3. 4. Draw structure: Explanations for why any of the above NOT present: 5. 10Does your structure have the ability to form a (circle): hemiacetal or acetal or neither if methanol is added in the presence of heat and acid? Draw the product.Some salts make hydrates when there is moisture around. Some hydrate samples can absorb lights in visible legion. Therefore, they show some colors. Thus, hydrates can be used to detect the moisture in the environment. Let's say you are working in a laboratory with a group and you are the only student who has taken chemistry courses. Your laboratory received a sample of cobalt(II) chloride which has the formula CoCl2·xH2O. Let's say your boss asked you to find the formula of this hydrate salt sample since you are the only chemist there. From your laboratory experience, simply explain the experimental procedure you would follow to find the formula of this unknown sample. Then, use the given data for the calculation part. Mass of crucible: 32.27g Mass of crucible + unknown hydrate: 33.92 g Color of unknown hydrate: purple Mass of crucible + anhydrous form of hydrate: 33.41 g Color of anhydrous form: sky blueNH3CI Br xs NaOH
- You wish to prepare 211 grams of 16.6 % Mg(CH3CO0)2. You will need grams of magnesium acetate and mL of water. Assume that the density of water is 1.00 g/ ml.You carefully weigh out 15.00 gg of CaCO3CaCO3 powder and add it to 60.75 gg of HClHCl solution. You notice bubbles as a reaction takes place. You then weigh the resulting solution and find that it has a mass of 69.60 gg . The relevant equation is CaCO3(s)+2HCl(aq)→H2O(l)+CO2(g)+CaCl2(aq)CaCO3(s)+2HCl(aq)→H2O(l)+CO2(g)+CaCl2(aq) Assuming no other reactions take place, what mass of CO2CO2 was produced in this reaction?Many solids used in the lab come with different variations for different purposes. For example, EDTA has a formula of C1oH16N2O8 (292.2438 g/mol) but to improve the solubility of EDTA in water, the one we used in the lab is EDTA disodium salt dihydrate "C10H14N2N22O8 •2H20 " (Molar mass: 372.24 g/mol)where there are two sodium atom and two water molecule attached to the EDTA, therefore, when calculating the molar mass of EDTA, we need to add the mass of two sodium atoms and two water molecule mass. Calculate the molar mass of Iron(III) chloride hexahydrate: FeCl3• 6H20. O 162.29 g/mol 180.29 g/mol 270.29 g/mol O 17527 g/mol