Using the following equation: Fe:O:(s) + 3H:(g) → 2Fe(s) + 3H:O(1) How many grams of iron,Fe, can be made from 6 g H2? MM (H2) = 2g/mol and MM (Fe) = 56 %3D g/mol * 56 g O 112 g O 168 g O 12 g
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Q: How many atoms of C there in 98.2 grams of Bi(C2H3O2)3 (MW = 386.1125)
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Q: In the replacement reaction of magnesium nitrate with tin, how many grams of tin(IV) nitrate would…
A: For the reaction., 2 Mg(NO3)2 + Sn → Sn(NO3)4 + 2 Mg Given Mass of magnesium nitrate = 89.5 mg
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- 3.68 Magnesium is lighter than other structural metals, so it is increasingly important in the design of more efficient vehicles. Mg2+ ions are present in seawater, and the metal is often prepared by "harvesting" these ions and converting them to Mg metal. The average magnesium content of the oceans is about 1270 g Mg2+ per ton of seawater, and the density of seawater is about 1.03 g/mL. What is the molarity of Mg2+ ions in seawater? The design for a concept car calls for 103 kg of magnesium per vehicle. How many gallons of seawater would be required to supply enough magnesium to build one of these ears?3.83 For the reaction of nitrogen, N2, and hydrogen, H2, to form ammonia, NH3, a student is attempting to draw a particulate diagram, as shown below. Did the student draw a correct representation of the reaction? If not, what was the error the student made?A soft drink contains an unknown mass of citric acid, C3H5O(COOH)3. It requires 6.42 mL of 9.580 × 10−2-M NaOH to neutralize the citric acid in 10.0 mL of the soft drink. C3H5O(COOH)3(aq) + 3 NaOH(aq) → Na3C3H5O(COO)3(aq) + 3 H2O(ℓ) Determine which step in these calculations for the mass of citric acid in 1 mL soft drink is incorrect? Why? n (NaOH) = (6.42 mL)(1L/1000 mL)(9.580 × 10−2 mol/L) n (citric acid) = (6.15 × 10−4 mol NaOH) × (3 mol citric acid/1 mol NaOH) m (citric acid in sample) = (1.85 × 10−3 mol citric acid) × (192.12 g/mol citric acid) m (citric acid in 1 mL soft drink) = (0.354 g citric acid)/(10 mL soft drink) Determine the correct result.
- A chemical plant uses electrical energy to decompose aqueous solutions of NaCl to give Cl2, H2, and NaOH: 2NaCl(aq)+2H2O(l)→2NaOH(aq)+H2(g)+Cl2(g) part A: If the plant produces 1.7×106 kg (1700 metric tons) of Cl2 daily, estimate the quantities of H2 produced. Express your answer using two significant figures. part B: If the plant produces 1.7×106 kg (1700 metric tons) of Cl2 daily, estimate the quantities of NaOH produced. Express your answer using two significant figures.Cocaine (C17H21O4N; Figure 2) is a natural substance found in leaves of the coca plant, which have been used for centuries as a local anaesthetic and stimulant. Illegal cocaine arrives in the USA either as the pure compound or as the hydrochloride salt (C17H21O4NHCl). At 25oC, the salt is very soluble in water (2.50 kg/L), but pure cocaine is much less so (1.70 g/L). What is the maximum amount of the salt (in gram) that can dissolve in 50.0 mL of water? When a 25 mL aqueous solution that contains 62.50 g of the salt is treated with NaOH, the salt is converted to pure cocaine. How much water (in litres) is needed additionally to dissolve the formed pure cocaine? Round your final answer off to two decimal points.A chemical plant uses electrical energy to decompose aqueous solutions of NaClNaCl to give Cl2Cl2, H2H2, and NaOHNaOH: 2NaCl(aq)+2H2O(l)→2NaOH(aq)+H2(g)+Cl2(g)2NaCl(��)+2H2O(�)→2NaOH(��)+H2(�)+Cl2(�) Part A If the plant produces 1.9×106 kg1.9×106 kg (1900 metric tons) of Cl2Cl2 daily, estimate the quantities of H2H2 produced. Express your answer using two significant figures.
- Consider an iron bar on a balance weights 75.0g. As the iron bar rusts, which of the following is true? Explain your answer. The balance will read less than 75.0 g. The balance will read 75.0 g. The balance will read greater than 75.0 g. The balance will read greater than 75.0 g, but if the bar is removed, the rust is scraped off, and the bar replaced, the balance will read 75.0 g.Imagine 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 calculationA 0.25 M NaOH is to be standardized with KHP. How much 100% KHP (204.22 g/mol) should be weighed so that the volume of NaOH is equal to 15 mL? (Answer should be in grams)
- Suppose you are hired by the Environmental Protection Agency as an engineer to measure sulfur dioxide (SO2) emissions in a small industrial power plant. And suppose you analyze a gas sample and get the following composition: 75.66% N2, 10.24% CO2, 8.27% H2O, 5.75% O2, and 0.0825% SO2. You show these figures to the factory clerk the next day, and he insists that this analysis is erroneous and states that the fuel is natural gas, contains methane and ethane and does not contain sulfur. You ask if another fuel is used, and sometimes they say they use fuel as fuel, but at the time of analysis they say that this fuel is not used. However, your measurements show that the enterprise is using fuel at the time of measurement, and the responsible person accepts this later and accepts that they have made mistakes.a) Calculate the molar ratio of carbon / hydrogen in the fuel and use the result to prove that the fuel cannot be natural gas.b) Assuming that C, H and S are the elements present in the…Q5. As part of the aspirin synthesis lab, the orgo students also had to perform the following calculation to demonstrate their knowledge. Are you able to help them work this out?Saponification is a process in which soap is produced from the chemical reaction between animal fat (triglycerides) and a strong base such as NaOH. An example of such a balanced chemical reaction is shown here:C57H110O6 + 3NaOH à C3H5(OH)3 + 3C18H35O2NaIf, during the saponification reaction, 228.5 g of C57H110O6 is mixed with 211.7 g of NaOH and 180 g of soap is produced: a. Calculate the theoretical yield of soap (in grams), C18H35O2Na, and indicate which species is the limiting reactant. Provide your answer to 2 decimal places. b. Calculate the percent yield for this reaction. Provide your answer to 1 decimal place. Show ALL steps and equations involved in your calculations. Remember to label all steps clearly and use appropriate unitsOne of the reactions in the Solvay Process involves the reaction of calcium oxide with water toproduce slaked lime (calcium hydroxide).CaO(s) + H O2 (l) - Ca(OH)2 (s)A lab technician performs the experiment and uses 54.8 g of calcium oxide to react with a setamount of water. When the reaction is completed, the technician uses a filtration apparatus tocollect the mass of calcium hydroxide produced. The following data is recorded:Mass of filter paper: 1.24 gMass of filter paper and solid: 68.04 g What is the theoretical mass of calcium hydroxide that is predicted to be produced? What mass of precipitate was collected in this experiment? What is the percent error? Comment on the validity of the results
