A sample of nickel ore, which has nickel as the only metal present, is treated with an excessnof sulfuric acid (H2SO4) to form nickel(II) sulfate and molecular hydrogen. (a) Write a balanced equation forthe reaction. (b) If 0.0764 g of H2 is obtained from 3.86 g of the nickel ore, calculate the percent nickel, by mass, of the nickel ore.

Q: (a) If an automobile travels 225 mi with a gas mileage of 20.5mi/gal, how many kilograms of CO2 are…

A: The combustion equation for octane can be written as: Distance = 225 mi Mileage = 20.5 mi / gallon…

Q: A leak in the air conditioning system of an older car releases55 g of CF2Cl2 per month. How much Cl…

A: The given data contains, mass of CF2Cl2 = 55 g.

Q: (3b-301-4.12) Carborundum is silicon carbide, SiC, a very hard material used as an abrasive on…

A:

Q: 2.Iron ore is impure Fe2O3. When Fe2O3 is heated with an excess of carbon (coke), metallic iron and…

A: Weight of sample = 938kg = 938000g Pure iron in sample = 523kg Assuming that impurities donot…

Q: Four grams of a mixture of calcium carbonate and sand is treated with an excess of hydrochloric…

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A: In Balanced chemical equation number of atoms of each species are equal on both reactant and…

Q: how many moles of Fe3O4 are required to supply enough iron to prepare .260 mol Fe2O3?

A: 1 mole of Fe2O3 contains 2 moles of Fe. Hence, 0.260 moles of Fe2O3 will contain 0.260 * 2 = 0.520…

Q: Given the reaction, how many moles of ZZ will be produced from 1.60 mol A, 1.60 mol A, assuming…

A: For the given reaction :

Q: Write the balanced equation, then outline the steps necessary to determine the information requested…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: If 1.00mol/l of nax contains 4.2% solute by mass, what is the atomic mass of x?

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Q: I Water, ammonia and sulphur dioxide react together to form a compound A which has the following…

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Q: Consider the reaction 3X + 2Y→ 5C + 4D How many moles of C can be synthesized from 32.0 moles of Y…

A:

Q: How many grams of sulfur (S) are needed to react completely with 45.0 g of aluminum (Al) in the…

A: Aluminum reacts with sulfur to form aluminum sulfide. The equation for the balanced chemical…

Q: What is the molar mass, in g/mol, of the hydrate compound with the proposed formula of CrCl3⋅3H2O

A: Since you have posted multiple questions, and these are not related to each other therefore as per…

Q: a. What isthe percent by mass of water in iron (II) sulfate heptahydrate, FeSO4 • 7H2O  (or what…

A:

Q: What is the mass percentage of C in morphine, C1,H19NO,?

A: The molar mass of morphine is 285.34 g⋅mol−1.

Q: If 34.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?

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Q: millan Lea Table salt, NaCI(s), and sugar, C,H„0,(s), are accidentally mixed. A 5.00 g sample is…

A: Sample taken = 5.00 g  CO2 produced = 1.60 g

Q: 4.00g of a metal carbonate MCO, gives 1.91 g of MO on heating to constant mass. Identify metal M in…

A: In this question weight of metal carbonate and metal oxide is given and asked identification of…

Q: The low-grade iron ore taconite, which contains Fe3O4, is concentrated and made into pellets for…

A: Given: Mass of taconite pellet = 1 ton Mass of iron = 545 lb To Calculate: percentage of the pellets…

Q: Four grams of a mixture of calcium carbonate and sand is treated with an excess of hydrochloric…

A: Number of moles of carbon dioxide can be determined as shown below: No. of moles of CO2 = massmolar…

Q: What mass in grams of Cu(IO3)2 can be produced from 0.750 g of CuSO4 x 5H2O?

A:

Q: |Solid silver oxide, Ag2O(s), decomposes at tempera- | tures in excess of 300 °C, yielding metallic…

A: The balanced decomposition reaction of silver oxide (Ag2O) at temperature in excess of 3000C can be…

Q: A florist prepares a solution of nitrogen-phosphorus fertil-izer by dissolving 5.66 g of NH₄NO₃ and…

A: Given: Mass of NH4NO3 = 5.66 g Mass of (NH4)3PO4 = 4.42 g And volume of final solution = 20.0 L

Q: Nitrogen and hydrogen combine at a high temperature, in the presence of a catalyst, to produce…

A:

Q: What mass of hydrogen peroxide (H2O2) must decompose to produce 65.88 g of H2O?

A: Given data: The mass of H2O = 65.88 g. To find: The mass of hydrogen peroxide (H2O2).

Q: If 7.08 g of mercury (Hg) and 0.57 of oxygen are obtained when 7.65 g of HgO decomposes , what is…

A: We have to calculate the percentage composition of the compound.

Q: Nitrogen (N), phosphorus (P), and potassium (K) are themain nutrients in plant fertilizers. By…

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Q: What mass of N2H4, in grams, is needed to react completely with 27.9 g of H2O2?

A:

Q: Calculate the following quantities:  a. mass, in grams, of 0.105 mol sucrose (C₁₂H₂₂O₁₁) b. moles of…

A: a. mass, in grams, of 0.105 mol sucrose (C₁₂H₂₂O₁₁) Given;

Q: (3b-301-4.12) Carborundum is silicon carbide, SiC, a very hard material used as an abrasive on…

A: Given information, SiO2 + 3C  -->  SiC + 2CO 4.12 moles of SiO2

Q: When 1.5173 g of an organic iron compound containingFe, C, H, and O was burned in O₂, 2.838 g of CO₂…

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Q: a. A piece of iron metal with a mass of 42.5g is burned in the presence of oxygen. The resulting…

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Q: Silver sulfadiazine burn-treating cream creates a barrier against bacterial invasion and releases…

A: As per the give reaction 1 mol Ag2O reacts with 2 mol of C10H10N4SO2 to give 2 mol of AgC10H9N4SO2…

Q: A 500 megawatt electrical power plant typically burned 1,430,000 tonne of coal in a year. (a)…

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Q: The principal component of mothballs is naphthalene, a compound with a molecular mass of about 130…

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Q: A Group 2 metal with an electron configuration of [Ne]3s2 combines with fluorine (F2) to produce a…

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Q: 2. How many molecules of Carbon dioxide are there in 345g of CO2?

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: Riccardo states that for the process of iron reacting with sulfur to produce iron(Il) sulfide…

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Q: asolim and water (H,O). What mass of water is produced by the reaction of 7.74 g of octane?

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Q: If 0.35g of Al reacts with excess diatomic oxygen, how many grams of the product Al2O2 are formed

A: Given, Mass of Al = 0.35 g   Moles of Al can be calculated as :

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Q: The chemical formula of tyrosine (a building block of proteins) is C9H11NO3. Given that the formula…

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Q: How many grams of Cr are produced ( assuming 100% yield) when 68.1g of AL reacts with 364 g of…

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Q: what is the theoritical yield of dinitrogen pentoxide in grams if 13.2g of nitrogen reacts with…

A: Amount of nitrogen = 13.2 g  Theoretical yield of dinitrogen pentoxide (N2O5) = ?

Q: Phosgene, a substance used in poisonous gas warfare during World War I, is so named because it was…

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Q: Mesitylene, a hydrocarbon found in crude oil, has an empirical formula of C3H4 and an experimentally…

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Q: how many grams of sulfur (S) are needed to react completely with 45 g of Al in the synthesis Al2S3?

A:

Q: what is the mass percentage composition of the elements in the following compounds? Round to the…

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Q: One of the hydrates of MgI2 is magnesium iodide octahydrate .A 89.9 gram sample of MgI2  8 H2O was…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.