A mixture of CuSO4 · 5H2O and MgSO4 · 7H2O is heated until all the water is lost. If 5.047 g of the mixture gives 2.967 g of the anhydrous salts, what is the percent by mass of CuSO4 · 5H2O in the mixture?

Q: When you react 3.9267 grams of Na2CO3 · nH2O with excess HCl(aq), 0.6039 grams of a gas is given…

A: Here we are required to find the number of water molecule attached to Sodium carbonate

Q: How many moles of Al are necessary to form 70.0 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Mass of AlBr3 = 70.0 g  Molar mass of AlBr3 = 266.69 g/mol Moles of Al to form 70.0 g of AlBr3 = ?…

Q: If 6.1 × 10²⁵ molecules of CO₂ are produced in a combustion reaction, what is the mass in kg of CO₂…

A: Given: 6.1 × 10²⁵ molecules of CO₂ are produced in a combustion reaction.  To determine : The mass…

Q: What is the theoretical yield of MgO from the combustion of 5.25 x 10^23 atoms of Mg and 4.69 x…

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Q: The equation for the reaction between sodium hydrogen carbonate and sulfuric acid at room…

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Q: According to the following balanced reaction, how many moles of NO can be formed from 3.00 moles of…

A: Limiting reactant :- A reactant whose number of moles are less than the number of moles required as…

Q: Iron(III) oxide reacts with carbon monoxide according to the equation: Fe,0;(6) + 3 CO(g) – 2 Fe(s)…

A: The given reaction is, Fe2O3(s) + 3CO(g)  → 2Fe(s) + 3CO2(g)  Given that: mass of Fe2O3 = 22.55 g…

Q: Consider the Haber-Bosch process for the synthesis of ammonia from its elements. Calculate the…

A: The balanced reaction taking place is given as, => N₂(g) + 3 H₂(g) → 2 NH₃(g) Given : Mass of N2…

Q: Cr2O72– (aq), reacts with zinc metal to produce Cr3+ (aq) and Zn2+ (aq) ions. When the reaction is…

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Q: How many moles of lithium hydroxide would be required to produce 86.5 g of Li,CO3 in the following…

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Q: A student weighs an empty beaker at 85.301 g. A sample of Na2SO4·??H2O is added to the beaker, and…

A: Mass of empty beaker = 85.301 g  Mass of beaker + hydrated salt = 86.607 g  Mass of beaker +…

Q: How many moles of Al are necessary to form 29.2 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

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Q: The amount of product that can be produced depends only on the amount of the limiting reactant…

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Q: In a combustion reaction between 700.0 mL propane, C3H8 with oxygen gas, O2 at 25 °C, an unknown…

A: The chemical equations should be balanced in accordance with the law of conservation of mass.…

Q: How many hydrogen atoms are in a 1.0 g sample of acetic acid, CH3COOH?  The molar mass of acetic…

A: The number of moles (n) of a substance is obtained as the ratio of the mass (m) of the substance to…

Q: What is the mass in grams of Cuo that would be required to produce 21.50 moles of nitrogen gas in…

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Q: mass

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Q: How many moles of Al are necessary to form 67.8 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Molar mass of Al=26.98 g/mol Molar mass of Br2 =159.808  g/mol The molar mass of AlBr3 =266.69 g/mol…

Q: What mass of phosphoric acid can we produce by the following reaction           P4(s) + 5 O2(g) + 6…

A: The reaction taking place is  P4(s) + 5 O2(g) + 6 H2O(l) → 4 H3PO4(s) Given : mass of P4 = 334.2 g…

Q: 892.1 grams of isomaltitol, C12H24O11, was combusted in a furnace completely in an excess oxygen.…

A: The yield of water can be calculated as:-

Q: The goal of the first part of the experiment is to determine the value of n in the formula for…

A: Answer:This question is based on stoichiometric calculation where we have to establish the relation…

Q: moles o

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Q: The percent yield of this reaction is 65.0%. 2A1(s) +3 F2 (g) – 2AIF3 (s) Determine the mass, in…

A: We have to predict the actual yield.

Q: What is the molar mass in g/mol of Al2(COO)3?

A: The formula of aluminum carbonate can be written as - Al2(CO3)3

Q: A sample containing only carbon,hydrogen,phosphorus and oxygen is subjected to elemental analysis.…

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Q: Balance the following chemical equation CB,H.(g) + O₂(g) - > CO₂(g) + H₂O(g)

A: Is an equation in which the number of atoms for each element in the reaction and the total charged…

Q: What is the mass in grams of CuO that would be required to produce 40.50 moles of nitrogen gas in…

A: Ammonia reacts with CuO to form copper, nitrogen, and water. The equation for the balanced chemical…

Q: How many moles of Al are necessary to form 50.2 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Given  Reaction    2Al(s)  + 3 Br2(l)  →  2 AlBr3 Mass of AlBr3  = 50.2 gram  Number of mole of Al…

Q: What is the maximum mass of oxygen, in grams, that can be obtained from 26.25 g of KO2? 4 KO2(s) +…

A: Molar mass of KO2 = 71.1g/mol

Q: You are given the balanced chemical reaction: C4H8(g) + 6 O2(g) 4 CO2(g) + 4H₂O(g). If 0.3218 moles…

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Q: How many moles of Al are necessary to form 28.6 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Given , mass of AlBr₃  = 28.6 g Thus, moles of AlBr₃  = mass of AlBr₃ molar mass of AlBr₃  = 28.6…

Q: A 3.859 g sample containing impure CuCl2· 2 H20 was heated to constant mass. The sample mass after…

A: The impure sample of CuCl2.2H2O heating to drive off all the water then the mass of the mixture is…

Q: Calculate the mass percent of 0.389 g of silicon (Si) that reacts with oxygen to form 0.832 g…

A: Given that:  Si = 0.389g and SiO2 = 0.832 g…

Q: What is the mass (in grams) of 5.03*10^22 molecules of CO2 molecules?

A: 1 mole = 6.0226 x 1023 Molar mass of CO2 = 44.01 g/mol Given that: Number of molecules of CO2 = 5.03…

Q: How many moles of nitrogen gas would be produced if 3.23 moles of copper(II) oxide were reacted with…

A: Given CuO = 3.23 mol  Ammonia = excess reagent  N2 gas =?

Q: According to the following reaction, how many grams of chlorine gas are necessary to form 0.672…

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Q: student weighs out exactly 175 mg CaCl2.2H2O and 95 mg KOH, and reacts these together to completion…

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Q: What is the mass in milligrams of 7.22×10^20 molecules of CO2?

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Q: A chemical reaction calls for 0.125 moles of sodium acetate, NaC2H3O2. What mass, in grams, of…

A: The relationship between number of moles (n) and mass of a substance is given by: n=MassMolar…

Q: How many moles of Al are necessary to form 48.8 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

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Q: The Ostwald process is used commercially to produce nitric acid, which is, in turn, used in many…

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Q: Use the concept of molarity to calculate the molarity of a solution prepared by dissolving 25.00 g…

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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.