A bottle of the pain reliever ibuprofen (C 13H 18O 2, molar mass 206.3 g/mol) contains 500 200.-mg tablets. (a) How many moles of ibuprofen does the bottle contain? (b) How many molecules of ibuprofen does the bottle contain?

Q: (a) How many moles of ammonium ions are in 0.549 g of ammonium carbonate? mol (b) What is the mass,…

A: Formulae used :  Moles = given mass ÷ molar mass  A) Given Mass of ammonium carbonate = 0.549 g…

Q: Consider the balanced chemical equation below:  NaOH (aq) + HCl (aq) → H2O (l) + NaCl (aq) If 12.3…

A: Sodium hydroxide reacts with hydrochloric acid to form water and sodium chloride. The equation for…

Q: (a) cyclobutane,     Molar Mass = (b) cobalt(III) chromate, Co2(CrO4)3   Molar Mass =

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Q: Arsenic reacts with oxygen according to the following equation:   4 As (s) + 3 O2 (g) → 2 As2O3 (s)…

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Q: Ethyl alcohol (C₂H5OH), also called grain alcohol, can be made by the fermentation of glucose:…

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Q: Nitrous oxide (N,0), also known as “laughing gas," is commonly used as an anesthetic in dentistry.…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: In a lab experiment, 8.21 g of phosphorus reacts with bromine to form 71.75 g of phosphorus…

A: According to the law of conservation of mass, the sum of mass of reactants and the sum of mass of…

Q: Urea [(NH₂)₂CO] is prepared by reacting ammonia with carbon dioxide: In the reaction 849.2 g of NH3…

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Q: When ammonia (NH3) is reacted with an excess of oxygen gas, it produces nitrogen monoxide gas and…

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Q: Calculate the weight in grams of the following : (i) 0·025 moles of copper carbonate. (ii) 1·25…

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Q: 1.) Sixty grams of FeCl3 reacts with 50.0 grams of H2S. 2 FeCl3 (s) + 3 H2S (g) ---> 6 HCI + Fe2S3…

A: The given  2 FeCI3 (s) + 3 H2S (g) ---> 6 HCI + Fe2S3 (s) Molar Masses:  FeCI3 = 162.20 g/mol H2S…

Q: Calculate each of the following quantities:(a) Mass in grams of 6.44x10^-2mol of MnSO₄(b) Moles of…

A: Number of moles of MnSO4 = 0.0644 mol Mass of MnSO4 is determined by multiplying the number of moles…

Q: Calculate the number of molecules present in each of the following samples.(a) 0.800 mol acetylene,…

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Q: Uranium is used as a fuel, primarily in the form of uranium(IV) oxide, in nuclear power plants. A…

A: To solve this problem first we have to calculate the mass of oxygen combined , then we will…

Q: (a) How many moles of ammonium ions are in 0.642 g of ammonium carbonate? 8.04e21 X mol (b) What is…

A: We have to calculate the required quantities.

Q: Aluminum carbide is a solid that reacts with water to form aluminum hydroxide and methane gas. The…

A: Aluminum carbide is a solid that reacts with water to form aluminum hydroxide and methane gas. The…

Q: Ferrocene has the formula Fe(C5H5)2 (a)Chemical amount of ferrocene in 100g of ferrocene (b)Number…

A: This can be solved by using the Molarity and Avogadro's number concept.

Q: Be sure to answer all parts. Propane (C3Hg) is a minor component of natural gas and is used in…

A: Part a)  given reaction :-   C3H8(g) + O2(g)  --->  CO2(g) + H2O(g)    Part b)   given moles of…

Q: When ammonia (NH3) is reacted with an excess of oxygen gas, it produces nitrogen monoxide gas and…

A: When ammonia (NH3) is reacted with an excess of oxygen gas, it produces nitrogen monoxide gas and…

Q: 2) Methanol (CH3OH) is a single-carbon alcohol that is commonly known as wood alcohol, because it…

A: A mole of an element or compound has Avogadro number of atoms or molecules in it. Each element or…

Q: Imagine that you perform a combination reaction between 60.0 g of sodium metal (Na) with 10.0 g of…

A: chemical equation :-  2Na (s) + 3N2 (g) ---> 2NaN3 (s)  60.0 g of Na and  10.0 g of N2  moles N2…

Q: 2H2(g) + O2 (g) —> 2H2O (I) What mass in grams of Water (H2O) is produced from 2 moles of Hydrogen…

A: 2 moles of hydrogen forms 2 moles of water

Q: When ammonia (NH3) is reacted with an excess of oxygen gas, it produces nitrogen monoxide gas and…

A: The balance chemical equations contain equal number of the atoms of the various elements of the…

Q: 6. A mixture weighing 6.200 grams is 28.0% silicon dioxide or sand, SiO2, 36.0% sodium chloride, or…

A: Since the mixture is having silicon dioxide, sodium chloride and baking soda only  Hence the sum of…

Q: (a) How many moles of ammonium ions are in 0.459 g of ammonium carbonate?  _______mol(b) What is the…

A: The chemical formula of a compound represents 1mole of molecules present in it. Molar mass of a…

Q: (b) A compound is composed of elements C, H, and N. A 8.400-mg sample of the unknown compound was…

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Q: 35g of LiCl mixes with 25g of Ca(OH)2, (a) which is the limiting reactant? (b) what is the…

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Q: Please answer these questions on your Page 6 (a) The percent composition of an unknown substance is…

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Q: (a) How many moles of ammonium ions are in 0.393 g of ammonium carbonate? mol (b) What is the mass,…

A: Formulae used : Moles = given mass ÷ molar mass A)Given :Mass of ammonium carbonate= 0.393 g Molar…

Q: Calculate each of the following quantities:(a) Total number of ions in 38.1 g of SrF₂(b) Mass in…

A: The number of moles is equal to the ratio of mass to the molar mass of the substance. The total…

Q: Be sure to answer all parts. The balanced equation for the reaction of aluminum metal and chlorine…

A: The question is based on the concept of reaction stoichiometry.   we need to calculate quantity of…

Q: Calculate the following: (a) mass in 1.73 mol of CaH 2 (b) moles of mg (NO3) 2 in 3.25 g of…

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Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

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Q: (a) What is the mass, in grams, of 4.62  1023 molecules of aspirin, C9H8O4?

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Q: What is the molecular formula of each compound? (a) Empirical formula CH₂ (μ=42.08 g/mol) (b)…

A: a) Empirical formula = CH2 The Molecular formula can be calculated by the following formula,…

Q: (c) An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by…

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Q: A chemist invents a new combustion analysis instrument that uses less O2(g) which saves money on…

A: a) Calculating moles of CO 4.627 g of CO  x 1 mole CO28.0104 g CO = 0.1652 mole CO Calculating…

Q: (C12H,Cl402, molar mass 322.0 g/mol), is a potent poison. The average lethal dose in humans is…

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Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A: Given that :-  saturated carboxylic acids has the general formula CnH2n+1COOH  Atomic weights:- 1) C…

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.