During excessive physical activity, lactic acid (m 5 90.08 g/mol) forms in muscle tissue and is responsible for muscle soreness. Elemental analysis shows that this compound has 40.0 mass % C, 6.71 mass % H, and 53.3 mass % O. (a) Determine the empirical formula of lactic acid. (b) Determine the molecular formula.

Q: 2- Calculate the empirical fomula of the compound composed of 38.67 % C, 16.22 % H, and 45.11 %N by…

A: To calculate the empirical formula we have to calculate the number of mole of each elements in the…

Q: a. What mass is represented by 0.0146 mol of C3H7OH (2-propanol, rubbing alcohol)? Mass %3D b. What…

A: a). Given: The moles of C3H7OH = 0.0146 mol. The molar mass of C3H7OH = 60.09 g/mol.

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: Combustion of a 1.505 g sample of thiophene, a carbon–hydrogen–sulfur compound,yields 3.149 g 0.645…

A: Thiophene is composed of carbon, hydrogen, and sulfur. On combustion, it will give carbon dioxide,…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A:

Q: If 6.3 x 1025 molecules of CO2 are produced in a combustion reaction, what is the mass in kg of CO,…

A:

Q: Determine the empirical formula of (a) the rodenticide (rat killer) warfarin, which consists of…

A: The given data contains, C = 74.01% H=5.23% O=20.76%

Q: [References] A sample of limestone and other soil materials was heated, and the limestone decomposed…

A: Calcium carbonate decomposes into calcium oxide and carbon dioxide. The equation for the balanced…

Q: Table salt, NaCl(s), and sugar, C1,H„O(s), are accidentally mixed. A 5.50 g sample is burned, and…

A: Balanced chemical equation for combustion of sucrose: C12H22O11 + 12O2 ------> 12CO2 + 11 H2O…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: The reaction of the combustion of morphine is: 4C17H19NO3+85O2→68CO2+38H2O+4NO2 Calculation of no.…

Q: For the following reaction, 2.84 grams of methane (CH4) are allowed to react with 30.5 grams of…

A:

Q: perchlorate is a colorless , crystalline substance whose composition is 28.2 % K, 25.6 % Cl, and…

A: Given, Element %  of  K = 28.2 % = 28.2 g Element %  of  Cl = 25.6 % = 25.6 g Element %  of  O =…

Q: Question attached

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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…

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Q: Consider the reaction 3X + 2Y → 5C + 4D How many moles of C can be synthesized from 37.0 moles of Y…

A:

Q: the mineral gibbsite has the formula al(oh)3. what mass in,in kg, of al is present in 2.9 kg of…

A: Given, mass of gibbsite,  Al(OH)3  = 2.9 kg = 2900 g Thus, moles of gibbsite can be calculated as,…

Q: When 6.313 g of one of the hydrates of sodium sulfate (Na2SO4) was heated to drive off its water of…

A: Mass of hydrate sodium sulphate = 6.313 g  Mass of anhydrous sodium sulfate = 5.036 g

Q: In air, nitric oxide gas reacts with oxygen to produce nitrogen dioxide, which appears brown in…

A: Nitric oxide reacts with oxygen to produce nitrogen dioxide. The equation for the balanced chemical…

Q: Provide answer to the following

A: Density of a particular substance is the compactness of atoms present in it. Density can be…

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: Direct reaction of iodine (I2) and chlorine (Cl2) produces an iodine chloride, IxCly, a bright…

A: Empirical formula represents the smallest whole number ratio.

Q: 4.2 A compound that can be sampled or "smelled by sniffing your armpits or someone's unwashed feet,…

A: The percent of carbon, Hydrogen, Oxygen is 55.80 %, 7.03 %, 37.17 % respectively

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 sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: Heating limestone and other soil samples revealed calcium oxide and carbon dioxide. The balanced…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Mass % of morphine = Mass of morphine x 100/Mass of mixture

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: The mass of the sample of limestone is = 2.631 g The mass of carbon dioxide gas produced by the…

Q: 4.84. Aluminum chloride (AICI3) is used as a catalyst in the production of polyisobutylene, which is…

A: Given, Mass of Aluminium (Al) metal reacts = 2.70 g Mass of chlorine (Cl2) gas reacts = 7.10 g…

Q: 5.) The composition of a compound containing Cd, P, and O, is 63.94% Cd and 11.80% P (by mass). What…

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Q: The molecular formula of acetylsalicylic acid (aspirin), one of the most commonly used pain…

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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 sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: We know that Molar mass of CO2=44g/mol Mass of CO2=2.14g Moles of CO2=MassMolar mass…

Q: 5.) The composition of a compound containing Cd, P, and O, is 63.94% Cd and 11.80% P (by mass) What…

A: Given: Mass % of Cd = 63.94 % Mass % of P = 11.80%

Q: (a) One molecule of the antibiotic penicillin G has a massof 5.342 x 10-21 g. What is the molar mass…

A:

Q: Iodine is prepared both in the laboratory and commercially by adding Cl, (g) to an aqueous solution…

A: From the given reaction,

Q: In the recipe for mayonnaise, the phospholipids in the egg yolk act as emulsifiers. If you assume…

A: Given that : Weight of one egg yolk = 10 g 33% of egg yolk is fat, so, 33% of 10 g = 3.3 grams

Q: Phosphoric acid (H,PO,, MM = 98.00 g/mol) can be prepared by treating calcium phosphate (Ca (PO,),…

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Q: 1.Ibuprofen is a compound used in painkillers. When a 2.174 g sample is burned in an excess of…

A:

Q: 1. What is the mass percentage composition of capsaicin? 2. What is the percentage composition of…

A: (1) Capsaicin has Following molecular formula -  C18H27NO3  And it's Molecular mass is -  =>…

Q: Table salt, NaCl(s), and sugar, C,,H„0(s), are accidentally mixed. A 5.50 g sample is burned, and…

A: Balanced Combustion reaction of sugar:  C12H22O11 + 12O2 .....> 12CO2 + 11H2O Mass of sample =…

Q: A 0.45g sample of aspirin is decomposed into its constituent elements and found to contain 0.27g C,…

A: Given: Mass of aspirin sample = 0.45 g. Mass of C produced = 0.27 g. Mass of H produced = 0.020 g…

Q: The approximate minimum daily dietary requirement of the amino acid leucine, C6H13NO2, is 1.1 g.…

A: Molar mass of the amino acid leucine ( C6H13NO2 ) = 12 x 6 + 1 x 13 + 14 x 1 + 16 x 2 = 72 + 13 + 14…

Q: The thermite reaction occurs when iron(III) oxide reacts with solid aluminum. The reaction is so hot…

A:

Q: DDT, an insecticide harmful to fish, birds, and humans, is produced by the following reaction: 2C6H;…

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

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

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

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Given: mass of mixture = 2.00 g mass of CO₂ = 3.97 g molar mass of CO₂ = 44.01 molar mass of…

Q: Question attached

A: The limiting reagent (or limiting reactant or limiting agent) in a chemical reaction is a reactant…

Q: How many moles of sucrose (table sugar, C 12H 22O 11, molar mass 342.3 g/mol) are contained in a…

A: Number of moles of sucrose is equal to the mass of sucrose divided by its molar mass. Write the…

Q: Ammonium phosphate ((NH,), PO, is an important ingredlent in many fertilizers. It can be made by…

A:

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: The decomposition reaction of CaCO3 can be written as, => CaCO3 (s) ---------> CaO (s) + CO2…

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.