Macmillan Learning A sample of ethanol, C₂H6O, has a mass of 51.25 g. Calculate the number of ethanol molecules in the sample. number of molecules: molecules

Q: The common pain relievers – aspirin (C9H8O4), acetaminophen (C8H9NO2), and naproxen sodium…

A: To solve this question, first, we need to find out the molar masses of the given chemical compounds.…

Q: This is the chemical formula for carvone: C10H14O An organic chemist has determined by measurements…

A:

Q: The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8 mL…

A: Given; density of water at 4.00Co=0.967 g/mL present volume of water we have=499.8 mL moles of water…

Q: Carbon tetrachloride, CCI4, was widely used as a refrigerant and in fire extinguishers until it was…

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Q: The formula for carbon monoxide is CO. a. How many molecules are in 3.35 grams of carbon monoxide?…

A: Given:The formula of carbon monoxide is COMass of CO = 3.35 gWe have to determine:(a) The number of…

Q: A chemist measures the amount of bromine liquid produced during an experiment. She finds that 658. g…

A: Given: Mass of bromine liquid produced - 658 g   To find: number of moles of bromine produced = ?…

Q: A chemist measures the amount of bromine liquid produced during an experiment. He finds that 92.4 g…

A: The amount of bromine liquid produced in the experiment = 92.4 g The molar mass of  Br2 = 159.808…

Q: How many grams of Al are needed to form 7.3 grams of Al2O3

A: Given: Mass of Al2O3 = 7.3 g Standard data: The molar mass of Al2O3 = 101.96 g/mol The molar mass…

Q: The chemical formula for lithium hydride is LiH. A chemist measured the amount of lithium hydride…

A: Detail mathematical calculation is shown below

Q: The chemical formula for potassium iodide is KI. A chemist measured the amount of potassium iodide…

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Q: 5. A bottle of Ibuprofen (C,,H,,O,) contains 1.204 x 1024 molecules. How many grams of ibuprofen are…

A: The molecular weight is 206.29 g/mol means 1 mol of ibuprofen = 206.29 g of ibuprofen

Q: ite the term used for a certain number of things. (If u don't know, look it up!) An example is shown…

A: 1) 1 dozen mice 2) 1.083 dozen 3) 1.67 dozen Kangaroo  4) 5.02×10^22 dozen water molecules.  5) 272…

Q: 1. Ascorbic Acid (Vitamin C) contains 40.92 % C, 4.58 % H and 54.50 % O by mass. Its molecular mass…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: The chemical formula for hydrogen bromide is HBr. A chemist measured the amount of hydrogen bromide…

A: Here mass of hydrogen bromide (HBr) is given. We have to convert mass to number of moles. Mass and…

Q: An ice freezer behind a restaurant has a freon leak, releasing 34.50 g of C₂H₂F3Cl into the air…

A: 34.50 g of C2H2F3Cl are releasing into the air every week due to the freon leak in an ice freezer…

Q: A sample of ammonia (NH3) has the mass of 56.6 g.  How many molecules are in this sample? Group of…

A: The formula for ammonia is NH3. Now we can calculate the mass of 1 mole of NH3. N = 14.01 H = 1.008…

Q: A sample of methane, CH4, has a mass of 58.25 g. Calculate the number of methane molecules in the…

A: Given mass of CH4 = 58.25 g Molar mass of CH4 = 16.04 g

Q: Tia has a sample of pure gold (Au). She weighed the sample and the result was 10.810.8 grams. Tia…

A: Number of atoms = number of moles x 6.0224 x 1023 Number of moles = Mass/molar mass

Q: One millimeter of water contains about 20 drops. One gram of water contains 3.34x10^22 molecules of…

A: One millilitre of water contains about 20 drops. One gram of water contains 3.34×1022 molecules of…

Q: If you have 152 g of glucose (C₆H₁₂O₆), how many moles are present? Use the correct number of…

A: Given: Mass of glucose (C₆H₁₂O₆) = 152 g Molar mass of glucose = 180.156 g/mol

Q: How many MOLECULES of carbon dioxide are present in 6.99 grams of this compound ?  molecules. and…

A: 1) Given: Mass of CO2 = 6.99 g.

Q: The molecular formula for potassium hydrogen phthalate (abbreviated KHP) is C3H5O4K. What is the…

A: Given :- KHP  Formula = C8H5O4K  To calculate :- It's molar mass

Q: A mothball, composed of naphthalene (C10 H8 ), has a mass of 1.50 g. Part A How many naphthalene…

A: 1 mole of any atom or molecule contains Avogadro's number of atoms or molecules. Avogadro's number =…

Q: Natural gas is odorless; to alert people to gas leaks, the gas company inserts an additive that has…

A: The speed of the gas molecule is inversely proportional to the mass of the gas molecule. The…

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3Si2O52OH2 An…

A: Given data: Number of moles of silicon = 13  Chemical formula of talc = Mg3(Si2O5)2(OH)2

Q: A chemist measures the amount of fluorine gas produced during an experiment. He finds that 3.1 g of…

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Q: Excesdrin headache pain relief extra strength contains 250mg of acetaminophen, C8H9NO2 per tablet.…

A: Here we are required to find the number of molecule of acetaminophen present in the tablet

Q: An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

Q: All the fertilizers listed below contribute nitrogen to the soil. If all these fertilizers are sold…

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Q: An oxygen atom has a mass of 2.6610−23g and a glass of water has a mass of 0.050kg. Use this…

A: The number of units in one mole of any substance is equal to Avogadro’s constant. Given: Mass of…

Q: 9. Calculate the number of molecules present in 4.29 g of nitrogen dioxide (NO2). Danie192.1 10.…

A: 9. Given data: The mass of nitrogen dioxide is 4.29 g. To find the number of molecules present in…

Q: The formula for boron trichloride is BCl3. A. How many molecules are in 9.31 grams of boron…

A: Molecular formula of Boron trichloride is BCl3. It has three Chlorine atom and one boron atom. Molar…

Q: An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown…

A:

Q: Pheromones are a special type of compound secreted by the females of many insect species to…

A: Molecular formula of pheromone: C19H38Omass of pheromone (C19H38O) = 1.4 × 10-12 gNumber of…

Q: A sample of methane, CH4, has a mass of 38.75g. Calculate the number of methane molecules in the…

A: Mole concept:  The number of molecules in one mole of the substance is equal to the Avogadro number…

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.