A standard number 2 pencil contains 3.0x10 grams of graphite (Formula: C). How many moles of graphite are in a standard pencil? Molar mass of carbon is 12.011g/mol

Q: Narceine is a narcotic in opium that crystallizes from solution as a hydrate that contains 10.8 mass…

A: Given : Mass percentage of water = 10.8% Molar mass of nicotine = 499.52 g/mol

Q: How many moles of NO3- are in 13.0 g of Ca(NO3)2?

A: 1 moles of Ca(NO3)2 contains 2 moles of Nitrate ions. Nitrate ions (NO3-) present in the sample =…

Q: A molecular compound is found to consists 30.4% nitrogen and 69.6% oxygen. if the molecule contains…

A: Given Composition of N = 30.4 % Composition of O = 69.6 %

Q: 0.4 moles of calcium carbonate contains how many carbon atoms?     A. 1.2 x 1023   B. 4.8 x…

A: The formula of calcium carbonate = CaCO3  Molecular weight of CaCO3 is 100 gm/mol  1 mole CaCO3 =…

Q: How many hydrogen atoms are in 0.1488 g of phosphoric acid , H3PO,? 2.743 x 1021 atoms H STARTING…

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Q: A fuel tank used in a barbecue contains 9.8 gr. of total atoms of propane, C3H8(g)- a. What amount…

A: Because propane is made up only of carbon and hydrogen , the chemical formula is C3H8 . It's an…

Q: The formula of a dye is C16H10N2O2 . Write each answer with the correct number of sig figs. The…

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Q: An infant dose of acetaminophen (C8H9NO2) is 0.080 g. How many moles of acetaminophen are in each…

A: Given, Mass of acetaminophen = 0.080g.

Q: A sample of sodium carbonate, Na2CO3, weighs  21.0 g.  Calculate the following quantities.   (a)…

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Q: Sodium chloride, NaCl, forms by the following reaction between sodium and   a. How many moles of…

A: Given data:  mol of Cl2 = 3.4 Molar mass of NaCl = 58.44 g/mol

Q: Consider a sample of carbon tetrafluoride that contains 1.09 × 10²⁴ atoms of fluorine. 1.) Using…

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: How many moles of phosphorus pentachloride, PCl5, are present in a sample that contains 4.60 moles…

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Q: Fe203 + C--> _Fe+ CO How many moles of iron (III) oxide are needed to create 200 moles of Iron? O…

A: The balanced reaction is -  Fe2O3 + 3C→2Fe +3CO

Q: The following may be needed: 1 mol=6.022x1023. 1) Calculate the molecular mass and molar mass of…

A: 1.

Q: Heroin (molar mass = 359 g/mol) is also a narcotic drug and is a derivative of morphine. How many…

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Q: If you have 10.00g of MgNH4PO4 • 6H2O, how many moles of MgNH4PO4 • 6H2O are there? How many moles…

A: Given: Mass of MgNH4PO4 • 6H2O = 10 g Molar mass of MgNH4PO4 • 6H2O = 245.406 g/mol

Q: How many moles of NaCl can be produced?

A:

Q: Convert 2.5 moles of silver to atoms. O 4.02x1025 atoms O 1.51x1024 atoms O 7.51x1023 atoms O…

A: Answer: option b) 1.51 × 1024 atoms

Q: Consider a sample containing 0.750 mol0.750 mol of a substance. How many atoms are in the sample if…

A: The number 6.022 × 1023 indicates the number of atoms or molecules in a mole of any substance is…

Q: Given a sample containing 6.02 x 10^25 molecules of nitrobenzene (C_6H_5NO_2). a) How many moles of…

A: Since, 1 mole = 6.02×1023atoms/molecules/ions Molar mass represents the mass of one mole of the…

Q: If i have the chemical equation Mg(s) + 2HCl(aq) ⟶ MgCl2(aq) + H2(g), how would I find the moles of…

A: We have given that  the balanced chemical equation :                    1Mg(s) + 2HCl(aq) →…

Q: Particular thermos can hold 473.2 ML of warm beverage. If the Thermo is filled with hot cocoa, which…

A: Given that,Concentration of the sugar = 0.23 M = 0.23 mol/L Capacity of the solution in thermos =…

Q: 4. How many moles of Vitamin E ( the formula is written down) are present in 10.0 g of Vitamin E?

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Q: How many moles of glucose, C,H1206, can be "burned" biologically when 10.0 mol of oxygen is…

A: The given data : The number of moles of Oxygen = 10 To determine = The number of moles of glucose…

Q: How many moles of aspirin are in the tablet?

A: Number of moles = mass/molar mass  1 mol = 6.022 × 1023 molecules

Q: How many moles of nitrogen atoms are present in a sample that contains 4.73 moles of dinitrogen…

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

Q: A sample of CH 3 F contains 2.71 * 10 ^ 24 molecules. How many moles of CH 3 F are present?

A: Since moles of any molecule = number of molecule / Avogadro's number  Avogadro's number = 6.022 X…

Q: packet of artificial sweetener contains 40 mg of saccharin (C7H5NO3S). How many moles of carbon…

A: Given is, 40 mg=0.04g of saccharin (C7H5NO3S) And molar mass of saccharin = 183.18 g/mol

Q: (a) How many moles of CO, contain 3.26x1024 molecules? mol CO2 4.0 (b) What number of moles is…

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Q: Enter your answer in the provided box. Silicon tetrachloride (SiCl4) can be prepared by heating Si…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 1: The empirical formula of hydrocarbon that contains 18.4% H and 81.6% C by mass is? B) CH3 2: What…

A: Balanced chemical equation are those in which  number of atoms on left hand side and right hand side…

Q: Ethanol has a molecular formula of CH3CH2OH. 1.) What is the molar mass of ethanol? 2.) What is the…

A: 1) molar mass = sum of atomic mass of each atom present  in the molecule  Since in ethanol we have 2…

Q: It is 40.7%, 54.2% O and 5.1% H of the compound X, which is the main component of clove oil. (C: 12…

A: Here given the amount in percentage of C,H and O. So for rough formula means empirical formula of…

Q: How many oxygen atoms are on the right-hand side of the following chemical equation? 4FES2(s) +1102…

A: Number of Oxygen atoms means number of O atoms present.

Q: 2Al(s) + 3CuSO4(aq) --> Al2 (SO4)3 (aq) + 3Cu(s) How many moles of aluminum will be required to…

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Q: According to the balanced chemical question below, how many grams of Li 3N can be formed from 3.39…

A: Reaction involved:  6 Li(s) + N2(g) ------> 2 Li3N(s)  We are assuming that Nitrogen is present…

Q: if a box of cereal contains 990 mg of potassium, how many moles of K are present in the box?

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Q: Which contains the greatest number of hydrogen atoms? O 0.080 moles of sucrose, Ci2H22011 O 0.250…

A:

Q: Consider a sample containing 0.750 mol of a substance. How many atoms are in the sample if the…

A: The number of lead atoms in 0.750 mol of a sample is calculated as, The number of platinum atoms in…

Q: Aluminium has a denisty of 2.70 g/cm^3.  How many moles of aluminum are in a 13.2 cm^3 block of the…

A: The question is based on mole concept. we have to calculate moles of aluminium present in the given…

Q: What is the molar mass of C13H21NO3 (albuterol), a drug used to treat asthma? Reminder: molar mass…

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Q: The molecular formula of aspartame is C14H18N2O5 a. What is the molar mass of aspartame? b. How many…

A:

Q: Convert 2.5 moles of silver to atoms. O 4.02x102 atoms O 1.51x1024 atoms O 7.51x1023 atoms O…

A: Mole relation gives the relationship among number of mole, atomic/molar mass, number of…

Q: KHP grams Molar Mass of KHP (A2) 204.22 g/mol moles KHP 1.009 (A11) %3D 204.22 g/mol

A: Mass = 1.009 g Molar mass of KHP = 204.22 g/mol Moles = mass/MM    = 1.009/204.22 = 0.00494 mol

Q: A compound is found to contain 1.25g of Ge and 2.44g of Cl. What is the empirical formula of the…

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Q: 39. Calculate the number of molecules present in each of the following samples. a. 4.75 mmol of…

A: We know that for 1 mole of any chemical compound/species,there are Avogadro's number of molecules…

Q: How many moles of propylene ( C3H6) are in 25.0g of substance?how many moles of Ag are in 78.8 grams…

A:

Q: Aluminum, silicon, and oxygen form minerals known as aluminosilicates. How many moles of aluminum…

A: Given,Moles of pyrophyllite, Al2Si4O10(OH)2 = 4.05 molIn 1 mole of pyrophyllite, Al2Si4O10(OH)2…

Q: How many grams of sugar C12H22011 that consists of 1.25 x 1024 atoms of carbons? Molar mass of…

A: Number of atom of carbon = 1.25 × 1024 atoms Number of atoms of carbon = number of moles × Avogadro…

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.