A molecular compound is found to consist of 26.0% nitrogen and 74.0% oxygen. If the molecule contains 2 atoms of nitrogen, what is the molar mass of the molecule? O 92 g-mol-1 O 54 g-mol-1 46 g-mol-1 O 108 g-mol-1

Q: The molar mass of NBr3 is (2.22 x 10² mol Br₂)(- mol NBr3 g mol NBr3 -) = mol Br₂ g NBr3 mol NBr3 g…

A:

Q: 13. How many oxygen atoms are in 225 g of O2? a. 4.23 x 1024 b. 6.84 x 1024 c. 8.47 x 1024 d. 1.69 x…

A: Number of Atoms of Oxygen can be calculated as -

Q: What is the molecular formula of an unknown compound which is composed of 57.14% carbon, 27.18 %…

A: Molecular formula = (Empirical formula)n where n = No of empirical formula components that combine…

Q: Samples of several compounds are decomposed, and the masses of their constituent elements are…

A: The empirical formula of each compound has to be given. (a) Given data contains, Mass of Ba=2.677 g…

Q: If the molar mass of butanoic acid is 88.1 g/mol,what is its molecular formula?A. C 3 H 4 O 3B. C 2…

A: Molar mass of a compound is the sum of mass of the each element present in it. For example: C6H6 The…

Q: Complete the table. Element Moles Mass Cr 0.00442 Fe 73.5 mg Ti 1.009 x 10-3 Hg 1.78 kg

A: Mole is represented by the symbol mol. It is unit of measurement of substance. Mass is defined as…

Q: A compound is 43.7 % P, and 56.3 % O by mass, and has a molar mass of 283.88 g/mol. What is the…

A: Element % composition Atomic Mass Relative no of atom=% compositionatomic mass Simplest atomic ratio…

Q: A compound has a molar mass of 95 g/mol. The compound is KF 02 MgCl2 O SF2

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Q: What is the molecular formula of a compound if its molar mass is 183.2 g/mol and its empirical…

A: Consider the given information is as follows; Molar mass of compound = 183.2 g/mol…

Q: A mole of a compound composed of nitrogen and oxygen (N xO y) has a molecular weight of 92.0 g/mol.…

A: Given,  Empirical formula = NxOy  Molecular weight of NxOy = 92 g/mol

Q: Shown below is the % composition of a compound made entirely of C, H, N, and O. This compound has a…

A: Consider the given % Composition of the elements is as follows; C = 40.32%H = 7.83%O = 35.80%N =…

Q: The molecular formula of Aspirin is C9H;O4. How many Aspirin molecules are there in a table that…

A: Given that:  Mass of aspirin = 200mg = 200mg×1g/1000mg = 0.2g Molar mass of C9H8O4 =…

Q: What is the mass of a 6.761-mol sample of sodium hydroxide? O 40.00 g O 270.4 g O 162.3 g O 5.916 g…

A: In this question we have to use mole concept. According to which  one mole is equals to: 1 mol of…

Q: Ethylenediaminetetraacetic acid (EDTA) is a chemical that binds metals such as lead, to treat lead…

A: The molecular formula of Ethylenediaminetetraacetic acid (EDTA) is C10H16N2O8. We know that the…

Q: Which one of the following is not equivalent to one mol of the substance? 65.39 g Zn O 14.01 g N 8.0…

A: We are to check which of given options is not equivalent to 1 mole of it. And secondly we need to…

Q: What is the mass of 4.63 x 1012 atoms of Fe? O 2.73 x 10-10 g O 4.29 x 10-10 g O 9.76x 10-10 g O…

A:

Q: The molar mass of Fluorine (F) is 19.0 g/mol. Calculate the molar mass of F2. O 6.31 x 10-23 g/mol…

A: Molar mass of a compound is the sum of individual elements multiplied by their molar masses.

Q: What is the molecular formula of the following compound? Empirical formula: NH2 (M= 32.05 g/mol):

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Q: One mole of oxygen molecule (O2) contains how many atoms of oxygen? O a. 6.022 x 1023 O b. 6.022 x…

A: Applying concept of moles and avogadro number.

Q: Calculate the molar mass of each of the following compounds: a. ZnO, zinc oxide Molar mass = g/mol…

A: Given compounds: a. ZnO, zinc oxide. b. BCl3, boron trichloride. c. C6H8O6, ascorbic acid (vitamin…

Q: Catnip's mass composition is 72.3% C, 8.4% H, and 19.3% O). Its molar mass is 166.2 g/mol. Deduce…

A: Empirical Formula :- It is the simplest ratio of number if atoms present in  a molecule.  Molecular…

Q: A chemical reaction occurs that involves combining 1 atom of zinc with 2 atoms hydrogen and 2 atoms…

A:

Q: (3.9) How many grams of hydrogen are present in 255 mL of propane at room temperature? The density…

A: Hydrocarbon are the organic compounds made up of carbon and hydrogen.  There are aliphatic and…

Q: The molecular formula for paracetamol is C3H,NO2. How many moles of C atoms are present in a 10.0 g…

A: Molecular formula of paracetamol is C8H9NO2 Molecular weight of paracetamol is  =  8 carbon atom = 8…

Q: The empirical formula for Antifreeze is CH,O. What would be the molecular formula if the mass of…

A:

Q: A compound has an empirical formula of HgCl. If the molecular mass of the compound is 472.2 g/mol,…

A: Here we are required to find the molecular formula.

Q: A compound contains arsenic and oxygen as its only elements. A 1.626 g sample of the compound…

A: For finding the emperical formula, first find out the number of moles of each component. Then divide…

Q: 3. What is the mass percent of oxygen in Al2(SO4)3 18H2O? (molar mass is 666.43 g/mole) (A) 9.60 %…

A: Dear student I have given answer to your question in the image format.

Q: How many Cl atoms are there in 50 g of AIC13 (Molar mass: 133.34 g/mol) ? OA 4.64 x 1026 O B. 5.00 x…

A: Given, Mass of AlCl3 = 50g Molar mass of AlCl3 = 133.34 g/mol Moles of AlCl3 = 50 g133.34 g/mol =…

Q: A pure sample of an unknown molecule has a mass of 35.51 g and contains 0.2000 moles. What is the…

A: 177.55 g/mol

Q: Research suggests that a daily dose of 85 mg aspirin (molar mass = 180.17 g), may reduce a person's…

A:

Q: A compound with a percent composition by mass of 24.61% C, 2.75% H, and 72.64% Cl has a molar mass…

A: Molecular formula tells the number of atoms of each element in the molecule.

Q: %3D The mass of 2.21 x 1040 atoms of iron (molar mass = 55.845 g/mol) is O 2.78 x 104 g. 2.05 x 102g…

A:

Q: How many silicon atoms are present in a sample of 32.8 g of silicon? The molar mass of silicon is…

A: Given : Mass of silicon i.e Si = 32.8 g And molar mass of Si = 28.09 g/mol.

Q: What is the mass of 4.63 x 1012 atoms of Fe? 9.76 x 10-10 g O 1.62 x 10 10g O 1.08 x 10-10 g O 2.73…

A:

Q: Calculate the molar mass for each of the following compounds: CH₂ g/mol (a) cyclopropane, CH₂ Molar…

A:

Q: 4 NH3 (g) + 7 O2 (g) → 4 NO2 (g) + 6 H2O (g) The combustion of 210 g of ammonia consumes __________…

A:

Q: How many moles of atoms are contained in the following? (d) 14.8 g CH3OH (e) 2.88 g Na2SO4…

A: Given: mass of CH3OH = 14.8 g mass of Na2SO4 = 2.88 g mass of ZnI2 = 4.20 lb = 1905.09g molar mass…

Q: Which one of the following is not equivalent to one mol of the substance? O 65.39 g Zn O 14.01 g N O…

A: Given: To identify which option is not equivalent to 1 mole.

Q: A molecular cluster is formed from iron atoms and carbon monoxide (CO) molecules. If the molar mass…

A: The chemical formula of a compound in which elements are present in the simplest whole number molar…

Q: 17. What is the molecular formula if the empirical formula is C2HS and the molecular molar mass is…

A:

Q: 4. The mass of silicon atoms is * no. of Si atoms 1.63x102 atom [Avogadro's = O 1.04 x 10 g O 4.58 x…

A: Given,  Number of Si atoms =   1.63 x 1021 atoms  Calculate the mass of Si atoms = ?  Options are :…

Q: Phosphoric acid is a colorless, syrupy liquid used in detergents, fertilizers and carbonated…

A: Phosphoric acid symbol is H3PO4

Q: Calculate the percent by mass of each element in the following compounds: Calculate the mass percent…

A:

Q: What is the molar mass of ibuprofen, C13H1802? 377.7 g/mol 29.0 g/mol 206.3 g/mol 289.4 g/mol

A: The structure of given molecule ibuprofen is,

Q: How many O atoms are present and what is their combined mass per mole of Ca3(PO4)2? Mass Ca = 120.24…

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Q: Isoprene is a starting material in the formation of synthetic rubber. It is composed of 88.17%…

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Q: What is the mass of 4.63 x 1012 atoms of Fe? O 8.96 x 10-10 g O 4.29 x 10-10 g O 2.73x 10-10g O 1.62…

A:

Q: Find the number of P atoms in 0.200 g of P4. (P=30.97) 3.89 x 1021 O 9.70 x 1026 6.02 x 1023 1.12 х…

A:

Q: How many P atoms are present and what is their combined mass per mole of Ca3(PO4)2? Mass Ca = 120.24…

A: Given: Mass of Ca= 120.24 g Standard data: The molar mass of Ca3(PO4)2 =310.18 g/mol The molar…

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.