Suppose the masses of Sodium chloride and water provided in the table represent the mass of a level teaspoon of the substance, explain why the number of atoms and moles are different when the volumes are nearly identical?

Q: Compound X has a molar mass of 153.05·gmol−1 and the following composition: element…

A: We have given that Element mass % carbon 47.09% hydrogen 6.59% chlorine 46.33%…

Q: Complete the table. Number of Particles (atoms Substance Mass Moles or molecules) Ar 4.5 x 10-4 NO2…

A: Ar : Mass of Ar = moles x molar mass                   = 4.5 x 10-4 x 40                   = 1.80 x…

Q: What is the mass in grams(a,b)/ name the ionic compound (c,d)/ name the ionic compound containing a…

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Q: 1.    Determine the mass percent of each element in the following compound: Na3C10H18O5

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

Q: Calculating Molar Masses of Compounds Just add together the molar masses of all the elements in the…

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Q: How many sulphur atoms are contained in 30 g of Al2(S04)3 (Molar mass: 342.15 g/mol) ? OA 5.78 x…

A: Applying no. of moles  n= w/M  NA= 6.022E+23

Q: Calculate the number of C atoms in 5.50 g of C. 6.02 x 10 23 C atoms O 3.31 x 10 24 C atoms O 5.01 x…

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Q: How many hydrogen atoms are present in 4.5 moles of C6H6? 1.6 x 1025 H atoms 4.5 x 1023 H atoms 27 H…

A: Solution -

Q: A molecular compound is found to consist of 26.0% nitrogen and 74.0% oxygen. If the molecule…

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Q: Compound Elements Total mass No. of atoms of each element in (Molar Mass formula X atomic of…

A: Given compounds :                CO2                                                C2H6…

Q: How many bromine atoms are in 1.25 mols of Br? O2.08 x 10-24 atoms O 4.82 x 1023 atoms 7.53 x 1023…

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Q: How many atoms of zinc are present in a sample that contains 7.79×102 grams of zinc?The molar mass…

A: The mass of one gram atom is equal to the mass of 6.022× 1023 atoms of any element. Thus, it is…

Q: What is the molar mass of Al2(Cr2O7)3?    809.8554 g/mol B. 269.9518 g/mol C. 401.9448 g/mol…

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Q: Determine the chemical formula of each compound and then use it to calculate the mass percent…

A: a.

Q: What is the molar mass of 27.8 mg of a compound that is made up of 3.80 x 1020 molecules? 44.1 g/mol…

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Q: What is the molar mass of H2SO4? (Molar mass of H = 1.0079 g/mol; S = 32.065 g/mol; O = 15.999…

A: 6.022×1023 = 1 mole = Avogadro Number Molar mass :-  The mass of one mole of atoms or molecules is…

Q: Without doing any calculations, determine which element in each of the compounds will have the…

A: Which atoms and how many of the atoms in the form of element composition are present in the chemical…

Q: has a molar mass of 86.09·gmol−1 and the following composition: element mass % carbon 55.81%…

A: Introduction : Empirical Formula : An empirical formula represents the simplest whole number ratios…

Q: What mass of oxygen difluoride OF2, contains the same number of fluorine atoms as 5.20 g of…

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

Q: Avogadro’s number is defined as   the number of atoms in exactly 12 g of carbon-12. the number of…

A: Which one of the following is correct

Q: The molecular formula for paracetamol is C3H9NO2. How many moles of C atoms are present in a 10.0 g…

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Q: How many hydrogen atoms are contained in 3.64 g of PtCl2(NH3)2? O4.90 x 1022 O9.79 x 1022 О4.38 х…

A: Molar mass of PtCl2(NH3)2 is given by  Molar mass = Atomic mass of Pt + Atomic mass of Cl X 2 +…

Q: Which one of the following is not equivalent to one mol of the substance? O 8.0 g He O 6.02 x 1023 C…

A: The correct option is:

Q: Formula Molar mass of ion   Number of ions   Mass of ion in one mole of barium iodide Cation Ba2+…

A: We have to just collect data and then add them up

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: Compound X has a molar mass of 153.05·gmol−1 and the following composition: element mass % carbon…

A: Given Compound X has a molar mass of 153.05·gmol−1   element mass % carbon 47.09% hydrogen 6.59%…

Q: Given molar mass, find the mass in grams of each of the following substances: 2.11 x 1024 201 x 1023…

A: 3. Given that : The number of molecules of CH4 = 3.990 x 1025 molecules The molar mass of CH4 is…

Q: Part 5-Calculating the molar mass (10 points)- You will need the periodic table for this part of the…

A: 1 mole of substance = 6.022 x 1023 unit (It may be atom or particle or ion).

Q: Most fertilizers consist of nitrogen-containing compounds such as NH3, CO(NH2)2, NH4NO3, and…

A: The compounds which are used as fertilizers are given as NH3, CO(NH2)2, NH4NO3, and (NH4)2SO4.

Q: The percent composition by mass of a compound is 68.8% C, 4.92% H, and 26.2% O The molar mass of…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: What is the mass of 5.45 x 10 -3 mol of glucose C 6 H 12 O 6? O a. 981 g b.0.981 g O c. 0.158 g O…

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Q: Compound X has a molar mass of 230.30·gmol−1 and the following composition: element mass % carbon…

A: Given Compound X has a molar mass of 230.30·gmol−1 element mass % carbon 62.58% hydrogen 9.63%…

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: The molar mass of a compound is the sum of the atomic molar masses for the elements in the compound,…

A: Given, The molar mass of a compound is the sum of the atomic molar masses for each element in the…

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: An unknown hydrocarbon is subjected to elemental analysis. It is determined to be 85.6% carbon and…

A: Mass % of Carbon = 85.6% Mass % of Hydrogen = 14.4% Empirical formula =?

Q: How many moles of carbon tetrachloride are present in 3.17 x 10^22 molecules of this compound?…

A: Given,  The moles of carbon tetrachloride are present in 3.17 x 10^22 molecules of this compound?…

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: Complete the table below for calculating the formula weight of the ionic compound iron(I) iodide,…

A: Formula weight is the sum of atomic weights of atoms present in a compound.  Atomic weight is the…

Q: Without doing any detailed calculations (but using a periodic table to give atomic weights), rank…

A: Each mole of any molecule contains Avogadro no of molecules i.e 6.023x10^23. It is true for every…

Q: What is the mass percent composition of Chromium (II) bromide? The molar mass of chromium is 52.00…

A: Given data The molar mass of chromium is 52.00 g/mole  and The molar mass of bromine is 79.90…

Q: What amount (moles) is represented by each of these samples? a. 20.8 mg caffeine, C3H10 N4O2 Amount…

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Q: Complete the table below for calculating the molar mass of the ionic compound copper(II) bromide.…

A: The molar mass of an ionic compound is the sum of the mass of the constituting ions present in 1 mol…

Q: Which one of the following is not equivalent to one mol of the substance? O 65.39 g Zn O 55.85 g Fe…

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Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

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Q: Elements B and N form a binary compound BxNy. When 12 grams of this compound was made from its…

A: Empirical formula of a compound is the simplest positive integer ration of atoms present in the…

Q: What number of molecules (or formula units) are present in 2.25 g of each of the following…

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Q: 3.Allicin is a compound known to be the cause of the distinct smell of garlic. If an analysis of the…

A: Determination of empirical formula   The percentage composition of elements present in given…

Q: How many moles are there in each sample? 55.0 g Ti 16.9 mg Na 7.95 x 10^24 Ne atoms

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

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.