Given the following masses of samples, find the total number of molecules and total number of atoms in the sample a) 3.24 g H2O b) 2.19 g CO2 c) 0.312 g CH3OH

Q: Question attached

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Q: Determine the mass of the sample below. a) 9.11 x 1023 molecules of C15H21N3O15

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Q: The molecular weight of Carbon is 12.0 g/mole. How many moles of Carbon in 18 g of Carbon?

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

Q: 7. Determine the empirical formula of a compound whose composition is 50.1% S and 49.9% O.

A: Convert the mass percent to grams : Thus 100 g sample of above compound contain 50.1 g Sulphur(S)…

Q: Determine the number of molecules in 34.8 grams of CO₂.

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A: Number of molecules in 38.6 g of CO2 can be calculated as :

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Q: Calculate the number of carbon atoms in 15.0 g of carbon.

A: The given data contains, given mass = 15.0 g. molar mass of carbon = 12 g/mol.

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A: 54.0% C, 13.73% H, 31.77% N.

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A: The given mass of NO2 = 25.5 g Molar mass of NO2 = 46 g/mol.

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Q: A 100.00 g sample of the compound XCl3 is decomposed to produce 90.77 g of the element chlorine.…

A: The reaction taking place will be  2 XCl3 -----> X2 + 3 Cl2  Hence moles of Cl2 formed / moles of…

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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.