QUESTION 14How many moles of benzene C6H6 are present in 390 grams of benzene.O 5 mol4.3 molO 6.7 molO 8 molQUESTION 157.00 moles of N2 molecule contains how many N atoms?O 8.44 X 1026 atomO 4.00 X 1024 atomO 8.44 X 1024 atomO2.44 X 1024 atom QUESTION 16A compound is found to contain 26.56% potassium, 35.41% chromium, and the remainder oxygen. Find its empirical formulaO K2Cr2O7O K₂Cr209OK2Cr203O K5Cr2O7QUESTION 17A 60.00 g sample of tetraethyllead, a gasoline additive, is found to contain 38.43 g lead, 17.83 g carbon, and 3.74 g hydrogen. Find itsempirical formula.PbC8H25O PbC8H20O PbC8H28O Pb4C8H25

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Answered: QUESTION 14 How many moles of benzene…

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QUESTION 14 How many moles of benzene C6H6 are present in 390 grams of benzene. 5 mol 4.3 mol 6.7 mol 8 mol

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter10: The Mole

Section10.4: Empirical And Molecular Formulas

Problem 61PP

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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.

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