Calculate the number of moles in 3.47 g of each of...

Question

Calculate the number of moles in 3.47 g of each of the following:Part A. HePart B. SnO2Part C. Cr(OH)3Part D. Ca3N2

Jules Bruno · Accepted Answer

We’re being asked to calculate the number of moles in 3.47 g of each of the given substance.The calculation will be like this:   mass (molar mass) → molesPart A. Hemolar mass He = 4.003 g/molmoles He=3.47 g He×1 mol He4.003 g Hemoles He = 0.867 mol HePart B. SnO2[readmore]molar mass SnO2:SnO2              1 Sn x 118.71 g/mol = 118.71 g/mol                        2 O x 16.00 g/mol = 32.00 g/mol                   _______________________________                                     Sum = 150.71 g/molmoles SnO2=3.47 g SnO2×1 mol SnO2150.71 g SnO2moles SnO2 = 0.0230 mol SnO2Part C. Cr(OH)3molar mass Cr(OH)3:Cr(OH)3          1 Cr x 51.996 g/mol = 51.996 g/mol                       3 O x 16.00 g/mol = 48.00 g/mol                       3 H x 1.008 g/mol = 3.024 g/mol                   _______________________________                                     Sum = 103.02 g/molmoles Cr(OH)3=3.47 g Cr(OH)3×1 mol Cr(OH)3103.2 g Cr(OH)3moles Cr(OH)3 = 0.0337 mol Cr(OH)3Part D. Ca3N2molar mass CaN3:Ca3N2             3 Ca x 40.078 g/mol = 120.234 g/mol                       2 N x 14.01 g/mol = 28.02 g/mol                   _______________________________                                     Sum = 148.254 g/molmoles Ca3N2=3.47 g Ca3N2×1 mol Ca3N2148.254 g Ca3N2moles Ca3N2 = 0.0234 mol Ca3N2

Problem: Calculate the number of moles in 3.47 g of each of the following:Part A. HePart B. SnO2Part C. Cr(OH)3Part D. Ca3N2

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Problem Details

Problem: Calculate the number of moles in 3.47 g of each of the following:Part A. HePart B. SnO2Part C. Cr(OH)3Part D. Ca3N2

FREE Expert Solution

Problem Details

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