15 What is the molar mass of argon such that the mass of 0.05mol of this gas is about 2g ? 6/The molar mass of iron i : M(Fe) = 56 g. mol" %3D a) Calculate the number of atoms present in 0.28g of iron. b) What mass of iron corresponds to 0.18 mol of iron ? 17 a) Calculate the mass of a nitrogen atom. b) Calculate the mass of 2.5 mol of nitro- gen atoms. M(N) = 14g.mol %3D 18/It is given 25.4g of copper : a) Calculate the number of copper atoms in the given sample. b) Calculate the number of mol of copper in the given sample M(Cu) = 64 g.mol" -1 %3D

15 What is the molar mass of argon such that the mass of 0.05mol of this gas is about 2g ? 6/The molar mass of iron i : M(Fe) = 56 g. mol" %3D a) Calculate the number of atoms present in 0.28g of iron. b) What mass of iron corresponds to 0.18 mol of iron ? 17 a) Calculate the mass of a nitrogen atom. b) Calculate the mass of 2.5 mol of nitro- gen atoms. M(N) = 14g.mol %3D 18/It is given 25.4g of copper : a) Calculate the number of copper atoms in the given sample. b) Calculate the number of mol of copper in the given sample M(Cu) = 64 g.mol" -1 %3D

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 29QAP: When elemental carbon is burned in the open atmosphere, with plenty of oxygen gas present, the...

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