! ( do 4th one with full explanation in typed form , not handwritten ) How many molecules of sodium carbonate are contained in a (9.0x10^1) g Sodium carbonate (Na2CO3) sample? (answer to 2 decimal place)How many molecules of oxygen atoms are contained in a (1.5x10^2) g Sodium carbonate (N22CO3) sample? (answer to 2 decimal place)How many moles of Fe is in Fe(NO3)2What is the mass percent of M9SO4 in MgSO4° 7H2O ? (answer to 2 decimal place)

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What is the mass percent of MgSO4 in MgSO4• 7H2O ? (answer to 2 decimal place)

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter3: Molecules, Moles, And Chemical Equations

Section: Chapter Questions

Problem 3.79PAE: 3.79 Consider two samples. Sample A contains 2 moles of N2 and 1 mole of O2, and Sample B contains 1...

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! ( do 4th one with full explanation in typed form , not handwritten )

How many molecules of sodium carbonate are contained in a (9.0x10^1) g Sodium carbonate (Na2CO3) sample? (answer to 2 decimal place)
How many molecules of oxygen atoms are contained in a (1.5x10^2) g Sodium carbonate (N22CO3) sample? (answer to 2 decimal place)
How many moles of Fe is in Fe(NO3)2
What is the mass percent of M9SO4 in MgSO4° 7H2O ? (answer to 2 decimal place)

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