1. How many moles of nitrite ions are present in a sample that contains 2.81 moles of copper(II) nitrite, Cu(NO2)2?_____ moles NO2-2. How many moles of Cu(NO2)2 are present in a sample that contains 6.50 moles of nitrite ions_____ moles Cu(NO2)2

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How many moles of nitrite ions are present in a sample that contains 2.81 moles of copper(II) nitrite, Cu(NO2)2? _____ moles NO2-

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

Chapter11: Stoichiometry

Section: Chapter Questions

Problem 3STP

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Concept explainers

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.

Question

1. How many moles of nitrite ions are present in a sample that contains 2.81 moles of copper(II) nitrite, Cu(NO₂)₂?

_____ moles NO₂^-

2. How many moles of Cu(NO₂)₂ are present in a sample that contains 6.50 moles of nitrite ions

_____ moles Cu(NO₂)₂

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