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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

What amount of NaTcO4 is there in 1.0 μg of the salt? What mass of Tc?

Interpretation Introduction

Interpretation:

The amount of NaTcO4in1.0μg of salt and the mass of Tc in it has to be determined.

Concept introduction:

  •                   Numberofmole=GivenmassofthesubstanceMolarmass
  • The molar mass of an element or compound is the mass in grams of 1 mole of that substance, and it is expressed in the unit of grams per mol (g/mol).
  • Massofthesubstance=Amountofthesubstance×Molarmass
Explanation

Using the following equation amount of NaTcO4 can be calculated,

    Amount of NaTcO4=GivenmassofNaTcO4MolarmassofNaTcO4

Given mass of salt is 1.0μg=1.0×106g

Molar mass of NaTcO4 is 184.9g/mol

Amount ofNaTcO4=1.0×106g184

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