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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

You can identify a metal by carefully determining its density (d). An unknown piece of metal, with a mass of 2.361 g is 2.35 cm long 1.34 cm wide, and 1.05 mm thick. Which of the following is the element?

(a) nickel, d = 8.91 g/cm3

(b) titanium, d = 4.50 g/cm3

(c) zinc, d = 7.14 g/cm3

(d) tin. d = 7.23 g/cm3

Interpretation Introduction

Interpretation: The unknown element to be identified.

Concept Introduction:

Density: Is a characteristic property of a substance. The density of a substance is the relationship between the mass of the substance and how much space it takes up (volume).

Density = MassVolume

Explanation

Reason for true statements

  Calculate the Density:Given: long = 2.35 cm ;wide =1.34cm; thick (height) = 0.105 cm;mass =2.361 gVolumeof the Reactangle = l×w×h = 2.35 × 1.34 × 0.105 = 0.330645 cm3Known: density =MassVolumeWhereas,Density =MassVolume = 2

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