Even though cement and bread are not substances, they can help you to understand theseconcepts:Whatever you do to volume affects mass the same way.Whatever you do to mass affects volume the same way.If you have half as much of a material, you would expect the volume of the material to also behalf as much. If you have twice as much of the material, you would expect its volume to also betwice as much. Substances, which you know are always the same throughout, will follow thisrule. This relationship between mass and volume will stay the same for any substance, no matterhow much of that substance you can sample and measure in the classroom.Why is this principle about the relationship between mass and volume always true ofsubstances, but not always true of mixtures?

Mass and volume are interconnected with each other and they are always true for the substances but…

Answered: WOOJSSPIO an u ainspauL DUP aidups upn…

WOOJSSPIO an u ainspauL DUP aidups upn no Why is this principle about the relationship between mass and volume always true of substances, but not always true of mixtures?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 121CP: On October 21, 1982, the Bureau of the Mint changed the composition of pennies (see Exercise 120)....

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On October 21, 1982, the Bureau of the Mint changed the composition of pennies (see Exercise 120). Instead of an alloy of 95% Cu and 5% Zn by mass, a core of 99.2% Zn and 0.8% Cu with a thin shell of copper was adopted. The overall composition of the new penny was 97.6% Zn and 2.4% Cu by mass. Does this account for the difference in mass among die pennies in Exercise 120? Assume the volume of the individual metals that make up each penny can be added together to give the overall volume of the penny, and assume each penny is the same size. (Density of Cu = 8.96 g/cm3; density of Zn = 7.14 g/cm3).
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