Penny Lab, Chemistry

Assignment Help:
Pennies made after 1982 are made of 97.5% zinc and 2.5% copper instead of 95% copper and 5% zinc. Pree 1982 pennies weighed 3.10g. The penny contained 2.95g of zinc and 0.15g of copper. In September 2011 the cost of zinc was $0.88/lb and the cost of copper is $3.41/lb. How much would it cost to make an "old" penny? (1lb=454g)

Related Discussions:- Penny Lab

Bond theory, describe valence bond theory and its limitations

describe valence bond theory and its limitations

Electron configurations and orbital diagrams, Q. Describe Electron Configur...

Q. Describe Electron Configurations and Orbital Diagrams? Ans. Remember that the atomic number of an atom tells us the number of protons and electrons in the neutral atom. To a

Choromatography, what is the name materyal of use in plate choromatgraphy

what is the name materyal of use in plate choromatgraphy

Kinetic particle theory, 2 thermometers, A and B, are wrapped in pieces of ...

2 thermometers, A and B, are wrapped in pieces of gauze. The gauze around thermometer A is moistened with water and the gauze around thermometer B is moistened with Ether(a volatil

Transitions metal, write a note on the oxide of 3d transition metal

write a note on the oxide of 3d transition metal

why do soaps not work under hard water , The Ca 2+ and Mg 2+ ions in har...

The Ca 2+ and Mg 2+ ions in hard water form scum with soap. Therefore they don''t form lather and therefore don''t clean the dirt.

Uses of acetylene - hydrocarbon, Uses of Acetylene (a) Acetylene is uti...

Uses of Acetylene (a) Acetylene is utilized as an illuminant. (b) It is utilized for the production of oxy-acetylene flame. The high temperature of the flame is above. Is ut

Define heat of combustion, The amount of heat liberated when single mole of...

The amount of heat liberated when single mole of any substance is completely burnt in oxygen is known as heat of combustion H is negative for heat of combustion.

The lengths of the c-c bonds in isobutene, The lengths of the C-C bonds in ...

The lengths of the C-C bonds in isobutene The lengths of the C-C bonds in isobutene have no significance; two are longer merely to accommodate the rest of the structure. Rememb

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd