heeeeeeelp Remember to show your work and box final answers Aluminum foil is alm

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Remember to show your work and box final answers Aluminum foil is almost 100% aluminum. Say a box of foil contains a roll 23.1 meters long and 29.7 cm wide. 1 he foil is 13 microns thick Calculate the volume of the roll in units of cubic meters Look up and write down the atomic mass of A1 and the density of solid Al. Calculate the number of aluminum atoms in the roll. You will need the above values. A copper-oxide sheet is a type of ceramic superconductor.* Calculate the attractive Columbic force between two ions in one of these sheets. The two ions are Cu2+ and Q:~. See examples.* (Interestingly, these are called fchigh-temperature superconductors because they display superconductivity as high as -135degreeC! Most superconductors require even colder temps closer to -243degreeC, or just 30 above absolute zero.)Glass can be given a colored tint by adding certain metal ions. The coordination of the ions with oxygen affects color. When Co2+ is surrounded by four 0:_ ions, the glass looks purplish-blue. When Co2+ has a six fold coordination, the glass looks pink. Calculate. the radius ratio for cobalt and oxygen ions (not the neutral atoms!) and then predict what color this coordination would give to glass

Explanation / Answer

a) 13 microns=1.3E-5 meter

29.7 cm= .297 meters

.297x23.1x1.3E-5= 8.92E-5 meters cubed

b)Atomic mass=26.98 g/mol

Density=2800 kg/m^3

c)Density x Voume (gives mass in kg)

Convert to grams by multiplying by 1000

divide by atomic mass (gives moles)

multiply by Avagadro's number (6.02E23)

answerr: 5.57E24

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