A student weighed their penny (mass 2.499 g) and followed the same experimental procedure you did in the lab. They found that the penny contained 0.0980 g of copper, or, 3.92%. Estimate the thickness of the copper coating with the following formula. From the US Mint website: the diameter of a penny is 19.05 mm and the thickness is 1.52 mm. The density of copper is 8.96 g/cm3. TIP: your final answer will have the units of cm (think about what to do first..). mass of Cu/ volume density of Cu Thickness of Cu Coating = area diameter + T(diameter) (thickness)

A student weighed their penny (mass 2.499 g) and followed the same experimental procedure you did in the lab. They found that the penny contained 0.0980 g of copper, or, 3.92%. Estimate the thickness of the copper coating with the following formula. From the US Mint website: the diameter of a penny is 19.05 mm and the thickness is 1.52 mm. The density of copper is 8.96 g/cm3. TIP: your final answer will have the units of cm (think about what to do first..). mass of Cu/ volume density of Cu Thickness of Cu Coating = area diameter + T(diameter) (thickness)

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter1: The Nature Of Chemistry

Section: Chapter Questions

Problem 116QRT

See similar textbooks

Similar questions

a thin sheet of nickel measured 5.00 cm by 7.00 cm was found to weigh .350 g. if the density of nickel is 8.90 g/cm3, what is the thickness of this sheet?
When 89.329 g of an irregularly shaped sample of cobalt was placed in a container and filled to the 25.00 mL mark with ethyl alcohol, the combined mass of the cobalt and ethyl alcohol was 105.9979 g. What is the density of this element, if the density of the ethyl alcohol is 1.114 g/mL? Assume the volumes are additive.
The German chemist Fritz Haber proposed paying off the reparations imposed against Germany after World War I by extracting gold from seawater. Given the following data, what was the dollar amount of the gold that could have been extracted from 3.0 m3 of seawater? The price of gold at the time was $0.68 per gram of gold. Gold occurs in seawater to the extent of 5.15 x 1011 atoms per gram of seawater. The density of seawater is 1.03 g/cm3.
You are working in the laboratory and are testing the salinity of ocean water in various areas along the gulf coast. What is the mass % of sodium chloride in a 250.0 mL sample that contains 6.80 g sodium chloride? Assume the density of the ocean water is 1.03g/mL.
A manufacturer of paint claims that a gallon (3.78L) of latex paint can cover 365 ft2 of the surface of a wall in a single coating. The paint manufacturer also claims that one single coating of an entire wall will be 3.40 mm thick. Is this a case of false advertising? Yes or No? Elaborate your answer by providing a calculation. You may use the following conversions: 12 in = 1 ft, 2.54 = 1 in
A 330 mg piece of gold (density = 19.3 gcm3) is hammered into a sheet of gold leaf that has a length of 1.76 in and a width of 2.07 in. What is the average thickness of the sheet in meters?
An engineer is working with archaeologists to create a realistic Roman village in a museum. The plan for a balancein a marketplace calls for 100 granite stones, each weighing 10 denarium. (The denarium was a Roman unit of mass:1 denarium = 3.396 g.) The manufacturing process for making the stones will remove 20% of the material. If the graniteto be used has a density of 2.75 g/cm3, what is the minimumvolume of granite that the engineer should order?
In the area of nano-chemistry, particles defined as nanoparticles range in size from 1-2500 nm. 1 nm is equivalent to 1 × 10–9 m. If the size of the particles that make up a particular material is 1.23 × 10–8 cm, what is this size in nanometers?
Which piece of equipment would you use to measure 7.10 mL of CuSO4 (aq)?
. A sample of an ethanol-water solution has a volume of 52.5 cm³ and a mass of 49.6 g. What is the percentage of ethanol (by mass) in the solution? (Assume that there is no change in volume when the pure compounds are mixed.) The density of ethanol is 0.789 g/cm³ and that of water is 0.998 g/cm³. Percentage of ethanol = b. Alcoholic beverages are rated in proof, which is a measure of the relative amount of ethanol in the beverage. Pure ethanol is exactly 200 proof, a solution that is 50% ethanol by volume is exactly 100 proof. What is the proof of the given ethanol-water solution? proof Submit Answer % [References] Try Another Version 10 item attempts remaining
International computer communications are often carried by optical fibers incables laid along the ocean floor. If one strand of optical fiber weighs 1.19X.10³lb/m,what is the mass (in kg) of a cable made of six strands of optical fiber, each long enough to link New York and Paris (8.84X.10³km)?
A cylindrical glass tube of length 25.75 cm and radius 2 cm is filled with argon gas. The Empty tube weighs 186.25 g The tube filled with argon weighs 186.87 g. Use these data to calculate the density of argon gas