One mole is 6.023 X 10^23How many times would a single mole of copper stretch around the world?
In aspects West of the united kingdom, that's nevertheless The Ides of March or Idus Martiae in Latin, or March 15, the day Julius Caesar became assassinated in 40 4 BC. In aspects East of the united kingdom, that's the day after or March sixteen: In Roman calenderical words,17 days in the past April a million. March a million used the be the 1st day of the three hundred and sixty 5 days in the past the creation of January & February.
You really need to know what is the thinnest possible diameter for a copper wire? You could assume it's a single row of copper atoms, but I don't think that would hold together. however, I feel that the purpose of the question is to assume it'll be a long long row of copper atoms lined up; how far would they stretch, and how many times would that go around the world? density of copper = 8960 kg/cubic metre or 8.96 g/cubic cm 1 mole of copper = 63.55 grams = 7.1 cm3 atomic radius 140 pico metres so we can imagine a long thin cylinder of copper, with a diameter of 280 picometres and a total volume of 7.1 cubic cm the rest of this problem is about converting units, so let's switch everything to metres and powers of 10: cross sectional area = 61544 sq pico metres = 0.0615 sq nanometres = 0.0615 x 10^-18 m (1 picometre = 1000 nanometres 1 nanometre = 10^-9 m) total volume /csa = length total volume = 7.1 cm3 = 7.1 x 10^-6 m3 so length = 7.1 x 10^-6 / 0.0615 x 10^-18 = 115 x 10^12 m = 1.15 x 10^11 km distance around the earth (at the equator) = 25000 miles or 40 000 km (4 x 10^4 km) 1.15 / 4 = 0.288 11 - 4 = 7 so that's 0.288 x 10^7 or 2.88 million So if you could line up copper atoms in single file, they would go around the earth nearly 3 million times. That's one long piece of copper. The earth's orbit round the sun is about 942 million km I reckon the mole of copper could stretch about 122 times around the earth's orbit!!
