Single Row

Single Row

A gold atom has a diameter of 0.288nm. How many miles long would a single row of 3.00 moles of gold atoms be?

This has to be answered using the Factor-Label Method (Dimensional Analysis). Please help ASAP!!

A mol of something is 6.02X10^23. Therefore, multiply 3 x 6.02X10^23 x (your conversion factor to get from nm to miles). To convert nm to miles you do the following: (0.288 nm) x (m / 1X10^9nm) x (100 cm / m) x ( inch / 2.54 cm) x (foot / 12 in) x (mile / 5280 ft) = 1.789549X10^-13.

So, multiply 3 mol x (6.02X10^23 gold atoms / mole) x (1.789549X10^-13 miles / gold atom) = 3.231925X10^11 miles. With sig figs that is 3.23X10^11 miles.

Just for comparison, the circumference of the earth is approx 25,000 miles... this means your string of gold could wrap around the earth almost 13 million times!

 

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There are many advantages to the floor plans of the House of town, particularly for renters and urban dwellers. Years ago, this kind of plane is known as a "house of the line. "Townhouses are generally multi-story units that are attached to units on either side give the neighbors living in closely similar housing-style apartment. Once found in abundance in large cities, houses can be found throughout the country.

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Article Source: ArticlesBase.com - Town House Floor Plan | Row Houses For Urban Dwellers