Metric system and conversion factors names and formulas molar mass isotopes perc
ID: 1073665 • Letter: M
Question
Metric system and conversion factors names and formulas molar mass isotopes percent composition concentration and dilution gas laws types of substances and principal species in solution pH We began our studies learning about 'conversion factors." Specifically, we learned how to convert between the various units of the metric system. For example, if we wanted to know how many meters there are in 2.5 miles and we DIDN'T have a fancy Google calculator but we knew the following information: 1 mile = 5280 ft 2.54 cm = 1 in 12 in = 1 ft we could write: The reason conversion factors work so well in chemistry is that chemical substances have fixed ratios of elements. This is expressed in chemistry using chemical formulas. For example, carbon monoxide is _, iron(lll) nitrate is _, ammonia is _, and phosphoric acid is _.Explanation / Answer
A) 1 mole = 5280ft therefore,
2.5 miles = [2.5 x 5280] / 1 = 13200 ft
Now, 1 ft = 12 inch therefore,
13200 ft = [ 13200 x 12 ] / 1 = 158400 inch
Now, 1 inch = 2.54 cm
158400 inch =[ 158400 x 2.54 ] / 1 = 402336 cm
And now, 100 cm = 1 meter
402336 cm = [ 402336 x 1 ] / 100
= 402336 / 100
= 4023.36 meter.
B)
Carbon monoxide = CO ( 1 carbon, 1 oxygen )
Iron nitrate = Fe(NO3)3 [ 1Fe & 3 NO3 ] [ 1NO3 carries -1 charge therefore 3No3 carries -3 charge = III]
Ammonia = NH3 [ 1 Nitrogen & three Hydrogen ]
Phosphoric acid = H3PO4