1.If Mr.Monden offers you 10 dollars/hour to sort through hi

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1.If Mr.Monden offers you 10 dollars/hour to sort through his comic book collection,and Ms Chow offers you 2.5 centicents/decisecond to play scrabble with her,who should you work for and why?
2.A car is Japan claims to have a gas mileage of 15 km/L,my Prius generally averages 41 miles/galloon,which has better average mileage (1 galloon=4 quarts,and 1L=1.06 quarts)?
3.Write a pair of conversion factors for the numbers of atoms in 1mol of C...then 1 mol of P...then 1mol of Na...so this means 6 conversion factors in total:
4.what is the mass of 4.6 moles of carbon dioxide?
5.Chloral Hydrate (C2H3CL3O2) used to be used as sedative and hypnotic...how many atoms of JUST carbon are there in 400 grams of chloral hydrate?

1、Mr.Monden ：10美元/小时
Ms Chow：2.5美分/10秒=15美分/分钟=900美分/小时=9美元/小时
work for Mr.Monden,because he offers much more money than Ms Chow.
2、1 galloon=4 quarts,and 1L=1.06 quarts,1mile=1.609km
15 km/L=15km/(1.06quart)=14.15km/quart
41 miles/galloon=(41/1.609)km/(4quarts)=16.49km/quart
my Prius has better average mileage
3、1mol C = 12g,1mol C = 6.02*10^23 carbon atoms
1mol P = 31g,1mol P = 6.02*10^23 phosphorus atoms
1mol Na = 23g,1mol Na = 6.02*10^23 sodium atoms
4、4.6*44=202.4g
5、 400/165*2=4.85mol
the numbers of atoms of carbon are 4.85 moles

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