The Mole 1 dozen items = 12 items 1mole of item = 6.022 x 10^23 items Critical T
ID: 912337 • Letter: T
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The Mole 1 dozen items = 12 items 1mole of item = 6.022 x 10^23 items Critical Thinking Questions How many Sticks of gum are in a pack that contains a dozen? Which has more, a dozen of sticks of gum or a dozen of root beer barrels? How many root beer barrels are there in 1 mole of root beer barrels? Which has more, a mole of sticks of gum or a mole of root beer barrels? Which has more, a mole of Carbon atoms or a mole of Neon atoms? Which has more atoms:6.50 moles of Carbon or 10.0 moles of Neon? A very tiny grain of sand weights ~7x10^-4 grams. How much would a mole of these tiny grains of sand weight in tons (on Earth: 1 kg = 2.205 lbs and 1 ton = 2000 lbs)? One of the these dump trucks will a mole of tiny grains of sand fill up? Naturally occurring Chlorine is composed of ^35CI and ^37CI. The mass of ^35CI is 34.9689 amu and the mass of ^37CI is 36.9659 amu. The average atomic mass of Chlorine is 35.453 amu. What is the percent abundance of^35CI and ^37CI?Explanation / Answer
13. a. 12 sticks
b. dozen of stick gum contains 12 sticks and a dozen of root beer contains 12 beers two are same
c.1 mole = 6.023*10^23 beer barrels
d. a mole of sticks = 6.023*10^23 sticks
a mole of root beer bareels = 6.023*10^23 beers
two are same
e.a mole of carbon = 6.023*10^23 atoms
a mole of neon = 6.023*10^23 atoms
two are same
14. no of atoms = no of moles*6.023*10^23
= 6.5*6.023*10^23 = 13.149*10^23 carbon atoms
= 10*6.023*10^23 = 60.23*10^23 neon atoms
So 10 m0les of Neon contains more atoms
16. Cl^35 let x
Cl^37 let 1-x
35.453 = 34.9689*x + 36.9659*1-x
= 34.9689x +36.9659-36.9659x
0 = 34.9689x-36.9659x+36.9659-35.453
0 = -1.997x+1.5129
1.997x = 1.5129
x= 0.7575
Cl^35 = 75.75%
Cl^37 = 25.25%
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