U M- University of Kentucky C.. x M Mail McFarland, William Lx W Trigonal planar

Question

U M- University of Kentucky C.. x M Mail McFarland, William Lx W Trigonal planar molecular g. .com/ibiscms/mod/ibislview.php?id 2926212 e searc 12/9/2016 11:55 PM 83,sl100 G8/28/2016 02:51 PM Grade boo Print Calculator Periodic Table Question 2 of 10 Incorrect Sapling Learning Tin has ten stable isotopes. The heaviest, 2'sn, makes up 5.80% of naturally occuring tin atoms. How many atoms of sn are present in 35.0 g of naturally occurring tin? atoms What is the total mass of the ousn atoms in this sample? e Previous & Give up & View solution 2 Check Answer 0 Next Exit about us l careers partners privacy policy terms of use contact us help

Explanation / Answer

Calculate mass of Sn 124 = 125 g/mol approx

so

in m = 35 g

then

mol = mass/MW = 35 / (124) = 0.2822580645 mol

6.022*!0^23 atoms = 1 mol

0.2822580645 mol --> (0.2822580645)(6.022*10^23) = 1.6997*10^23 atoms

for...

b)

total mass

for a 100 g sample

assume this is only 5.8%

so

124*0.058 = 7.19 g sample

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