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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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jules_1978 jules_1978
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11 years ago
What is the mass percent of strontium in a 3.65 g sampleof an alloy.....

if it takes 32.5 ml of 0.547 M H2SO4 to precipitate all of the strontium.


im so lost someone please help
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#1
11 years ago
moles H2SO4 = 0.0325 L x 0.547 M = 0.0178
= moles Sr2+
mass Sr2+ = 0.0178 mol x 87.62 g/mol= 1.56

% Sr2+ = 1.56 x 100 / 3.65 = 42.7
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