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tfracciscoramon
21.06.2019 •
Chemistry
What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen, and 48.68% fluorine? the molar mass of the compound is 156.12 g/mol
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Ответ:
Ans: Molecular formula = C₆H₈F₄
Given:
% C = 46.16
%H = 5.16
%F = 48.68
Calculate the # moles of each element:
moles of C = 46.16/12 = 3.847
moles of H = 5.16/1 = 5.16
moles of F = 48.68/19 = 2.562
Calculate the mole ratio:
C = 3.847/2.562 = 1.50
H = 5.16/2.562 = 2.0
F = 2.562/2,562 = 1.0
Empirical formula = C(1.5)H(2)F
Empirical formula mass = 12*1.5 + 1* 2+ 1*19 = 39 g/mol
Molecular mass = 156.12 g/mol
Ratio (n) = 156.12/39 = 4
Molecular formula = n(empirical formula) = 4(C1.5H2F) = C6H8F4
Ответ:
Malleability
Explanation: Malleability is a substance's ability to deform under pressure (compressive stress). If malleable, a material may be flattened into thin sheets by hammering or rolling. Malleable materials can be flattened into metal leaf. One well-known type of metal leaf is gold leaf.