At what temp does h2o melt
2 answers:
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Answer:
-0.93 °C
Explanation:
Hello,
The freezing-point depression is given by:
Whereas is the freezing temperature of the solution,
is the freezing temperature of the pure solvent (0 °C since it is water),
the Van't Hoff factor (1 since the solute is covalent),
the solvent's freezing point depression point constant (in this case
) and
the molality of the glucose.
As long as the unknown is , solving for it:
Best regards.
KCO₂
K₂C₂O₄
Explanation:
Given parameters:
Percent composition:
K = 47%
C = 14.5%
O = 38.5%
Molar mass of compound = 166.22g/mol
Unknown:
Empirical formula of compound = ?
Molecular formula of compound = ?
Solution:
The empirical formula of a compound is its simplest formula. Here is how to solve for it:
K C O
Percent
composition 47 14.5 38.5
Molar mass 39 12 16
Number
of moles 47/39 14.5/12 38.5/16
moles 1.205 1.208 2.4
Dividing
by smallest 1.205/1.205 1.208/1.205 2.4/1.205
1 1 2
Empirical formula KCO₂
Molecular formula
This is the actual combination of the atoms:
Molecular formula = ( empirical formula of KCO₂)ₙ
Molar mass of empirical formula = 39 + 12 + 2(16) = 83g/mol
n factor =
n factor = = 2
Molecular formula of compound = ( KCO₂)₂ = K₂C₂O₄
Learn more:
Empirical formula brainly.com/question/2790794
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