Chemistry Homework Solutions
Problem
#84540

Problem set concerning valences

1   For each of the molecules listed below give the following information for the underlined atom. 1. Valence bond hybrid orbital 2. Shap of the structural pairs (valence bonding orbitals) 3. Shape of the molecule

A. H2O
1
2
3

B: SiH4
1
2
3

C: CH2O
1
2
3


2   Concentrated phosphoric acid (H3PO4) solution is a 85.0% by mass solution in water and has a density of 1.689g/cm3.
a. Molality of Phosphoric Acid.
b. Molarity of phosphoric Acid
C. Mole fraction of both components



3   The molar mass of hemoglobin can be determined using osmotic pressure. 200.0 ml of solution contains 3.27 g of hemoglobin and produces an osmotic pressure of 4.60 mm Hg at 20 degress C . What is the molar mass of hemoglobin?

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