Hi Steve,
I'm doing some revision over the holidays, could you check some of my questions?
1. A salt MX3 has a Ksp value of 8.47E-15. What is the millimolar(mM) concentration of X- in a saturated solution of this salt?
I got 42.085mM
2. Co(g) + H2)(g) <==> CO2(g) + H2(g)
occurs in an ideal mixture of ideal gases. At 700K, Kp=5.10. At this temperature, calculate deltaG in kJ.
I got 9.48kJ
3. 8.9 of a high molecular weight biological compound is dissoved in water to make 500mL of solution. The resulting solution developed an osmotic pressure of 0.044atm at 25C. What is the molecular weight of the compound?
I got 2472.977
I'm don't know how to do this question:
The density of a 14.1M CH3OH solution is 0.858 g/mL. What is the molality of this solution? H2O is the solvent.
Thank you very much |
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