I\'m finding 31 and 32 impossible. Plz help Cardiac arrest victims are sometimes

Question

I'm finding 31 and 32 impossible. Plz help Cardiac arrest victims are sometimes treated by injection of a calcium chloride solution directly into the heart muscle. If 2.0 mL of a 5.0% (m/V) CaCl_2 solution is administered to a patient, what mass of CaCl_2 was provided? Two solutions, A and B, are separated by a semipermeable membrane. A is 0.30 M NaNO_3 and AB is 0.20 M Na_2SO_4. What statement is correct? Predict the molecular shape and give the approximate bond angels of CO_3^2- polyatomic ion. Predict the bond angles of the H_2S molecule. Predict the geometry and polarity of the CS_2 molecule. Which of the following bonds would be the most polar? Which is the correct equilibrium constant expression for the following reaction?

Explanation / Answer

31 ) answer :   B) P-F

explanation:

(options D , E) Br- Br and F -F are perfect covalent . so not polar

(options A , B) next N more electronegative than P . so the bond between P and F is more polar.

(options C) S 6th group and F 7th group so there is less polarity

32)   answer : B) Keq = [H2O]^3 / [H2]^3

Keq = [H2O]^3 / [H2]^3

explanation :

Keq = [products] / [reactant]

in the equilibrium expression solids and pure liquids are not involved

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