31 and 32 please. I keep trying to figure it out but I just can\'t get it. treat

Question

31 and 32 please. I keep trying to figure it out but I just can't get it. treated by injection of a calcium chloride solution lz solution is administered 26 Cardiac arrest victims are sometimes directly into the heart muscle. to a patient, what mass of CaC, was provided A) 1.0 mg B010 C 10 mg D 10. If 2.0 mL of a 5 0% (mwoc D25g 27. Two solutions, A and B, are separated by a semipermeable membrane. A is 0.30 M NaNO and B is 0.20 M NaSO. What statement is correct A) There is a net flow of water from A to B B) There is a net flow of water from B to A C) There is no net flow D) There is not emough information given to determine what happens 28. Predict molecular shape and give the approximate bond angels of co-polyatomie ion. A) lineur, 1s B) trigonal planar, 120 C) tetrahedral, 109.5 D) trigonal pyramidal, 109.5 E) bent, 120 29. Predict the bond angles of the HeS molecule A) 1095 8)12 109.5 D 120 E)180 30.hold y-polarity ofthes, molecule A) linear, non polar Bi lincer, pola C) tetrahedral nonpola D) bent, nonpolar E) bent, polar 31. Which of the Sollowing bonds would be the most polar? 2 Which in the comect oqualibrium constant expressicn for the following reaction?

Explanation / Answer

Answer – 31) We know the polar bond is the form between two atoms due to the difference in electronegativity. The difference in electronegativity is more than 0.5 then that bond is polar bond. So as the difference increase polarity of bond increase. So we need to calculated the difference in electronegativity for each bond given

A) N-F = 3.98 -3.04 = 0.94

B) P-F = 3.98-2.19 = 1.79

C) S-Cl = 3.16 -2.58 = 0.58

D) Br-Br = 2.96 -2.96 = 0

E) F-F = 3.98 – 3.98 = 0

So the most polar bond is B) P-F

32) We are reaction –

Fe­2O3(s) + 3H2(g) <-----> 2Fe(s) + 3 H2O(g)

We know the equilibrium expression contain only the gases and aqueous phase.

It is the ratio of the product by reactant

So, K = [H2O(g)]3 / [H2(g)]3

So the correct answer is B)

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