Reptiles have a three-chambered heart consisting of the following:

In what group [grp] and period [per] of the periodic table would you find the element with the electron configuration [ Kr ]5s24d105p5?

How many σ bonds and how many π  bonds are present in the aspirin (the structure shown below)?     sigma _______[sigma] pi __________[pi] Enter number only. For example 0, 1, 2, 3..etc

Determine the cell notation for the redox reaction given below. 3 Br2(g) + 2 Fe(s) → 6 Br⁻(aq) + 2 Fe3+(aq)

Calculate the ΔG°rxn using the following information. 4 HNO3(g) + 5 N2H4(l) → 7 N2(g) + 12 H2O(l) ΔG°rxn = ? ΔH°f (kJ/mol) -133.9 50.6 -285.8 S°(J/mol∙K) 266.9 121.2 191.6 70.0  

Use the free energies of formation given below to calculate the equilibrium constant (K) for the following reaction at 298 K. 2 HNO3(aq) + NO(g) → 3 NO2(g) + H2O(l) K = ? ΔG°f (kJ/mol) -110.9 87.6 51.3 -237.1  

In a lead-acid storage battery, PbO2 is reduced to

Calculate ΔS°rxn for the following reaction. The S° for each species is shown below the reaction. C2H2(g) + H2(g) → C2H4(g) S°(J/mol∙K) 200.9 130.7 219.3  

The truth table below represents the following argument. Look at the truth table carefully, and answer the questions below. (pq)  r ~r ~q                    ~p     C1 C2 C3 C4 C5 C6 C7 C8   p q r ~q ~r pq (pq) r ~p R1 T T T F F T   F R2 T T   F T T F F R3 T F T T   F T F R4 T F F T T F T F R5 F T T F F T T T R6 F T F F T T F T R7 F F T T F T T T R8 F F F T T T F T What is the correct truth value for the missing value in C7, R1?

Refer back to the truth table in the question above that represents the following argument: (pq)  r ~r ~q                   ~p   Which rows represent the argument’s premise(s)?