Use of an antitoxin to treat poisonous snakebite (venom) is an example of which type of immunity/

Which of the following describes the parenteral route of infection?

What is the pH of a 2.5 M solution of acetic acid at equilibrium? (Balanced eq: HC2H3O2(aq) + H2O(l) + ⇌ H3O+(aq) + C2H3O2−(aq);  Ka of HC2H3O2 is 1.8 × 10−5  Note, X is much smaller than original concentration, therefore you do NOT need to perform the quadratic equation. 

50.0 grams of arsenic powder is mixed with 50.0 grams of oxygen gas, as noted by the following balanced equation.  How many grams of diarsenic trioxide is produced?  (Molecular masses: Arsenic = 74.92 g/mol; Oxygen = 16.00; Diarsenic trioxide = 197.84 g/mol) Balanced Equation:  4As(s) + 3O2(g) –> 2As2O3(s)  

Which of the following chemical reactions (numbered 1 – 3) depict(s) the forward reaction of a weak acid? Reaction 1: HCl → H+ (aq) + Cl− (aq) Reaction 2: HC2H3O2 ⇌ H+ (aq) + C2H3O2− (aq) Reaction 3: NH3(aq) + H + (aq) ⇌ NH4 + (aq)

Which collision factor most directly benefits from heating a reaction mixture?

A lab assistance prepares 2.50 liters of a 0.5000 M KCl solution.  What mass of KCl was used to prepare this particular solution? (Molar masses of K = 39.098 g/mol, Cl = 35.45 g/mol)  —

In the interest of enhanced buffering capacity, what is the best way to prepare an acidic buffer?

Consider the function on R2 (R is the set of Real numbers) u(x,y)=min{x2y,xy}. What is the maximizer of f in the set {(x,y): x+5y=10}? (Hint: consider a vector in the hyperplane (1 5).(x,y)=10; when can this vector be a maximizer of u if x2y>xy? What if x2y

Given a function g:X->R (R is the set of Real numbers), the binary relation associated with g, is defined as follows: {(x,y):g(x) ≥ g(y)}. Let f:R->R be the function f(x)=x2. Which of the following functions has the same associated binary relation as f?