Use of an antitoxin to treat poisonous snakebite (venom) is an example of which type of immunity/
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Which of the following describes the parenteral route of inf…
Which of the following describes the parenteral route of infection?
What is the pH of a 2.5 M solution of acetic acid at equilib…
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. [Hint: What is the definition of pH?]
50.0 grams of arsenic powder is mixed with 50.0 grams of oxy…
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) [HINT: How many equations are required to determine the answer?]
Which of the following chemical reactions (numbered 1 – 3) d…
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) [Hint: Firstly, how do you identify a compound as an acid?]
Which collision factor most directly benefits from heating a…
Which collision factor most directly benefits from heating a reaction mixture?
A lab assistance prepares 2.50 liters of a 0.5000 M KCl solu…
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) — [HINT: What units can you use to “M”?]
In the interest of enhanced buffering capacity, what is the…
In the interest of enhanced buffering capacity, what is the best way to prepare an acidic buffer? [HINT: Read the each answer in its entirety]
Consider the function on R2 (R is the set of Real numbers) u…
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…
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?