A 44.5 liter gas cylinder is filled with oxygen gas (O2) at a pressure of 2.00 atm and temperature of 25.00 Celsius.  Calculate the mass (in grams) of oxygen gas in the cylinder under these conditions (Molar mass of oxygen = 16.00 grams/mol; R = 0.08206 (L x atm)/(mol x K); conversion of Celsius to Kelvin: C + 273.15 = K)  — [HINTS: PV=nRT; Did your units cancel to give the requested unit?]

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

Would you expect the following compound to be polar?

50.0 grams of arsenic powder is mixed with 50.0 grams of oxygen gas.  Given the following balanced equation, how many grams of arsenic 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?]  

Categorize the following reactions based on their reactants and/or products. Reaction 1: HCl + NaOH → H2O + NaCl Reaction 2: CH4 + 2O2 → 2H2O + CO2 Reaction 3: NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq)

In the interest of enhanced buffering capacity, what is the best way to prepare an acidic buffer? [HINT: Read the each question in its entirety]

A patient was asked to consume 250.00 mL of a 0.500% (m/v) KCl solution.  How many grams of potassium (K) did the patient consume?

Rheumatoid factor (RF) is an IgG antibody directed against IgM. 

The Western blot test tests patient serum against:

Tertiary syphilis is best evaluated by using