Nitrous acid, HNO2, is a weak acid in water (pKa = 3.35). If an aqueous solution of nitrous acid with pH 2.69 is required, what concentration, in M, of the acid is needed? Enter your numerical answer to 4 decimal places and without units.

A chemical engineer is studying the following reaction: CH4(g) + 2H2S(g) → CS2(g) + 4H2(g) At the temperature the engineer picks, the equilibrium constant, Kp, for this reaction is 31. The engineer fills the reaction vessel with methane and hydrogen sulfide, and lets the reaction begin. He then measures the composition of the mixture inside each vessel from time to time. His first set of measurements show that there are 9.59 atm CH4, 6.70 atm H2S, 7.54 atm CS2, and 8.52 atm H2. Predict the changes in the compositions the engineer should expect next time he measures the compositions. Select all that apply.

Consider the equilibrium: CH4(g) + 2H2S(g) ⇌ CS2(g) + 4H2(g) In one experiment, 1.00 mol of CH4, 1.00 mol of CS2, 2.00 mol of H2S, and 2.00 mol on H2 are mixed in a 250-mL vessel at 960

The equilibrium constant, Kc, for the reaction PCl3(g) + Cl2(g) ⇌ PCl5 (g) is 49 at 230 ˚C. If 0.70 mol of PCl3 is added to 0.70 mol of Cl2 in a 1.00-L reaction vessel at 230 ˚C, what is the concentration, in mol/L, of PCl3 when equilibrium has been established? Enter a number, to 3 significant figures, and without units.

A combining form for “cartilage” is:

Select the correct definition of the word: hypertension

What does the transverse plane divide the body into?

When trying to create a new term, where should you start first?

What is another term for the median plane?

After surgery, a patient has an order for ketorolac 60 mg IVPB every 6 hours over 15 minutes.  The ketorolac is diluted in 25 mL of D5W.  The tubing drop factor is 15 gtt/mL.  How many drops per minute should be given?Do not provide the unit of measurement. Only provide the number. Round to the nearest whole number.