For this question, answer it on your work paper. In the box below, type “complete” when finished. Make sure to show all of your work.   Problem: Let’s analyze a titration that involves a bottle of sulfuric acid with an unknown concentration. You titrate a 85.00 mL sample of this solution with 3.550 M sodium hydroxide. It takes 67.50 mL of the sodium hydroxide to reach the endpoint. What is the concentration (in molarity) of the sulfuric acid in the bottle? Given:  

A 38-year-old woman is evaluated for 6 months of progressive dyspnea on exertion, orthopnea and 2+ pitting edema in both extremities.  She reports occasional “crushing-type” chest pain.  Past medical history is unremarkable.  She does not smoke cigarettes and rarely drinks alcohol.  There is no family history of heart disease. On physical examination she is afebrile.  Blood pressure is 140/90 mm Hg, pulse is 80 /min, and respiratory rate is 14/min.  Chest pain is not reproducible by palpation.  Crackles and rales are heard upon lung auscultation.  An S3 heart sound is easily appreciated by auscultation, and jugular venous distension is observed.  ECG shows sinus tachycardia and moderate left ventricular hypertrophy. 24. Which of the following findings will most likely be observed on this patient’s chest x-ray?

Which compound below would produce a gas when reacted with an acid?

Ethanol, C2H6O, can be synthesized in a two-step process from acetylene, C2H2.  Given the reactions with percent yields below, how many grams of ethanol can be produced from 5.00 g of acetylene? C2H2 (g)  +  H2 (g)  

A 75.00 mL sample of 0.1250 M sodium carbonate is reacted with 125.00 mL of 0.0845 M calcium chloride.  What is the mass of solid calcium carbonate produced? Na2CO3 (aq)   +  CaCl2 (aq) 

1pt – Parasympathetic effects are localized and short-lived because

23. In patients with heart failure secondary to myocardial infarction, which of the following drugs has not been shown to reduce mortality in randomized controlled trials?

Under which conditions might a qualitative research approach be more useful than a quantitative approach?

What mass of carbon dioxide would be released from the complete combustion of 1.00 gal of propanol, C3H8O?  The density of propanol is 0.810 g/mL.

What do cellulose and lignin fibers do in the body?