A student failed to carry out all of the procedural steps when doing this experiment. Would the following procedural variation result in an experimentally determined molarity of NaOH that is higher,  lower, or no change? Briefly explain for one additional point in the Work and Calculations section. The student did not clean the buret before beginning the titration. After completing the titration, the student noticed that droplets of the titrant were clinging to the inside surface of the barrel.  

A 25.00 mL sample of the phosphoric acid solution was titrated with 35.42 mL of a 0.951 M solution of sodium hydroxide, NaOH. What is the molar concentration of acid?     Hint: write the balanced equation first To receive full credit (1 pt for answer and 1 pt for showing work), submit a picture of your work to the Exam 4 Solutions, Extra Credit and Partial Credit assignment AFTER SUBMITTING COMPLETED Midterm

Round 2.54467L to three sig sigs  

How much heat in kJ, is liberated at constant pressure if  50.0 mL of 1.5985 M hydrochloric acid reacts with excess base? KOH(aq) + HCl(aq)  =>  KCl(aq) + H2O(l) ; ΔH° = –56.9 kJ Show work for Partial Credit in the Work and Calculations assignment provided.

The F-N-F bond angle in the NF3 molecule is slightly less than ______          Hint: build the Lewis dot structure to answer this question.    

20. En un territorio urbano, personas mayores de varios barrios utilizan una red de espacios comunitarios y servicios, pero presentan dificultades diferentes de acceso según horarios, distancias y disponibilidad de transporte. Existen organizaciones con experiencia en acompañamiento y actividades comunitarias. Los actores acuerdan como prioridad fortalecer la autonomía cotidiana y las redes territoriales de apoyo. El municipio dispone de recursos para habilitar un nuevo centro comunal junto a una vía de transporte principal. ¿Cómo podría incorporarse este nuevo centro a una propuesta de intervención situada sin dejar de considerar las características y capacidades del territorio?

How many grams of iron are in 350. µg of iron?  

Light is passed through a solution with a light path of 1 cm and the absorbance is recorded as 0.40. If the light passed through the same solution at the same wavelength and the light path is reduced to 2 cm, the absorbance should be:

The F-B-F bond angle in the BF3 molecule is _______  Hint: build the Lewis dot structure to answer this question.

The electron-domain geometry of the central atom in SeO2 is ________. To answer this question,  build the Lewis dot structure and upload the picture to Midterm Exam Required Work & Partial Credit assignment after submitting this exam for one additional point.