What is the chemical oxygen demand
A 25.0 mL sample of river water was titrated with 0.0010 M Na2Cr2O7 and required 8.3 mL to reach the end-point. What is the chemical oxygen demand, in milligrams of O2 per liter, of the sample?
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If gasoline is selling for $3.20/gal, what would the price of ethanol have to be in order to provide the same amount of heat per dollar? The density and delta H defrees F o octane are 0.7025 g/ml and -249.9 kJ/mol and of ethanol are 0.7894 and -27
A sample of neon has a volume of 610 mL when it is at a pressure of 867 mmHg. What will be the volume when the pressure is increased to 1760 mmHg.
Compute the change in temperature when 1.8 g of sodium chloride is dissolved in 300.0 mL of water initially at 20C. The heat capacity of water is 4.184 J/mL/K. Neglect the heat capacity of the NaCl.
Given that is the central atom, draw a Lewis structure of in which the formal charges of all atoms are zero. Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
Assignment must be original, fresh work in APA format w/3-4 reerences will pAY$15 You are a manager in a fictitious company of your choice. Your director has asked you to explain to the department staff the different types of budgets and techniques
What is the freezing point of a solution of sodium chloride that contains 97.0 g NaCl dissolved in 545 g of water? Use molar masses with at least as many significant figures as the data given.
One of the most important enzymes in the world is nitrgoenase, the plant protein that catalyzes nitrogen fixation. The enzyme contains active clusters of iron, sulfur, and molybdenum atoms. Crystalline molybdenum (Mo) has a body-centered cubic uni
In a reaction between pure acetic acid and sodium bicarbonate, 11.2 grams of sodium bicarbonate was added to 21.0 mL of acetic acid. How many moles of carbon dioxide do you expect to be produced?
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Develop a presentation on the socialization process and personality.
How is it determined that a sexual behavior may be due to a psychological disorder or sexual dysfunction?
Assignment Task: What is the importance of a literature review and what should you avoid when conducting a literature review?
List five potential asthma triggers. Discuss what schools and families can do to reduce the incidence of asthma attacks.
Identify one example of an endoscopy procedure performed. Explain what type of symptoms a patient would experience in order to receive this procedure.
Identify an example of when an OB patient may not have the same provider for the antepartum, delivery, and postpartum services.
New technology and tools will undoubtedly shape nursing practice. "Research suggests that between 8% and 16% of nursing time is spent