What is the ph of a phosphate buffer
What is the pH of a phosphate buffer when [h2po4-1]=40mM and [hpo4-2]=3omM? assume the pKa for this titration is 7.2
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A 6.0-g sample of [Ni(H2O)6]Cl2 is dissolved in aqueous solution. If an excess of ethylenediamine (en) is added to the solution, solid [Ni(en)3]Cl22H2O forms. What is the theoretical yield of product from the reaction?
The gas ammonia can be decomposed to give 3.00 parts by mass of hydrogen and 14.0 parts by mass of nitrogen. What mass of nitrogen is obtained if 1.27 g of ammonia is decomposed?\
How many grams of hydrogen are necessary to react comletely with 50.0 g of nitrogen in the following reaction: N2+3H2 = 2NH3?
How many joules of energy are necessary to heat the steam from 100.0 degrees Celcius to 114.0 degrees celcius if the specific heat of steam 2.01J/g degrees celcius.
What external pressures have moved mainstream medicine to accept alternative therapies? Have any alternative therapies been proven to work as well as standard treatments?
Mr Burns wants to retire at age 100. Once he retires he wants to withdraw $1.2 billion at the beginning of each year for 8 years from an offshore account that will pay 23% annually. In order to fund his retirement, he will make 25 equal end of yea
Calculate the Ksp of lead iodide from the following standard electrode potentials, at 25 C oxidative -.126 redox -.365
An aqueous solution is prepared by diluting 3.30mL acetone, CH3COH3, (d= 0.789g/mL) with water to a final volumeof 75.0 mL. The density of the solution is 0.993 g/mL. what are the molarity and the molality of acetone in this solution?
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Consider what you learned this week about the significance of nonverbal communication. Tell us about a time when your nonverbal cues were inconsistent
Did you feel prepared for this speech? How much time did you spend preparing for this speech? How many practice runs did you do?
1. Explain the impact of User Stories. How are good user stories written? What does a good user story look like?
You will write a comparison-contrast paragraph. You may choose any comparison-contrast approach related to persons, places, or things.
You are required to write a descriptive paragraph for this assignment. You may choose any person you have known personally or any place that was important
Begin by reading aloud/ listening to "I Hear America Singing" by Walt Whitman. Write your thought about the Whitman poem.
Choose your all-time favorite movie and write a short argument persuading the reader (your instructor) to watch the movie.