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Buffer

Buffer

Buffer How many grams of dry NH4Cl need to be added to 1.50 L of a 0.300 M solution of ammonia, NH3, to prepare a buffer solution that has a ph of 8.73? pkb for ammonia is 1.8X10^-5.

Henry’s Law?

Henry’s Law?

Henry’s Law? Determine the number of grams of oxygen dissolved in 500 mL of water at 25 C if the pressure of oxygen above the water is 0.21 atm. For O2 at 25 C, Kh=1.3 x 10^-3 M/atm. Please Explain!

need to do only question no. 3 using R- software. deadline : 28th may

need to do only question no. 3 using R- software. deadline : 28th may

need to do only question no. 3 using R- software. deadline : 28th may STATS 320 Assignment 4 Due: 2pm, Thu 4 Jun 2015 1. [12 marks] Visitors arrive at a security checkpoint according to a Poisson process of rate 2 per minute. There is only one security guard at service and the individual service […]

Precipitaion reactions

Precipitaion reactions

Precipitaion reactions For each of the following precipitation reactions, complete and balance the equation, indicating clearly which product is the precipitate. If no reaction would be expected, so indicate. (Include states of matter under the given reaction conditions in your answer. (a) (NH4)2SO4(aq) + Ba(NO3)2(aq) ?

Business Development:

Business Development:

Business Development: Interacting with Clients Submission details     Candidate’s name Assessor’s name Assessment site Assessment date/s Time/s This Assessment Task is due on the date specified by your assessor. Any variations to this arrangement must be approved in writing by your assessor. Submit this document with any required evidence attached. See specifications below for […]

net ionic equation

net ionic equation

net ionic equation What is the net ionic equation for na2so3 with nh4Cl? I can do this reaction using naso3, but the extra sodium is tripping me up. Thanks for the help.