Chemistry, 27.03.2021 06:50 mdaniella522
Plsss help
We mix 3.0•10^-2 mol of HNO2 with 5.0•10^-2 mol of NaNO2 and we add enough water to have 2.0L.
a) whats the pH of the solution
b) whats the reactions equation when we add HCl
Answers: 1
Chemistry, 21.06.2019 22:30, larreanathalie3523
The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.
Answers: 2
Chemistry, 22.06.2019 16:50, TrueKing184
Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
Answers: 1
Plsss help
We mix 3.0•10^-2 mol of HNO2 with 5.0•10^-2 mol of NaNO2 and we add enough water to have...
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