![subject](/tpl/images/cats/himiya.png)
Chemistry, 03.12.2020 17:00 laquiataylor948
Consider a 0.10 M solution of a weak polyprotic acid (H2A) with the possible values of Ka1 and Ka2 given below. Calculate the contributions to [H3O+] from each ionization step. Ka1=1.0×10−4;Ka2=5.0×10−5
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 16:30
Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 21:30
It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:00
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 09:00
The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles
Answers: 1
You know the right answer?
Consider a 0.10 M solution of a weak polyprotic acid (H2A) with the possible values of Ka1 and Ka2 g...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2019 19:50
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2019 20:00
![question](/tpl/images/cats/geografiya.png)
Geography, 18.10.2019 20:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
History, 18.10.2019 20:00
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2019 20:00
![question](/tpl/images/cats/himiya.png)
Chemistry, 18.10.2019 20:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2019 20:00
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2019 20:00
![question](/tpl/images/cats/en.png)
English, 18.10.2019 20:00
![question](/tpl/images/cats/istoriya.png)
History, 18.10.2019 20:00
![question](/tpl/images/cats/istoriya.png)
History, 18.10.2019 20:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 18.10.2019 20:00