![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 23:30
Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 00:00
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 12:00
Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 14:10
Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?
Answers: 1
You know the right answer?
Which type of rection has the general formuial ab+cd...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 09.12.2021 09:30
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30
![question](/tpl/images/cats/mat.png)
Mathematics, 09.12.2021 09:30