![subject](/tpl/images/cats/himiya.png)
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
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 18:30
Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o sncl2•4h2o sncl2•6h2o
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 01:00
Substance 33°f 100°f peanut oil solid liquid margarine solid liquid chocolate chips solid liquid which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 01:30
In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i
Answers: 1
You know the right answer?
A 1.538-g sample of baking soda, NaHCO3, decomposes with heat to give 0.833 g of sodium carbonate. W...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 06.10.2019 22:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.10.2019 22:40
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 06.10.2019 22:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.10.2019 22:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 06.10.2019 22:40
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 06.10.2019 22:40
![question](/tpl/images/cats/fizika.png)
Physics, 06.10.2019 22:40
![question](/tpl/images/cats/mat.png)
Mathematics, 06.10.2019 22:40
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 06.10.2019 22:40
![question](/tpl/images/cats/istoriya.png)
History, 06.10.2019 22:40