![subject](/tpl/images/cats/himiya.png)
Chemistry, 02.03.2022 21:00 taythestargazer71
What volume of 0.50 M H2SO4 must be added to 65 ml of 0.20 M H2SO4 to give a final solution of 0.35 M? Assume volumes are additive
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 18:30
Which orbitals form a pi bond? a.the s orbital and three p orbitals b.the s orbital and two p orbitals c.overlapping p orbitals d.overlapping hybrid orbitals
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 05:30
A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 10:40
Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 16:30
How many grams of mgbr2 are needed to produce 75g or metal?
Answers: 1
You know the right answer?
What volume of 0.50 M H2SO4 must be added to 65 ml of 0.20 M H2SO4 to give a final solution of 0.35...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2020 23:34
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2020 23:35
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2020 23:35
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 22.03.2020 23:35
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2020 23:35
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2020 23:36
![question](/tpl/images/cats/mat.png)
Mathematics, 22.03.2020 23:36