![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 21:40
A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 23:00
What is the oxidation state of an individual bromine atom in nabro3?
Answers: 2
You know the right answer?
What is the ph of 0.50 M NH4Br...
Questions
![question](/tpl/images/cats/biologiya.png)
Biology, 25.03.2020 23:10
![question](/tpl/images/cats/biologiya.png)
Biology, 25.03.2020 23:10
![question](/tpl/images/cats/geografiya.png)
Geography, 25.03.2020 23:10
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2020 23:10
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2020 23:11
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2020 23:11
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 25.03.2020 23:11
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2020 23:11
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2020 23:11
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2020 23:12
![question](/tpl/images/cats/en.png)
English, 25.03.2020 23:12