![subject](/tpl/images/cats/himiya.png)
Chemistry, 24.07.2021 19:40 maggiegoodenough62
If a 520 mg sample of technetium-99 is used for diagnostic procedure, how much of Tc-99 remains after 30.0h? Half life of Tc-99 is 6.0 hours.
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:00
Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:00
24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 23:00
The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be:
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 00:50
The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as
Answers: 3
You know the right answer?
If a 520 mg sample of technetium-99 is used for diagnostic procedure, how much of Tc-99 remains afte...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
Arts, 23.04.2020 05:59
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fr.png)
French, 23.04.2020 05:59
![question](/tpl/images/cats/mat.png)
Mathematics, 23.04.2020 05:59
![question](/tpl/images/cats/mat.png)
Mathematics, 23.04.2020 05:59
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.04.2020 05:59
![question](/tpl/images/cats/mat.png)
Mathematics, 23.04.2020 05:59
![question](/tpl/images/cats/es.png)
Spanish, 23.04.2020 05:59
![question](/tpl/images/cats/mat.png)
Mathematics, 23.04.2020 05:59
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 23.04.2020 05:59
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 23.04.2020 05:59
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.04.2020 05:59
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 23.04.2020 05:59