![subject](/tpl/images/cats/himiya.png)
Archimedes tells us the lifting power of a balloon (how much mass it can lift) is equal to the difference between the mass of the balloon and the mass of the air it displaces. That is, if the balloon occupies the same volume as 10kg of air, but the balloon only weighs 2kg, then the balloon can lift 8kg.
Airships have sometimes been filled with hydrogen (H2), but hydrogen is very flammable, and after the Hindenburg caught fire and crashed in 1937 with serious loss of life airships have nearly always been filled with helium (He) instead.
Suppose a new airship Star of Balogna will have the shape of a cylinder 100m long, with a radius of 15.0m, and will weigh 905.kg without any gas inside it. Suppose also the average passenger weighs 82kg. Calculate how many passengers the Balogna could carry if it were filled with hydrogen, and also if it were filled with helium.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 10:00
How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 12:00
What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 12:00
Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 15:00
βwhich reaction would most likely require the use of an inert electrode?
Answers: 1
You know the right answer?
Archimedes tells us the lifting power of a balloon (how much mass it can lift) is equal to the diffe...
Questions
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 12.03.2020 06:17
![question](/tpl/images/cats/mat.png)
Mathematics, 12.03.2020 06:17
![question](/tpl/images/cats/istoriya.png)
History, 12.03.2020 06:17
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 12.03.2020 06:17
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 12.03.2020 06:17
![question](/tpl/images/cats/istoriya.png)
History, 12.03.2020 06:17
![question](/tpl/images/cats/himiya.png)
Chemistry, 12.03.2020 06:17