Chemistry, 24.09.2019 23:30 ziggyrules2002
Assume the shape of a helium balloon to be a sphere of radius, r, equal to 9 m, at standard sea level conditions. the volume, v, of a sphere is expressed as v = (4pi/3)r^3. note the molecular weight of he is mhe = 4 kg/kmol and for air, mair = 29 kg/kmol.
a. calculate the density of the helium, phe, inside balloon and the weight of the balloon, w,
assuming the material of the balloon is negligible.
b. calculate the balloon's buoyant force, fb.
c. what is the name of the principle by which the helium balloon derives its lift force?
Answers: 3
Another question on Chemistry
Chemistry, 22.06.2019 03:30
Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.
Answers: 1
Chemistry, 22.06.2019 17:50
You exhale co2 which is produced during cellular respiration. co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid. the more physical activity you engage in, the more co2 your body is producing. you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw. can you see a change in the color of the indicator?
Answers: 2
Chemistry, 22.06.2019 21:00
The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?
Answers: 1
You know the right answer?
Assume the shape of a helium balloon to be a sphere of radius, r, equal to 9 m, at standard sea leve...
Questions
Health, 29.10.2019 07:31
History, 29.10.2019 07:31
Mathematics, 29.10.2019 07:31
English, 29.10.2019 07:31
Physics, 29.10.2019 07:31
History, 29.10.2019 07:31
Mathematics, 29.10.2019 07:31
Social Studies, 29.10.2019 07:31
History, 29.10.2019 07:31
Biology, 29.10.2019 07:31
