Yes, they seem right to me.
Answer:
563712.04903 Pa
Explanation:
m = Mass of material = 3.3 kg
r = Radius of sphere = 1.25 m
v = Volume of balloon =
M = Molar mass of helium =
= Density of surrounding air =
R = Gas constant = 8.314 J/mol K
T = Temperature = 345 K
Weight of balloon + Weight of helium = Weight of air displaced
Mass of helium is 6.4356 kg
Moles of helium
Ideal gas law
The absolute pressure of the Helium gas is 563712.04903 Pa
Answer:
437.5Kjoules
Explanation:
K.E=half multiply by mass multiply by square of velocity
=437.5Kjoules