A helium airship has a gasbag of volume 10000 m3 at sea level (1.00 bar) and at 20°C. At higher altitudes, the air pressure falls at a rate of 0.10 bar for every 1000 m increase in altitude.
a) What will the volume of the gasbag be at a height of 1500 m, when the pilot's thermometer registers a temperature of 5°C?
b) The airship rises through the atmosphere until the volume of its gasbag is 10500 m3. The temperature is 0°C.
i- What is the pressure indicated by the pilot's
barometer?
ii- Calculate the height of the airship.

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

What does an electron configuration for an atom relate to the atoms placement on the periodic table