Aballoon filled with helium gas has a volume of 500 ml at a pressure of 1 atm. the balloon is released and reaches an altitude of 6.5 km, where the pressure is 0.5 atm. if the temperature has remained the same, what volume does the gas occupy at this height?

Volume of the gas occupy at this height will be 1 L.

Explanation:

Volume of the balloon when pressure of helium gas was 1 atm :

= 500 mL = 0.5 L = (1000 mL= 1 L)

Volume of the balloon when the pressure of helium gas is 0.5 atm :

V=

According to Boyle's Law:

(At constant temperature)

Volume of the gas occupy at this height will be 1 L.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

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