Which of the following elements is not likely to form bonds? gold oxygen neon mercury
1 answer:
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Answer:
4.27 g
Explanation:
We can write that for a gas kept at constant pressure and temperature, the number of moles of the gas is directly proportional to its volume:
Which can be rewritten as
where here we have:
is the initial number of moles
is the initial volume of the gas
is the final volume of the gas
So the final number of moles is
So the number of moles that should be released from the balloon is:
The molar mass of gas N2 is
Therefore, the mass of gas that should be released is:
Answer:
The ratio of the temperature of helium to that of hydrogen gas is 2:1.
Explanation:
Atomic mass of hydrogen = M
Temperature of hydrogen gas =T
Pressure of the hydrogen gas = P
Mass of the hydrogen gas = m
Moles of the hydrogen gas =
Volume of the hydrogen gas = V
Using an ideal gas equation:
...(1)
Temperature of helium gas =T'
Pressure of the helium gas = P'= P
Mass of the helium gas = m' =m
Moles of the helium gas =
Volume of the helium gas = V' = V
Using an ideal gas equation:
...(2)
Divide (2) by (1)
The ratio of the temperature of helium to that of hydrogen gas is 2:1.