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The density of helium is 0.1784 kg//m^(3...

The density of helium is `0.1784 kg//m^(3)` at `STP`. If a given mass of helium at `STP` is allowed to expand to `1.400` times of its initial volume by changing `P` and `T`, compute its resultant density .

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The correct Answer is:
`0.1274kg//m^(3)`
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