Physics, 25.08.2019 17:50 tsmittens137
The helium used to fill birthday balloons doesn’t come out of the air, but from out of the ground. some of the gas might escape from the ground into the
atmosphere, but the majority of it is trapped in earth’s crust. based on what you have learned in today’s lab, give a reasonable explanation for the presence of helium gas in earth’s crust.
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