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English, 24.06.2019 16:50 610055470

John puts 1250 psi of oxygen, 780 psi of nitrogen and 550 psi of helium in a scuba tank. what is the total pressure?

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John puts 1250 psi of oxygen, 780 psi of nitrogen and 550 psi of helium in a scuba tank. what is the...
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