the density of a black hole is 22.61 g/cm3 i think
MgH2 + 2 H2O → Mg(OH)2 + 2 H2
Nuclear fossion hope this helps
Since we are told that 1L of air contains 0.21L of oxygen, you can use the conversion (0.21L O₂)/(1L air). That means that you can just multiply 6.0L by 0.21L to get 1.26L of O₂.
that means that the lungs can hold about 1.26L of oxygen.
I hope this helps. Let me know if anything is unclear.
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