Chemistry, asked by dasnemai1973, 10 months ago

find the number and mass of neutrons in 32 gram of oxygen at STP (mass of neutron equal to 1.675 into 10 to the power minus 27 kilogram)​

Answers

Answered by pmvjs299
2

Answer:

Total number of neutrons in 32 gram of O₂ = 9.6368 × 10²⁴

Total mass of neutrons in 32 gram of O₂ = 16.14164 gram

Explanation:

32 gram of O₂ = 1 mole of O₂

1 mole of O₂ contains 2 moles of oxygen ( O ) atoms

1 mole = 6.023 × 10²³

2 moles of oxygen atoms = 12.046 × 10²³ oxygen atoms.

Each oxygen atom contains 8 neutrons.

so total neutrons in 32 gram of O₂ = 8 × 12.046 × 10²³

                                                          = 9.6368 × 10²⁴ neutrons.

total mass of neutrons = 1.675 × 10⁻²⁷ × 9.6368 × 10²⁴ Kg .

                                      = 1.614164 × 10⁻² Kg

                                      = 16.14164 gram

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