It has a negative charge emits energy when it moves to a lower energy orbit from an excited state and it has the same mass as a proton
3 subatomic particles in the nucleus
which is proton(24),neutron (28) and electrons(24)
D: they have new dna combinations
Answer: 2 mol
Explanation:
- According to the ideal gas law, One mole of an ideal gas at STP (standard temperature and normal pressure) occupies 22.4 liters.
- Using cross multiplication,
1 mol of (O2) → 22.4 L
? → 43.9 L
Therefore, the number of moles of oxygen in 43.9 L = (43.9 × 1)/ 22.4 = 1.96 mol≈ 2 mol..
