The condition caused by nitrogen gas bubbles dissolving in the blood is termed "Bends."
Also known as decompression sickness, this arises when a diver ascends too rapidly from significant depths. High pressure forces more nitrogen into bodily fluids. A swift ascent reduces pressure, causing nitrogen to form bubbles in blood and tissues, resulting in joint pain, dizziness, and potentially severe issues if untreated.
| Condition | Description |
|---|---|
| Anoxia | Tissue oxygen deprivation. |
| Red fever | Fictional; irrelevant. |
| Sleeping sickness | Tsetse fly transmitted; unrelated to diving. |
| Bends | Nitrogen bubbles in blood. |
The correct answer is "Bends," signifying the condition of dissolved nitrogen forming bubbles due to rapid pressure changes.
(Zn + 4HNO_3 Zn(NO_3)_2 + 2H_2O + 2NO_2)
32.5 g of zinc reacts with concentrated nitric acid as given in the above equation.
(a) How many moles of zinc was required in the reaction?
(b) Find the mass of nitric acid needed to react with 32.5 g of zinc.
(c) Find the volume of nitrogen dioxide liberated in (b).
(Atomic weight: H = 1, N = 14, O = 16, Zn = 65)