Answer: 1 = 1e-5
Explanation: Divide the pressure value by 100000
Oxygen gas enters water through Diffusion (movement of gas from higher concentration to lower concentration). The amount of oxygen in water depends on many factors. Like at Higher temperature there will be less amount of Oxygen in water and vice versa. And it is found that at 0 °C, 14.6 mg/L and at 20 °C, 7.6 mg/L dissolves.
The interactions between Water Molecule and Oxygen Molecule are London Dispersion Forces. The polar water molecule induces the polarity in oxygen molecule. In this way the oxygen gas is available in water.
Answer: Physical change: It is reversible process and we can get back to orginal material. Best example is the interconversion of ice into water which inturn into vapour.
Chemical changes are irreversible and we can't get back the original material. Example combustion of coal, rusting of iron
Explanation:
1. Electrolysis of molten MgCl2 is chemical change since we can't get back MgCl2 after Electrolysis and new materials are formed.
2. It is an example rusting of iron comes under chemical changes.
Answer:
A: Cellulose
Explanation:
Cellulose in paper and tree
Answer:
Ionic bond
Explanation:
An ionic bond holds positive and negative ions together.