A change in the Earth's magnetic<span> field resulting in the </span>magnetic<span> north being aligned with the geographic south, and the </span>magnetic<span> south being aligned with the geographic north. Also called </span>geomagnetic reversal<span>.</span>
Answer:
(i) Electric Wires - Tin
(ii) Ornaments - Gold
(iii) Filament of bulb - Tungsten
(iv) Silvery Foil over sweets - Silver
(v) Foils to wrap food - aluminum
(vi) Pipes to supply water - Plastic or PVC pipes
Answer:
B. Refraction
Explanation:
The angle of incidence equals the angle of refraction.
Answer:
2Al (s) + 6HCl (aq) → 2 AlCl3 (aq) + 3H2 (g)↑
Explanation:
- We can put an up arrow to H2 cause as it is a gas, it can be released to the atmosphere.
- Aluminum as metal must be solid.
- As we have two solutions, both are aqueous phase.
- The stoichiometry must match on both sides of the reaction to have the same amount of elements of each compound.}
Reactants : 2 Aluminun
6 Hydrogen
6 Chloride
Products:
2 Aluminun
2.3 = 6 Chloride
3.2 = 6 Hydrogen
