Answer:
When an alkali metal hydroxide is added to an aqueous solution of cobalt (II) salt, Cobalt(II) hydroxide precipitates as a solid
Explanation:
When an alkali metal hydroxide is added to an aqueous solution of cobalt (II) salt, Cobalt(II) hydroxide precipitates as a solid . For example, 2 NaOH +Co²⁺ →2Na + Co(OH)₂
From the water ligands Hydrogen ion attached to the cobalt ion is removed by the hydroxide ions.
From two of the water molecules , a hydrogen ion has been removed , then the resultant is a complex with no charge i.e. a neutral complex.
One of the important property of cobalt (II) hydroxide are it is slightly soluble in water and it is insoluble in alkalis.
Answer:
2CH4 + 3O2 → 2CO + 4H2O
Explanation:
When methane is burnt in adequate supply of oxygen, then carbon dioxide is produced but when methane is burnt in limited supply of oxygen, then carbon mono-oxide is produced.
The balanced equation for the same is as follows -
2CH4 + 3O2 → 2CO + 4H2O
Answer:
Oceanic crust is not only thinner and denser than continental crust, and it is also much younger than it and has a different chemical composition. When magma from the mantle of the earth finds a way up, it comes into contact with water that cools it down quickly
Answer:
c. Energy from the liquid is exhausted into the atmosphere outside the freezer
Explanation:
Energy from the liquid is exhausted into the atmosphere outside the freezer.
a. is wrong. If the energy remained inside the freezer, the warm liquid would cool down and the inside of the freezer would warm up.
b. is wrong. The freezer removes energy from the liquid.
Answer:
2. Molten rock rises in Earth's mantle caused by (pressure)
Explanation:
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