Answer:
Lead is added to warm dilute nitric acid. When the carbonate has reacted with the warm acid, more carbonate is added until the carbonate is in excess.
Explanation:
1. Change in color
2. Formation of bubbles
3. Formation of a precipitate
4. Begins to make an odor
Sapphire.
It is a stone not a metal.
Heat= mass * change in temperature* specific heat
specific heat=409 J/kg K
Answer:
In Greek it means sphaira or ball which can be related to the Earth,the atmosphere or biosphere.
