Answer:
Carbonates (CO3-2), phosphates (PO4-3) and sulfides (S-2) are insoluble.
The exceptions are the alkali metals and the ammonium ion.
Answer:
E to F
Explanation:
We know that v = dx/dt
and a = d²x/dt²
Decreasing velocity means deceleration or negative acceleration,
therefore d²x/dt²<0
i.e the portion where the graph is having its curvature downwards like an inverted u, from graph E to F portion looks like that.
Therefore in the portion E to F velocity decreases.
Answer:
D
Explanation:
It is letter D because the temperature at which the rock melts directly depends on the density of the rock
Answer:
unchanged
Explanation:
In any chemical of physical process, energy is neither created nor destroyed. A process that absorbs the heat from the surroundings. ... What happens to the energy of the universe during a chemical or physical process? During any chemical or physical process, the energy of the universe remains unchanged.
