Answer:
The transition elements have their valence electrons in two different sets of orbitals that are (n-1)d and ns. Thus, transition elements show variable valencies due to the involvement of penultimate d shell electrons.
Explanation:
Vacuole - Stores Nutrients and Water.
Nucleolus - Where Ribosomes are made.
Chloroplasts - allows plant cells to trap light energy.
Cell Membrane - Controls which substances enter or exit a cell.
Cell Wall - Provides strength and Support for plant cells.
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<span> Hydrofluoric acid is a powerful and dangerous acid. </span>
Answer:
Aerosol cans carry warnings on their labels that say not to incinerate (burn) them or store the cans above a certain temperature. This problem will sho why it is dangerous to dispose of aerosol cans in a fire. The sa in a used aerosol can is at a pressure of 103 kPa at 25℃.
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