Answer:
Through their adaptations from their habitat; environment
Explanation:
Charles Darwin explains evolution and their genetic material evolves during the process. For example, fruit birds have narrow bills whilst seed-eating birds have big bills. The foods they eat forced their DNA to adapt with the system in order to survive.
Answer:
16.46 g.
Explanation:
- It is a stichiometry problem.
- We should write the balance equation of the mentioned chemical reaction:
<em>2Cu + Zn(NO₃)₂ → Zn + 2Cu(NO₃).</em>
- It is clear that 2.0 moles of Cu reacts with 1.0 mole of Zn(NO₃)₂ to produce 1.0 mole of Zn and 2.0 moles of Cu(NO₃).
- We need to calculate the number of moles of the reacted Cu (32.0 g) using the relation:
<em>n = mass / molar mass</em>
- The no. of moles of Cu = mass / atomic mass = (32.0 g) / (63.546 g/mol) = 0.503 mol.
<u><em>Using cross multiplication:</em></u>
2.0 moles of Cu produces → 1.0 mole of Zn, from the stichiometry.
0.503 mole of Cu produces → ??? mole of Zn.
- The no. of moles of Zn produced = (1.0 mol)(0.503 mol) / (2.0 mol) = 0.2517 mol.
∴ The grams of Zn produced = no. of moles x atomic mass of Zn = (0.2517 mol)(65.38 g/mol) = 16.46 g.
Answer : The electronic configuration of argon (Ar) is, ![1s^22s^22p^63s^23p^6](https://tex.z-dn.net/?f=1s%5E22s%5E22p%5E63s%5E23p%5E6)
Explanation :
Element is, Argon (Ar)
Atomic number of argon = 18
The number of electrons = 18
As we know that the number of electrons is equal to the number of protons and the number of proton is equal to the atomic number.
Electronic configuration : It is defined as the arrangement or distribution of electron of atom in a atomic orbital.
Hence, the electronic configuration of argon is,
![1s^22s^22p^63s^23p^6](https://tex.z-dn.net/?f=1s%5E22s%5E22p%5E63s%5E23p%5E6)
It is graphical representation of the solubity of a particular solute in a given solvent with respect to varying temperatures,generally,temperature is directly porportional to solubity,as temperature increases solubity increases.