Your answer would be a change in odor! Hope this helps! ;D
Your question has been heard loud and clear.
Both scientific laws and scientific theories are not based on hypothesis.
Because , scientific laws are proven and so they are real not hypothetical.
Whereas scientifc theories can be hypothetical.
Thank you
Answer:
B. calcium has electrons in more energy levels than magnesium
Explanation:
atoms are made of three types of subatomic particles - electrons, protons and neutrons.
Neutrons and protons reside in the nucleus of the atom and electrons reside in energy shells
electronic configuration for both Ca and Mg are as follows
Mg - 2,8,2
Ca - 2,8,8,2
outermost energy shell of Mg with electrons is the third energy level
whereas outermost energy shell of Ca with electrons is the fourth energy shell
therefore Ca has a larger atomic radius than Mg as it has one more energy shell than Mg in which electrons reside
Answer:
![\large \boxed{5.5 \times 10^{22}\text{ molecules of P$_{2}$O}_{5}}](https://tex.z-dn.net/?f=%5Clarge%20%5Cboxed%7B5.5%20%5Ctimes%2010%5E%7B22%7D%5Ctext%7B%20molecules%20of%20P%24_%7B2%7D%24O%7D_%7B5%7D%7D)
Explanation:
You must calculate the moles of P₄O₁₀, convert to moles of P₂O₅, then convert to molecules of P₂O₅.
1. Moles of P₄O₁₀
![\text{Moles of P$_{4}$O}_{10} = \text{13 g P$_{4}$O}_{10} \times \dfrac{\text{1 mol P$_{4}$O}_{10}}{\text{283.89 g P$_{4}$O}_{10}} = \text{0.0458 mol P$_{4}$O}_{10}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20P%24_%7B4%7D%24O%7D_%7B10%7D%20%3D%20%5Ctext%7B13%20g%20P%24_%7B4%7D%24O%7D_%7B10%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B1%20mol%20P%24_%7B4%7D%24O%7D_%7B10%7D%7D%7B%5Ctext%7B283.89%20g%20P%24_%7B4%7D%24O%7D_%7B10%7D%7D%20%3D%20%5Ctext%7B0.0458%20mol%20P%24_%7B4%7D%24O%7D_%7B10%7D)
2. Moles of P₂O₅
P₄O₁₀ ⟶ 2P₂O₅
The molar ratio is 2 mol P₂O₅:1 mol P₄O₁₀
3. Molecules of P₂O₅
![\text{No. of molecules} = \text{0.0916 mol P$_{2}$O}_{5} \times \dfrac{6.022 \times 10^{23}\text{ molecules P$_{2}$O}_{5}}{\text{1 mol P$_{2}$O}_{5}}\\\\= \mathbf{5.5 \times 10^{22}}\textbf{ molecules P$_{2}$O}_{5}\\\text{There are $\large \boxed{\mathbf{5.5 \times 10^{22}}\textbf{ molecules of P$_{2}$O}_{5}}$}](https://tex.z-dn.net/?f=%5Ctext%7BNo.%20of%20molecules%7D%20%3D%20%5Ctext%7B0.0916%20mol%20P%24_%7B2%7D%24O%7D_%7B5%7D%20%5Ctimes%20%5Cdfrac%7B6.022%20%5Ctimes%2010%5E%7B23%7D%5Ctext%7B%20molecules%20P%24_%7B2%7D%24O%7D_%7B5%7D%7D%7B%5Ctext%7B1%20mol%20P%24_%7B2%7D%24O%7D_%7B5%7D%7D%5C%5C%5C%5C%3D%20%5Cmathbf%7B5.5%20%5Ctimes%2010%5E%7B22%7D%7D%5Ctextbf%7B%20molecules%20P%24_%7B2%7D%24O%7D_%7B5%7D%5C%5C%5Ctext%7BThere%20are%20%24%5Clarge%20%5Cboxed%7B%5Cmathbf%7B5.5%20%5Ctimes%2010%5E%7B22%7D%7D%5Ctextbf%7B%20molecules%20of%20P%24_%7B2%7D%24O%7D_%7B5%7D%7D%24%7D)