Iodine..............................
Answers:
A) 2040 kg/m³; B) 58 600 km
Explanation:
A) Density
![V = \frac{ 4}{3 }\pi r^{3} = \frac{ 4}{3 }\pi\times (\text{1150 km})^{3} = 6.37 \times 10^{9} \text{ km}^{3}](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B%204%7D%7B3%20%7D%5Cpi%20r%5E%7B3%7D%20%3D%20%5Cfrac%7B%204%7D%7B3%20%7D%5Cpi%5Ctimes%20%28%5Ctext%7B1150%20km%7D%29%5E%7B3%7D%20%3D%206.37%20%5Ctimes%2010%5E%7B9%7D%20%5Ctext%7B%20km%7D%5E%7B3%7D)
![\text{Density} = \frac{\text{mass}}{\text{volume}} = \frac{1.3\times 10^{22} \text{ kg} }{6.37 \times 10^{9} \text{ km}^{3}}\times (\frac{\text{1 km}}{\text{1000 m}})^{3} = \text{2040 kg/m}^{3}](https://tex.z-dn.net/?f=%5Ctext%7BDensity%7D%20%3D%20%5Cfrac%7B%5Ctext%7Bmass%7D%7D%7B%5Ctext%7Bvolume%7D%7D%20%3D%20%5Cfrac%7B1.3%5Ctimes%2010%5E%7B22%7D%20%5Ctext%7B%20kg%7D%20%7D%7B6.37%20%5Ctimes%2010%5E%7B9%7D%20%5Ctext%7B%20km%7D%5E%7B3%7D%7D%5Ctimes%20%28%5Cfrac%7B%5Ctext%7B1%20km%7D%7D%7B%5Ctext%7B1000%20m%7D%7D%29%5E%7B3%7D%20%3D%20%5Ctext%7B2040%20kg%2Fm%7D%5E%7B3%7D)
<em>B) Radius</em>
![\text{Volume} = \frac{\text{mass}}{\text{density}} = \frac{5.68\times 10^{26} \text{ kg} }{687 \text{ kg/m}^{3} }= 8.268 \times 10^{23} \text{ m}^{3}](https://tex.z-dn.net/?f=%5Ctext%7BVolume%7D%20%3D%20%5Cfrac%7B%5Ctext%7Bmass%7D%7D%7B%5Ctext%7Bdensity%7D%7D%20%3D%20%5Cfrac%7B5.68%5Ctimes%2010%5E%7B26%7D%20%5Ctext%7B%20kg%7D%20%7D%7B687%20%5Ctext%7B%20kg%2Fm%7D%5E%7B3%7D%20%7D%3D%208.268%20%5Ctimes%2010%5E%7B23%7D%20%5Ctext%7B%20m%7D%5E%7B3%7D)
![V = \frac{ 4}{3 }\pi r^{3}](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B%204%7D%7B3%20%7D%5Cpi%20r%5E%7B3%7D)
![r^{3} = \frac{3V }{4 \pi }\](https://tex.z-dn.net/?f=r%5E%7B3%7D%20%3D%20%5Cfrac%7B3V%20%7D%7B4%20%5Cpi%20%7D%5C)
![r= \sqrt [3]{ \frac{3V }{4 \pi } }](https://tex.z-dn.net/?f=r%3D%20%5Csqrt%20%5B3%5D%7B%20%5Cfrac%7B3V%20%7D%7B4%20%5Cpi%20%7D%20%7D)
![r= \sqrt [3]{ \frac{3\times 8.268 \times 10^{23} \text{ m}^{3}}{4 \pi } }= \sqrt [3]{ 1.974 \times 10^{23} \text{ m}^{3}}= 5.82 \times 10^{7} \text{ m}=\text{58 200 km}](https://tex.z-dn.net/?f=r%3D%20%5Csqrt%20%5B3%5D%7B%20%5Cfrac%7B3%5Ctimes%208.268%20%5Ctimes%2010%5E%7B23%7D%20%5Ctext%7B%20m%7D%5E%7B3%7D%7D%7B4%20%5Cpi%20%7D%20%7D%3D%20%5Csqrt%20%5B3%5D%7B%201.974%20%5Ctimes%2010%5E%7B23%7D%20%5Ctext%7B%20m%7D%5E%7B3%7D%7D%3D%205.82%20%5Ctimes%2010%5E%7B7%7D%20%5Ctext%7B%20m%7D%3D%5Ctext%7B58%20200%20km%7D)
Answer:liquid= _________ than the next ________ is heat
Explanation:
Assume there is 100g of the substance at first
Answer is (3) both mass number and atomic number.
The notation is ₅₅¹³⁷Cs. The Cs represents the chemical symbol of Caesium element. The subscript number at the left hand side of the symbol indicates the atomic number. Hence, atomic number of Cs is 55. The superscript number at the left hand side of the symbol shows the mass number. Hence, the mass number of the Cs is 137.