Answer:
<h2>- It could be stretched into a thin wire.</h2>
Explanation:
As per the question, the most rational claim that the student can make about the aluminum metal is that 'it could be stretched into a thin wire' without breaking which shows its ductility. It is one of the most significant characteristics of a metal. Metals can conduct electricity in any state and not only when melted. Thus, option A is wrong. Options C and D are incorrect as metals neither have the same shape always nor do they break on hitting with a hammer. Therefore, <u>option E</u> is the correct answer.
The model of the atom has dramatically changed over many many years.We learned atoms make up different substances and are the smallest particles of matter, which have subatomic particles that are very small portions of matter. At first scientist only thought there were electrons which are negatively charged.
Answer:
Initially
of nitrogen dioxide were in the container .
Explanation:
Volume of the container at low pressure and at room temperature =![V_1=3.4 L](https://tex.z-dn.net/?f=V_1%3D3.4%20L)
Number of moles in the container = ![n_1](https://tex.z-dn.net/?f=n_1)
After more addition of nitrogen gas at the same pressure and temperature.
Volume of the container after addition = ![V_2=5.11 L](https://tex.z-dn.net/?f=V_2%3D5.11%20L)
Number of moles in the container after addition=![n_2=2.28\times 10^{-2} mol](https://tex.z-dn.net/?f=n_2%3D2.28%5Ctimes%2010%5E%7B-2%7D%20mol)
Applying Avogadro's law:
(at constant pressure and temperature)
![\frac{V_1}{n_1}=\frac{V_2}{n_2}](https://tex.z-dn.net/?f=%5Cfrac%7BV_1%7D%7Bn_1%7D%3D%5Cfrac%7BV_2%7D%7Bn_2%7D)
![n_1=\frac{V_1\times n_2}{V_2}=\frac{3.4 L\times 2.28\times 10^{-2} mol}{5.11 L}](https://tex.z-dn.net/?f=n_1%3D%5Cfrac%7BV_1%5Ctimes%20n_2%7D%7BV_2%7D%3D%5Cfrac%7B3.4%20L%5Ctimes%202.28%5Ctimes%2010%5E%7B-2%7D%20mol%7D%7B5.11%20L%7D)
![n_1=1.51\times 10^{-2} mol](https://tex.z-dn.net/?f=n_1%3D1.51%5Ctimes%2010%5E%7B-2%7D%20mol)
Initially
of nitrogen dioxide were in the container .
Crystallization metamorphism sedimentation and erosion