Answer:
The answer <em>should</em> be 2. as a dying star explodes
Explanation:
I do not have this class, but I am knowledgeable when it comes to stars. A dying star undergoing an event known as a Supernova compresses the core of the star much further than normal, causing rapid fusion to occur. This is extremely prominent in very large stars, which form extremely heavy elements such as Gold and Uranium.
For more information, please see the following link(s): https://astronomy.com/magazine/ask-astro/2020/12/ask-astro-how-do-stars-make-elements-heavier-than-iron
Answer: A) Nonmetal carbon shares valence electrons with each nonmetal chlorine forming four covalent bonds.
Explanation: Covalent bond is formed by sharing of electrons between atoms.
Ionic bond is formed by transfer of electrons between atoms.
Carbon with atomic no 6 and has configuration of 
. Carbon has 4 valence electrons. It can only share electrons as it is difficult to gain or lose 4 electrons to complete it's octet.
Chlorine with atomic no 17 has configuration of 
. It has 7 valence electrons and need one electron to complete its octet.
Thus carbon will share 4 electrons, one each with four chlorine atoms to form carbon tetra chloride.
Answer:
Dipole moment of HNO3 is 2.17 ± 0.02 D
Answer:
Option A. 0.378M
Explanation:
Data obtained from the question include:
Molarity of acid (Ma) =..?
Volume of acid (Va) = 37.0 mL
Volume of base (Vb) = 56.0 mL
Molarity of base (Mb) = 0.250 M
Next, we shall write the balanced equation for the reaction. This is given below:
HCl + NaOH —> NaCl + H2O
From the balanced equation above,
The mole ratio of the acid (nA) = 1
The mole ratio of the base (nB) = 1
Finally, we can determine the molarity of the acid as shown below :
MaVa/MbVb = nA/nB
Ma x 37 / 0.25 x 56 = 1
Cross multiply
Ma x 37 = 0.25 x 56
Divide both side by 37
Ma = 0.25 x 56 /37
Ma = 0.378M
Therefore, the molarity of the acid, HCl is 0.378M
