No two electrons can have the same four electronic quantum numbers
Answer:
C because 77.0 CsF
Explanation:
That is the correct answer because I have that homework and i got it right
Answer:
<h2>Density = 2.9 g/cm³</h2>
Explanation:
The density of a substance is given by
<h3>
</h3>
From the question
The mass of the stone is 211 g
It's volume is 72 cm³
Substitute the values into the above formula and solve for the density
That's
<h3>
</h3>
Density = 2.930
We have the final answer as
<h3>Density = 2.9 g/cm³</h3>
Hope this helps you
Answer:
The substance is most likely NaCl.
Explanation:
Solubility:
As stated in statement the substance is insoluble in CCl₄ (Tetrachloromethane), it shows that the substance is polar in nature. In given options only C₁₀H₈ is soluble in CCl₄ because both are non polar in nature and like dissolves like. Hence, C₁₀H₈ is rejected.
Density:
Now, we are left with three options. NaCl, FeCl₃ and SiO₂. The student found that the density of substance is 2.20 g.mL⁻¹. Which is very close to the density of NaCl (i.e. 2.165 g.mL⁻¹). Therefore, most probably the substance the student is dealing with is Sodium Chloride.
Answer:
No
Explanation:
We first find the solubility of the copper sulphate salt
Number of moles= 4.6 moles
Volume =1.75 L
Molarity= number of moles/ volume = 4.6/1.75= 2.6 molL-1
Hence, only 2.6 moles of Copper II sulphate dissolves in 1.75L of water. Hence 4.6 moles of copper II Sulphate dies not dissolve in 1.75 L of water.