Answer:
2
Explanation:
The compounds XCl₂ and X₃N₂ shows that the valency of X is 2. If they are ionic compounds then X is a metal. The metals having valency=2 mostly reside in group-2.
Answer:
SI unit of force
Explanation:
Newton(N) is the Standard International unit used to measure force. This was named after Sir Isaac Newton.
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Answer:
12.15, 2.23
Explanation:
Using the dilution formula
C₁V₁ = C₂ V₂
where C₁ = 1.46 M
V₁ = 1.48 ml = 0.00148 L
C₂ = unknown
V₂ = 150 ml + 1.48ml = 151.48 ml = 0.15148L
1.46 M × 0.00148 L = C₂×0.15148L
C₂ = 0.0143 M
pOH = - log ( OH⁻) = - log ( 0.0143) = 1.85
pH + pOH = 14
pH = 14 - 1.85 = 12.15
b) using the same formula
C₁V₁ = C₂ V₂
C₁ = 0.99 M
V₁ = 1.49 ml = 0.00149 L
C₂ = unknown
V₂ = 250 ml + 1.49 ml = 251.49 ml = 0.25149 L
0.99 M × 0.00149 L = C₂ × 0.25149 L
C₂ = 0.00587
pH = - log ( H⁺) = - ( -2.23) = 2.23
Answer:
pH = 11.3
Explanation:
From the question given above, the following data were obtained:
Concentration of hydronium ion [H₃O⁺] = 4.950×10¯¹² M
pH =.?
The pH of a solution is defined by the following equation:
pH = –Log [H₃O⁺]
Thus, with the above formula, we can obtain the pH of the solution as follow:
Concentration of hydronium ion [H₃O⁺] = 4.950×10¯¹² M
pH =.?
pH = –Log [H₃O⁺]
pH = –Log 4.950×10¯¹²
pH = 11.3
3-octanone - is a ketone
1-bromopropane - is a halogen derivative
methylpentanoate - is an ester
propylbutylether - is an ether
Explanation:
You may find in the attached picture the structures of organic compounds with the functional group colored in blue.
Learn more about:
structure of organic compounds
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