Answer:
What is the formula for elevation in boiling point?
Explanation:
The elevation in boiling point (ΔTb) is proportional to the concentration of the solute in the solution. It can be calculated via the following equation. Where, i is the Van't Hoff factor.
...
Boiling Point Elevation Formula.
Solvent Kb value (in oC.kg.mol-1)
Chloroform 3.63
Benzene 2.53
Balanced equation:
Pb(SO₄)₂ + 2 Zn → 2 ZnSO₄ + Pb
From the equation we found that 2 moles of Zn form 2 moles of ZnSO₄
so 0.582 mole of Zn will produce 0.582 ZnSO₄
Molar mass of ZnSO₄ = 161.47 g/mole
Mass of ZnSO₄ formed = 161.47 x 0.582 = 94.0 grams
Answer:
the answer to your question is B
The two resonating structures of Carbon Monoxide are shown below.
The movement of electrons are shown by arrow.
Structure A: In structure a A the formal charges of Carbon and Oxygen are zero. As
Formal Charge is calculated as,
= # of valence electron - electrons in lone pairs + 1/2 bonding electrons electrons
For C: = 4 - 2 + 4/2
= 4- 4
=
0For O: = 6 - 4 + 4/2
= 6- 6
=
0Structure B:
Formal Charge on C: = 4 - 2 + 6/2
= 4- 5
=
-1Formal Charge on O: = 6 - 2 + 6/2
= 6 - 5
=
+1
<span>The answer is (1) chemically combined in a fixed proportion. Elements in a compound are bound by a chemical bond. So, oxygen and hydrogen are bound chemically. Further, their proportion never changes, it is always 1 oxygen atom and 2 hydrogen atoms in water. Thus, elements in a compound are chemically combined in a fixed proportion.Hope this helps. Let me know if you need additional help!</span>