Step 1 : Write balanced chemical equation.
CaF₂ can be converted to F₂ in 2 steps. The reactions are mentioned below.
I] 
II] 
The final balanced equation for this reaction can be written as
Step 2: Find moles of CaF₂ Using balanced equation
We have 1.12 mol F₂
The mole ratio of CaF₂ and F₂ is 1:1
Step 3 : Calculate molar mass of CaF2.
Molar mass of CaF₂ can be calculated by adding atomic masses of Ca and F
Molar mass of CaF₂ = Ca + 2 (F)
Molar mass of CaF₂ = 40.08 + 18.998 = 78.08 g
Step 4 : Find grams of CaF₂
Grams of CaF₂ = 
Grams of CaF₂ = 87.45 g
87.45 grams of CaF2 would be needed to produce 1.12 moles of F2.
Answer:
ΔH = - 44.0kJ
Explanation:
H2O(l)→H2O(g), ΔH =44.0kJ
In the reaction above, liquid water changes to gaseous water. This occurs through a process known as boiling. This process requires heat, hence the ΔH is positive.
If he reaction is reversed, we have;
H2O(g)→H2O(l)
In this reaction, gaseous water changes to liquid water. This process is known as condensation. The water vapor loses heat in this reaction. Hence ΔH would be negative but still have the same value.
double replacesment and 1,14,12,6
The molar solubility of AgCl:
The molar solubility of AgCl in a 0.050 M NaCl solution is 8 x 
M 
What is solubility?
The solubility is the quantity of reagent required to saturate the solution or bring about the dissociation reaction's equilibrium.
Reaction:
The dissociation reaction of AgCl in water is:
⇄ 
Each mole of AgCl that dissolves in this reaction yields 1 mole of both and 
. The concentration of either the Ag or Cl ions would then be equal to the solubility.
Solubility= [] = []
Calculation:
in 0.050 M NaCl, the [] = 1 x 
ksp = [] x []
1.6 x 
= [
] x ( 5 x )
[] = 5 x 
x 1.6 x
[] = 5 x 1.6 x 
[] = 8 x M
Learn more about molar solubility here,
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I’m pretty sure it’s nitrogen and oxygen but i’m not positive
