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Lerok [7]
3 years ago
8

Which explanation best compares the movement of particles in the three states of matter?

Chemistry
1 answer:
ohaa [14]3 years ago
3 0

Answer:solid: still boi liquid: bouncy boi has: crazy boi

Explanation:

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How do you make a 3M solution of KBr? How many moles of KBr are 1 liter of a 0.3M solution?
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8 0
3 years ago
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How many grams of CaF2 would be needed to produce 1.12 moles of F2?
zlopas [31]

Step 1 : Write balanced chemical equation.

CaF₂ can be converted to F₂ in 2 steps. The reactions are mentioned below.

I] CaF_{2} + H_{2} SO_{4} -------> 2HF + CaSO_{4}

II] 2HF -------> H_{2} + F_{2}

The final balanced equation for this reaction can be written as

CaF_{2} + H_{2} SO_{4} --------->  CaSO_{4} + H_{2} + F_{2}

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

1.12mol F_{2} *  \frac{1molCaF_{2}}{1molF_{2}}    = 1.12molCaF_{2}

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 = 1.12molCaF_{2} *\frac{78.08gCaF_{2}}{1mol CaF_{2}}

Grams of CaF₂ = 87.45 g

87.45 grams of CaF2 would be needed to produce 1.12 moles of F2.

4 0
3 years ago
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