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Ganezh [65]
3 years ago
15

What is the Sr2+ and F- formula

Chemistry
1 answer:
Nataliya [291]3 years ago
8 0

Answer:

SrF₂

Explanation:

The combining species are strontium and fluorine atoms.

 They form an ionic bond because strontium is a metal and it will lose two electrons. Two atoms of fluorine will take up each of the two electrons.

The electrostatic attraction between the two charged particles forms the bond;

                  Elements:

                        Sr                 F

Valency             2                 1

Exchange of

power                 1                 2

The compound is SrF₂

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3 years ago
when 0.863 mol acetone is dissolved in 500 g benzene, the freezing point of benzene drops 8.84°C. what is the molal freezing poi
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Answer:

  • <u>Kf = 5.12 °C/m</u>

Explanation:

<u>1) Data:</u>

a) Solute: acetone

b) Solvent: benzene

c) n (solute) = 0.863 mol

d) mass of solvent = 500 g = 0.500 Kg

e) ΔTf = 8.84 °C

f) Kf = ?

<u>2) Formulae:</u>

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<u>3) Solution:</u>

a) m = 0.863 mol / 0.500 kg = 1.726 m

b) Kf = ΔTf / m = 8.84°C / 1.726 m  = 5.12 °C/m ← answer

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3 years ago
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