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Oksanka [162]
3 years ago
8

As part of a chemical compound, which element consists of atoms that most strongly attract electrons of other atoms?

Chemistry
1 answer:
Aleksandr [31]3 years ago
3 0

Answer:

urmom

Explanation:

urmom ............

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The men's world record for swimming 1500 m in a long course pool is 14 min 34.56 s. At this rate how many seconds would it take
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Distance = 1500m, time = 14min 34.56s = 14*60 + 34.56 = 874.56s

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A penny weighs 250 centigrams. How may grams is this ?
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Which has the highest boiling point .33 m NH3 or .10 m Na2SO4​
Aleksandr-060686 [28]

Answer:

0.33 mol/kg NH₃

Explanation:

Data:

     b(NH₃) = 0.33 mol/kg

b(Na₂SO₄) = 0.10 mol/ kg

Calculations:

The formula for the boiling point elevation ΔTb is

\Delta T_{b} = iK_{b}b

i is the van’t Hoff factor — the number of moles of particles you get from a solute.

(a) For NH₃,

The ammonia is a weak electrolyte, so it exists almost entirely as molecules in solution.  

1 mol NH₃ ⟶  1 mol particles

i ≈ 1, and ib = 1 × 0.33 = 0.33 mol particles per kilogram of water

(b) For Na₂SO₄,

Na₂SO₄(aq) ⟶ 2Na⁺(aq) + 2SO₄²⁻(aq)

1 mol Na₂SO₄ ⟶ 3 mol particles

i = 1 and ib = 3 × 0.10 = 0.30 mol particles per kilogram of water

The NH₃ has more moles of particles, so it has the higher boiling point.

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