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Arisa [49]
3 years ago
15

How does atomic radius (size or atom diameter) affect bond distance (distance between atoms)?

Chemistry
2 answers:
inysia [295]3 years ago
8 0
The bond distance is proportional to the atomic radius
yKpoI14uk [10]3 years ago
4 0
When two atoms of the same element are covalently bonded, the radius of each atom will be half the distance between the two nuclei because they equally attract the electrons. The reason for this trend is that the bigger the radii, the further the distance between the two nuclei. Hope this helps:)
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A stock bottle of an acid reads: 56% by mass and 1.25 specific gravity. If the molar mass of the acid is 70g, find the mole per
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Answer:

  • <u>10 mol / dm³</u>

Explanation:

Cubic decimeter is the same unit as liter; so, mole per cubic decimeter is mole per liter, and that is the unit of concentration of molarity. Thus, what is asked is the molarity of the solution. This is how you find it.

1. <u>Take a basis</u>: 1 dm³ = 1 liter = 1,000 ml

2. <u>Calculate the mass of 1 lite</u>r (1,000 ml) of solution:

  • density = mass / volume ⇒ mass = density × volume

Here, the density is given through the specific gravity

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Take density of water as 1.00 g/ml.

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  • mass solution = 1.25 g/ml × 1,000 ml = 1,250 g

3. <u>Calculate the mass of solute</u> (pure acid)

  • % m/m = (mass of solute / mass of solution) × 100

  • 56 = mass of solute / 1,250 g × 100

  • mass of solute = 56 × 1,250g / 100 = 700 g

4. <u>Calculate the number of moles of solute</u>:

  • moles = mass in grams / molar mass = 700 g / 70 g/mol = 10 mol

5. <u>Calculate molarity (mol / dm³)</u>

  • M = number of moles of solute / liter of solution = 10 mol / 1 liter = 10 mol/liter.
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Answer:

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