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Gala2k [10]
3 years ago
10

Many atomic dimensions are expressed in angstroms (A). (1A = 1 x 10-8cm). What is the angstrom equal to in terms of the SI units

nanometer (nm) and picometer (pm)? Report your answers in scientific notation.
Chemistry
1 answer:
Nataly [62]3 years ago
7 0

Answer:

1 Å = 1.0 × 10⁻¹ nm

1 Å = 1.0 × 10² pm

Explanation:

Angstrom is the unit of the length which is equal to one ten-billionth of the metre or 10⁻¹⁰ m. It is represented by the symbol is Å .

Angstrom is not part of SI system of the units, but it is considered as a part of metric system.  

Angstrom is used often in natural sciences as well as technology in order to express the sizes of atoms / molecules, and the lengths of the chemical bonds, etc.

1 Å = 10⁻¹⁰ m

1 nm = 10⁻⁹ m

1 pm = 10⁻¹² m

So,  

1 Å = 1.0 × 10⁻¹ nm

1 Å = 1.0 × 10² pm

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How many O atoms are in 4C₆H₁₂O₆
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<h3>Further explanation</h3>

Given

C₆H₁₂O₆ compound

Required

Number of atoms

Solution

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The empirical formula is the smallest comparison of the atoms

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6 0
3 years ago
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shusha [124]

Answer: The enthalpy of combustion, per mole, of butane is -2657.4 kJ

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The expression for enthalpy change is,

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Putting the values we get :

\Delta H=[8\times H_f_{CO_2}+10\times H_f_{H_2O}]-[2\times H_f_{C_4H_{10}+13\times H_f_{O_2}}]

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\Delta H=-5314.8kJ

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Thus enthalpy of combustion per mole of butane is -2657.4 kJ

3 0
3 years ago
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